Semiconductor Components Industries, LLC, 2005
January, 2005 - Rev. 14.5
1
Publication Order Number:
NCP302/D
NCP302, NCP303
Voltage Detector Series
with Programmable Delay
The NCP302 and NCP303 series are second generation ultra-low
current voltage detectors that contain a programmable time delay
generator. These devices are specifically designed for use as reset
controllers in portable microprocessor based systems where extended
battery life is paramount.
Each series features a highly accurate undervoltage detector with
hysteresis and an externally programmable time delay generator. This
combination of features prevents erratic system reset operation.
The NCP302 series consists of complementary output devices that
are available with either an active high or active low reset. The
NCP303 series has an open drain N-Channel output with an active low
reset output.
Features
Quiescent Current of 0.5
mA Typical
High Accuracy Undervoltage Threshold of 2.0%
Externally Programmable Time Delay Generator
Wide Operating Voltage Range of 0.8 V to 10 V
Complementary or Open Drain Output
Active Low or Active High Reset
Pb-Free Packages are Available
Typical Applications
Microprocessor Reset Controller
Low Battery Detection
Power Fail Indicator
Battery Backup Detection
Figure 1. Representative Block Diagrams
This device contains 28 active transistors.
NCP303LSNxxT1
Open Drain Output Configuration
NCP302xSNxxT1
Complementary Output Configuration
V
ref
2
Input
1
Reset
Output
3
GND 5
C
D
R
D
V
ref
2
Input
3
GND 5
C
D
R
D
1
Reset Output
*
Inverter for active low devices.
*
Buffer for active high devices.
*
See detailed ordering and shipping information in the ordering
information section on page 22 of this data sheet.
ORDERING INFORMATION
THIN SOT23-5/TSOP-5/SC59-5
CASE 483
1
5
PIN CONNECTIONS AND
MARKING DIAGRAM
1
3
N.C.
Reset
Output
2
Input
Ground
4
C
D
5
xxxYW
(Top View)
xxx =Specific Device Code
Y
= Year
W
= Work Week
http://onsemi.com
NCP302, NCP303
http://onsemi.com
2
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Power Supply Voltage (Pin 2)
V
in
12
V
Delay Capacitor Pin Voltage (Pin 5)
V
CD
-0.3 to V
in
+ 0.3
V
Output Voltage (Pin 1)
Complementary, NCP302
N-Channel Open Drain, NCP303
V
OUT
-0.3 to V
in
+ 0.3
-0.3 to 12
V
Output Current (Pin 1) (Note 2)
I
OUT
70
mA
Thermal Resistance Junction-to-Air
R
q
JA
250
C/W
Maximum Junction Temperature
T
J
+125
C
Operating Ambient Temperature Range
T
A
-40 to +85
C
Storage Temperature Range
T
stg
-55 to +150
C
Moisture Sensitivity Level (T
A
= 235
C)
MSL
1
Latchup Performance
Positive
Negative
I
LATCHUP
200
200
mA
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL-STD-883, Method 3015.
Machine Model Method 200 V.
2. The maximum package power dissipation limit must not be exceeded.
P
D
+
T
J(max)
*
T
A
R
q
JA
NCP302, NCP303
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(For all values T
A
= 25
C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
NCP302/3 - 0.9
Detector Threshold (Pin 2, V
in
Decreasing)
V
DET-
0.882
0.900
0.918
V
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
V
HYS
0.027
0.045
0.063
V
Supply Current (Pin 2)
(V
in
= 0.8 V)
(V
in
= 2.9 V)
I
in
-
-
0.20
0.45
0.6
1.2
m
A
Maximum Operating Voltage (Pin 2)
V
in(max)
-
-
10
V
Minimum Operating Voltage (Pin 2)
(T
A
= -40
C to 85
C)
V
in(min)
-
-
0.55
0.65
0.70
0.80
V
Reset Output Current (Pin 1, Active Low `L' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 0.85V)
0.01
0.05
0.05
0.50
-
-
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
1.0
6.0
-
Reset Output Current (Pin 1, Active High `H' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 1.5 V)
1.05
2.5
-
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 0.8 V)
0.011
0.014
0.04
0.08
-
-
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 0.99 V)
V
TCD
0.50
0.67
0.84
V
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 0.85 V, V
CD
= 0.5V)
I
CD
2.0
10
120
300
-
-
m
A
Delay Pullup Resistance (Pin 5)
R
D
0.5
1.0
2.0
M
W
NCP302/3 - 1.8
Detector Threshold (Pin 2, V
in
Decreasing)
V
DET-
1.764
1.80
1.836
V
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
V
HYS
0.054
0.090
0.126
V
Supply Current (Pin 2)
(V
in
= 1.7 V)
(V
in
= 3.8 V)
I
in
-
-
0.23
0.48
0.7
1.3
m
A
Maximum Operating Voltage (Pin 2)
V
in(max)
-
-
10
V
Minimum Operating Voltage (Pin 2)
(T
A
= -40
C to 85
C)
V
in(min)
-
-
0.55
0.65
0.70
0.80
V
Reset Output Current (Pin 1, Active Low `L' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
0.01
1.0
0.05
2.0
-
-
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
1.0
6.0
-
Reset Output Current (Pin 1, Active High `H' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
6.3
11
-
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
0.011
0.525
0.04
0.6
-
-
NCP302, NCP303
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(continued) (For all values T
A
= 25
C, unless otherwise noted.)
Characteristic
Unit
Max
Typ
Min
Symbol
NCP302/3 - 1.8
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 1.98 V)
V
TCD
0.99
1.34
1.68
V
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
I
CD
2.0
200
120
1600
-
-
m
A
Delay Pullup Resistance (Pin 5)
R
D
0.5
1.0
2.0
M
W
NCP302/3 - 2.0
Detector Threshold (Pin 2, V
in
Decreasing)
V
DET-
1.960
2.00
2.040
V
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
V
HYS
0.06
0.10
0.14
V
Supply Current (Pin 2)
(V
in
= 1.9 V)
(V
in
= 4.0 V)
I
in
-
-
0.23
0.48
0.8
1.3
m
A
Maximum Operating Voltage (Pin 2)
V
in(max)
-
-
10
V
Minimum Operating Voltage (Pin 2)
(T
A
= -40
C to 85
C)
V
in(min)
-
-
0.55
0.65
0.70
0.80
V
Reset Output Current (Pin 1, Active Low `L' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
0.01
1.0
0.05
2.0
-
-
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
1.0
6.0
-
Reset Output Current (Pin 1, Active High `H' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
6.3
11
-
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
0.011
0.525
0.04
0.6
-
-
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 2.2 V)
V
TCD
1.10
1.49
1.87
V
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
I
CD
2.0
200
120
1600
-
-
m
A
Delay Pullup Resistance (Pin 5)
R
D
0.5
1.0
2.0
M
W
NCP302/3- 2.7
Detector Threshold (Pin 2, V
in
Decreasing)
V
DET-
2.646
2.700
2.754
V
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
V
HYS
0.081
0.135
0.189
V
Supply Current (Pin 2)
(V
in
= 2.6 V)
(V
in
= 4.7 V)
I
in
-
-
0.26
0.46
0.8
1.3
m
A
Maximum Operating Voltage (Pin 2)
V
in(max)
-
-
10
V
Minimum Operating Voltage (Pin 2)
(T
A
= -40
C to 85
C)
V
in(min)
-
-
0.55
0.65
0.70
0.80
V
Reset Output Current (Pin 1, Active Low `L' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
0.01
1.0
0.05
2.0
-
-
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
1.0
6.0
-
NCP302, NCP303
http://onsemi.com
5
ELECTRICAL CHARACTERISTICS
(continued) (For all values T
A
= 25
C, unless otherwise noted.)
Characteristic
Unit
Max
Typ
Min
Symbol
NCP302/3- 2.7
Reset Output Current (Pin 1, Active High `H' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
6.3
11
-
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
0.011
0.525
0.04
0.6
-
-
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 2.97 V)
V
TCD
1.49
2.01
2.53
V
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
I
CD
2.0
200
120
1600
-
-
m
A
Delay Pullup Resistance (Pin 5)
R
D
0.5
1.0
2.0
M
W
NCP302/3 - 3.0
Detector Threshold (Pin 2, V
in
Decreasing)
V
DET-
2.94
3.00
3.06
V
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
V
HYS
0.09
0.15
0.21
V
Supply Current (Pin 2)
(V
in
= 2.87 V)
(V
in
= 5.0 V)
I
in
-
-
0.27
0.47
0.9
1.3
m
A
Maximum Operating Voltage (Pin 2)
V
in(max)
-
-
10
V
Minimum Operating Voltage (Pin 2)
(T
A
= -40
C to 85
C)
V
in(min)
-
-
0.55
0.65
0.70
0.80
V
Reset Output Current (Pin 1, Active Low `L' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
0.01
1.0
0.05
2.0
-
-
Pch Source Current, NCP302
(V
OUT
= 2.4V, V
in
= 4.5V)
1.0
6.0
-
Reset Output Current (Pin 1, Active High `H' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
6.3
11
-
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
0.011
0.525
0.04
0.6
-
-
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 3.3 V)
V
TCD
1.65
2.23
2.81
V
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
I
CD
2.0
200
120
1600
-
-
m
A
Delay Pullup Resistance (Pin 5)
R
D
0.5
1.0
2.0
M
W
NCP302/3 - 4.5
Detector Threshold (Pin 2, V
in
Decreasing)
V
DET-
4.410
4.500
4.590
V
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
V
HYS
0.135
0.225
0.315
V
Supply Current (Pin 2)
(V
in
= 4.34 V)
(V
in
= 6.5 V)
I
in
-
-
0.33
0.52
1.0
1.4
m
A
Maximum Operating Voltage (Pin 2)
V
in(max)
-
-
10
V
Minimum Operating Voltage (Pin 2)
(T
A
= -40
C to 85
C)
V
in(min)
-
-
0.55
0.65
0.70
0.80
V
NCP302, NCP303
http://onsemi.com
6
ELECTRICAL CHARACTERISTICS
(continued) (For all values T
A
= 25
C, unless otherwise noted.)
Characteristic
Unit
Max
Typ
Min
Symbol
NCP302/3 - 4.5
Reset Output Current (Pin 1, Active Low `L' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
0.01
1.0
0.05
2.0
-
-
Pch Source Current, NCP302
(V
OUT
= 5.9V, V
in
= 8.0V)
1.5
10.5
-
Reset Output Current (Pin 1, Active High `H' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
6.3
11
-
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
0.011
0.525
0.04
0.6
-
-
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 4.95 V)
V
TCD
2.25
3.04
3.83
V
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
I
CD
2.0
200
120
1600
-
-
m
A
Delay Pullup Resistance (Pin 5)
R
D
0.5
1.0
2.0
M
W
NCP302/3 - 4.7
Detector Threshold (Pin 2, V
in
Decreasing)
V
DET-
4.606
4.70
4.794
V
Detector Threshold Hysteresis (Pin 2, V
in
Increasing)
V
HYS
0.141
0.235
0.329
V
Supply Current (Pin 2)
(V
in
= 4.54 V)
(V
in
= 6.7 V)
I
in
-
-
0.34
0.53
1.0
1.4
m
A
Maximum Operating Voltage (Pin 2)
V
in(max)
-
-
10
V
Minimum Operating Voltage (Pin 2)
(T
A
= -40
C to 85
C)
V
in(min)
-
-
0.55
0.65
0.70
0.80
V
Reset Output Current (Pin 1, Active Low `L' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.05V, V
in
= 0.70V)
(V
OUT
= 0.50V, V
in
= 1.5V)
0.01
1.0
0.05
2.0
-
-
Pch Source Current, NCP302
(V
OUT
= 5.9V, V
in
= 8.0V)
1.5
10.5
-
Reset Output Current (Pin 1, Active High `H' Suffix Devices)
I
OUT
mA
Nch Sink Current, NCP302, NCP303
(V
OUT
= 0.5 V, V
in
= 5.0 V)
6.3
11
-
Pch Source Current, NCP302
(V
OUT
= 0.4 V, V
in
= 0.7 V)
(V
OUT
= GND, V
in
= 1.5 V)
0.011
0.525
0.04
0.6
-
-
C
D
Delay Pin Threshold Voltage (Pin 5)
(V
in
= 5.17 V)
V
TCD
2.59
3.49
4.40
V
Delay Capacitor Pin Sink Current (Pin 5)
(V
in
= 0.7 V, V
CD
= 0.1V)
(V
in
= 1.5 V, V
CD
= 0.5V)
I
CD
2.0
200
120
1600
-
-
m
A
Delay Pullup Resistance (Pin 5)
R
D
0.5
1.0
2.0
M
W
NCP302, NCP303
http://onsemi.com
7
0.7 V
GND
5.0 V
2.5 V
GND
V
DET+
+ 2.0 V
NCP303L
NCP302L
t
D2
Input Voltage,
Pin 2
0.7 V
GND
GND
V
DET+
+ 2.0 V
t
D2
V
DET+
+ 2.0 V
V
DET+
+ 2.0 V
2
Reset Output
Voltage, Pin 1
NCP302 and NCP303 series are measured with a 10 pF capacitive load. NCP303 has an additional 470 k pullup resistor
connected from the reset output to +5.0 V. The reset output voltage waveforms are shown for the active low `L' devices. Output
time delay t
D1
and t
D2
are dependent upon the delay capacitance. Refer to Figures 12, 13, and 14. The upper detector
threshold, V
DET+
is the sum of the lower detector threshold, V
DET-
plus the input hysteresis, V
HYS
.
Figure 2. Measurement Conditions for t
D1
and t
D2
t
D1
t
D1
NCP302, NCP303
http://onsemi.com
8
Table 1. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 - 4.9 V
Detector Threshold
Supply Current
Nch Sink Current
Pch
So rce
NCP302 Series
Detector Threshold
Detector Threshold
Hysteresis
V
in
Low
V
in
High
V
in
Low
V
in
High
Source
Current
V
DET-
(V)
V
HYS
(V)
I
in
(
m
A)
(1)
I
in
(
m
A)
(2)
I
OUT
(mA)
(3)
I
OUT
(mA)
(4)
I
OUT
(mA)
(5)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
Typ
NCP302LSN09T1
0.882
0.9
0.918
0.027
0.045
0.063
0.3
0.5
0.05
0.5
2.0
NCP302LSN10T1
0.980
1.0
1.020
0.030
0.050
0.070
NCP302LSN11T1
1.078
1.1
1.122
0.033
0.055
0.077
1.0
NCP302LSN12T1
1.176
1.2
1.224
0.036
0.060
0.084
NCP302LSN13T1
1.274
1.3
1.326
0.039
0.065
0.091
NCP302LSN14T1
1.372
1.4
1.428
0.042
0.070
0.098
NCP302LSN15T1
1.470
1.5
1.530
0.045
0.075
0.105
NCP302LSN16T1
1.568
1.6
1.632
0.048
0.080
0.112
2.0
NCP302LSN17T1
1.666
1.7
1.734
0.051
0.085
0.119
NCP302LSN18T1
1.764
1.8
1.836
0.054
0.090
0.126
NCP302LSN19T1
1.862
1.9
1.938
0.057
0.095
0.133
NCP302LSN20T1
1.960
2.0
2.040
0.060
0.100
0.140
NCP302LSN21T1
2.058
2.1
2.142
0.063
0.105
0.147
NCP302LSN22T1
2.156
2.2
2.244
0.066
0.110
0.154
NCP302LSN23T1
2.254
2.3
2.346
0.069
0.115
0.161
NCP302LSN24T1
2.352
2.4
2.448
0.072
0.120
0.168
NCP302LSN25T1
2.450
2.5
2.550
0.075
0.125
0.175
NCP302LSN26T1
2.548
2.6
2.652
0.078
0.130
0.182
NCP302LSN27T1
2.646
2.7
2.754
0.081
0.135
0.189
NCP302LSN28T1
2.744
2.8
2.856
0.084
0.140
0.196
NCP302LSN29T1
2.842
2.9
2.958
0.087
0.145
0.203
NCP302LSN30T1
2.940
3.0
3.060
0.090
0.150
0.210
NCP302LSN31T1
3.038
3.1
3.162
0.093
0.155
0.217
NCP302LSN32T1
3.136
3.2
3.264
0.096
0.160
0.224
NCP302LSN33T1
3.234
3.3
3.366
0.099
0.165
0.231
NCP302LSN34T1
3.332
3.4
3.468
0.102
0.170
0.238
NCP302LSN35T1
3.430
3.5
3.570
0.105
0.175
0.245
NCP302LSN36T1
3.528
3.6
3.672
0.108
0.180
0.252
NCP302LSN37T1
3.626
3.7
3.774
0.111
0.185
0.259
NCP302LSN38T1
3.724
3.8
3.876
0.114
0.190
0.266
NCP302LSN39T1
3.822
3.9
3.978
0.117
0.195
0.273
NCP302LSN40T1
3.920
4.0
4.080
0.120
0.200
0.280
0.4
0.6
3.0
NCP302LSN41T1
4.018
4.1
4.182
0.123
0.205
0.287
NCP302LSN42T1
4.116
4.2
4.284
0.126
0.210
0.294
NCP302LSN43T1
4.214
4.3
4.386
0.129
0.215
0.301
NCP302LSN44T1
4.312
4.4
4.488
0.132
0.220
0.308
NCP302LSN45T1
4.410
4.5
4.590
0.135
0.225
0.315
NCP302LSN46T1
4.508
4.6
4.692
0.138
0.230
0.322
NCP302LSN47T1
4.606
4.7
4.794
0.141
0.235
0.329
NCP302LSN48T1
4.704
4.8
4.896
0.144
0.240
0.336
NCP302LSN49T1
4.802
4.9
4.998
0.147
0.245
0.343
3. Condition 1: 0.9 -- 2.9 V, V
in
= V
DET-
- 0.10 V; 3.0 -- 3.9 V, V
in
= V
DET-
- 0.13 V; 4.0 -- 4.9 V, V
in
= V
DET-
- 0.16 V
4. Condition 2: 0.9 -- 4.9 V, V
in
= V
DET-
+ 2.0 V
5. Condition 3: 0.9 -- 4.9 V, V
in
= 0.7 V, V
OUT
= 0.05 V, Active Low `L' Suffix Devices
6. Condition 4: 0.9 -- 1.0 V, V
in
= 0.85 V, V
OUT
= 0.5 V; 1.1 -- 1.5 V, V
in
= 1.0 V, V
OUT
= 0.5 V; 1.6 -- 4.9 V, V
in
= 1.5 V, V
OUT
= 0.5 V,
Condition 4:
Active Low `L' Suffix Devices
7. Condition 5: 0.9 -- 3.9 V, V
in
= 4.5 V, V
OUT
= 2.4 V; 4.0 -- 4.9 V, V
in
= 8.0 V, V
OUT
= 5.9 V, Active Low `L' Suffix Devices
NCP302, NCP303
http://onsemi.com
9
Table 2. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 - 4.9 V
Detector Threshold
Supply Current
Nch
Sink
Pch Source Current
NCP302 Series
Detector Threshold
Detector Threshold
Hysteresis
V
in
Low
V
in
High
Sink
Current
V
in
Low
V
in
High
V
DET-
(V)
V
HYS
(V)
I
in
(
m
A)
(1)
I
in
(
m
A)
(2)
I
OUT
(mA)
(3)
I
OUT
(mA)
(4)
I
OUT
(mA)
(5)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
Typ
NCP302HSN09T1
0.882
0.9
0.918
0.027
0.045
0.063
0.3
0.5
2.5
0.04
0.08
NCP302HSN10T1
0.980
1.0
1.020
0.030
0.050
0.070
NCP302HSN11T1
1.078
1.1
1.122
0.033
0.055
0.077
0.18
NCP302HSN12T1
1.176
1.2
1.224
0.036
0.060
0.084
NCP302HSN13T1
1.274
1.3
1.326
0.039
0.065
0.091
NCP302HSN14T1
1.372
1.4
1.428
0.042
0.070
0.098
NCP302HSN15T1
1.470
1.5
1.530
0.045
0.075
0.105
11
NCP302HSN16T1
1.568
1.6
1.632
0.048
0.080
0.112
0.6
NCP302HSN17T1
1.666
1.7
1.734
0.051
0.085
0.119
NCP302HSN18T1
1.764
1.8
1.836
0.054
0.090
0.126
NCP302HSN19T1
1.862
1.9
1.938
0.057
0.095
0.133
NCP302HSN20T1
1.960
2.0
2.040
0.060
0.100
0.140
NCP302HSN21T1
2.058
2.1
2.142
0.063
0.105
0.147
NCP302HSN22T1
2.156
2.2
2.244
0.066
0.110
0.154
NCP302HSN23T1
2.254
2.3
2.346
0.069
0.115
0.161
NCP302HSN24T1
2.352
2.4
2.448
0.072
0.120
0.168
NCP302HSN25T1
2.450
2.5
2.550
0.075
0.125
0.175
NCP302HSN26T1
2.548
2.6
2.652
0.078
0.130
0.182
NCP302HSN27T1
2.646
2.7
2.754
0.081
0.135
0.189
NCP302HSN28T1
2.744
2.8
2.856
0.084
0.140
0.196
NCP302HSN29T1
2.842
2.9
2.958
0.087
0.145
0.203
NCP302HSN30T1
2.940
3.0
3.060
0.090
0.150
0.210
NCP302HSN31T1
3.038
3.1
3.162
0.093
0.155
0.217
NCP302HSN32T1
3.136
3.2
3.264
0.096
0.160
0.224
NCP302HSN33T1
3.234
3.3
3.366
0.099
0.165
0.231
NCP302HSN34T1
3.332
3.4
3.468
0.102
0.170
0.238
NCP302HSN35T1
3.430
3.5
3.570
0.105
0.175
0.245
NCP302HSN36T1
3.528
3.6
3.672
0.108
0.180
0.252
NCP302HSN37T1
3.626
3.7
3.774
0.111
0.185
0.259
NCP302HSN38T1
3.724
3.8
3.876
0.114
0.190
0.266
NCP302HSN39T1
3.822
3.9
3.978
0.117
0.195
0.273
NCP302HSN40T1
3.920
4.0
4.080
0.120
0.200
0.280
0.4
0.6
NCP302HSN41T1
4.018
4.1
4.182
0.123
0.205
0.287
NCP302HSN42T1
4.116
4.2
4.284
0.126
0.210
0.294
NCP302HSN43T1
4.214
4.3
4.386
0.129
0.215
0.301
NCP302HSN44T1
4.312
4.4
4.488
0.132
0.220
0.308
NCP302HSN45T1
4.410
4.5
4.590
0.135
0.225
0.315
NCP302HSN46T1
4.508
4.6
4.692
0.138
0.230
0.322
NCP302HSN47T1
4.606
4.7
4.794
0.141
0.235
0.329
NCP302HSN48T1
4.704
4.8
4.896
0.144
0.240
0.336
NCP302HSN49T1
4.802
4.9
4.998
0.147
0.245
0.343
8. Condition 1: 0.9 -- 2.9 V, V
in
= V
DET-
- 0.10 V; 3.0 -- 3.9 V, V
in
= V
DET-
- 0.13 V; 4.0 -- 4.9 V, V
in
= V
DET-
- 0.16 V
9. Condition 2: 0.9 -- 4.9 V, V
in
= V
DET-
+ 2.0 V
10. Condition 3: 0.9 -- 1.4 V, V
in
= 1.5 V, V
OUT
= 0.5 V; 1.5 -- 4.9 V, V
in
= 5.0 V, V
OUT
= 0.5 V, Active High `H' Suffix Devices
11. Condition 4: 0.9 -- 4.9 V, V
in
= 0.7 V, V
OUT
= 0.4 V, Active High `H' Suffix Devices
12. Condition 5: 0.9 -- 1.0 V, V
in
= 0.8 V, V
OUT
= GND; 1.1 -- 1.5 V, V
in
= 1.0 V, V
OUT
= GND; 1.6 -- 4.9 V, V
in
= 1.5 V, V
OUT
= GND,
Active High `H' Suffix Devices
NCP302, NCP303
http://onsemi.com
10
Table 3. ELECTRICAL CHARACTERISTIC TABLE FOR 0.9 - 4.9 V
Detector Threshold
Supply Current
Nch Sink Current
NCP303 Series
Detector Threshold
Detector Threshold
Hysteresis
V
in
Low
V
in
High
V
in
Low
V
in
High
V
DET-
(V)
V
HYS
(V)
I
in
(
m
A)
(1)
I
in
(
m
A)
(2)
I
OUT
(mA)
(3)
I
OUT
(mA)
(4)
Part Number
Min
Typ
Max
Min
Typ
Max
Typ
Typ
Typ
Typ
NCP303LSN09T1
0.882
0.9
0.918
0.027
0.045
0.063
0.3
0.5
0.05
0.5
NCP303LSN10T1
0.980
1.0
1.020
0.030
0.050
0.070
NCP303LSN11T1
1.078
1.1
1.122
0.033
0.055
0.077
1.0
NCP303LSN12T1
1.176
1.2
1.224
0.036
0.060
0.084
NCP303LSN13T1
1.274
1.3
1.326
0.039
0.065
0.091
NCP303LSN14T1
1.372
1.4
1.428
0.042
0.070
0.098
NCP303LSN15T1
1.470
1.5
1.530
0.045
0.075
0.105
NCP303LSN16T1
1.568
1.6
1.632
0.048
0.080
0.112
2.0
NCP303LSN17T1
1.666
1.7
1.734
0.051
0.085
0.119
NCP303LSN18T1
1.764
1.8
1.836
0.054
0.090
0.126
NCP303LSN19T1
1.862
1.9
1.938
0.057
0.095
0.133
NCP303LSN20T1
1.960
2.0
2.040
0.060
0.100
0.140
NCP303LSN21T1
2.058
2.1
2.142
0.063
0.105
0.147
NCP303LSN22T1
2.156
2.2
2.244
0.066
0.110
0.154
NCP303LSN23T1
2.254
2.3
2.346
0.069
0.115
0.161
NCP303LSN24T1
2.352
2.4
2.448
0.072
0.120
0.168
NCP303LSN25T1
2.450
2.5
2.550
0.075
0.125
0.175
NCP303LSN26T1
2.548
2.6
2.652
0.078
0.130
0.182
NCP303LSN27T1
2.646
2.7
2.754
0.081
0.135
0.189
NCP303LSN28T1
2.744
2.8
2.856
0.084
0.140
0.196
NCP303LSN29T1
2.842
2.9
2.958
0.087
0.145
0.203
NCP303LSN30T1
2.940
3.0
3.060
0.090
0.150
0.210
NCP303LSN31T1
3.038
3.1
3.162
0.093
0.155
0.217
NCP303LSN32T1
3.136
3.2
3.264
0.096
0.160
0.224
NCP303LSN33T1
3.234
3.3
3.366
0.099
0.165
0.231
NCP303LSN34T1
3.332
3.4
3.468
0.102
0.170
0.238
NCP303LSN35T1
3.430
3.5
3.570
0.105
0.175
0.245
NCP303LSN36T1
3.528
3.6
3.672
0.108
0.180
0.252
NCP303LSN37T1
3.626
3.7
3.774
0.111
0.185
0.259
NCP303LSN38T1
3.724
3.8
3.876
0.114
0.190
0.266
NCP303LSN39T1
3.822
3.9
3.978
0.117
0.195
0.273
NCP303LSN40T1
3.920
4.0
4.080
0.120
0.200
0.280
0.4
0.6
NCP303LSN41T1
4.018
4.1
4.182
0.123
0.205
0.287
NCP303LSN42T1
4.116
4.2
4.284
0.126
0.210
0.294
NCP303LSN43T1
4.214
4.3
4.386
0.129
0.215
0.301
NCP303LSN44T1
4.312
4.4
4.488
0.132
0.220
0.308
NCP303LSN45T1
4.410
4.5
4.590
0.135
0.225
0.315
NCP303LSN46T1
4.508
4.6
4.692
0.138
0.230
0.322
NCP303LSN47T1
4.606
4.7
4.794
0.141
0.235
0.329
NCP303LSN48T1
4.704
4.8
4.896
0.144
0.240
0.336
NCP303LSN49T1
4.802
4.9
4.998
0.147
0.245
0.343
13. Condition 1: 0.9 -- 2.9 V, V
in
= V
DET-
- 0.10 V; 3.0 -- 3.9 V, V
in
= V
DET-
- 0.13 V; 4.0 -- 4.9 V, V
in
= V
DET-
- 0.16 V
14. Condition 2: 0.9 -- 4.9 V, V
in
= V
DET-
+ 2.0 V
15. Condition 3: 0.9 -- 4.9 V, V
in
= 0.7 V, V
OUT
= 0.05 V, Active Low `L' Suffix Devices
16. Condition 4: 0.9 -- 1.0 V, V
in
= 0.85 V, V
OUT
= 0.5 V; 1.1 -- 1.5 V, V
in
= 1.0 V, V
OUT
= 0.5 V; 1.6 -- 4.9 V, V
in
= 1.5 V, V
OUT
= 0.5 V,
Condition 4:
Active Low `L' Suffix Devices
NCP302, NCP303
http://onsemi.com
11
V
DET
, DETECT
OR THRESHOLD VOL
T
AGE (V)
-50
4.9
T
A
, AMBIENT TEMPERATURE (
C)
4.8
4.7
4.6
4.4
-25
0
25
50
75
100
4.5
4.3
3.00
-50
0.98
T
A
, AMBIENT TEMPERATURE (
C)
2.90
0.96
2.80
0.94
2.70
0.92
2.60
0.88
-25
0
25
50
75
100
0.90
0.86
-50
-25
0
25
50
75
100
T
A
, AMBIENT TEMPERATURE (
C)
2.65
2.75
2.85
2.95
V
DET+
-50
0.9
0.8
0.7
0.6
0.4
-25
0
25
50
75
100
0.5
0.3
T
A
, AMBIENT TEMPERATURE (
C)
-50
2.3
2.2
2.1
1.9
-25
0
25
50
75
100
2.0
1.8
T
A
, AMBIENT TEMPERATURE (
C)
-50
3.3
3.2
3.1
3.0
2.8
-25
0
25
50
75
100
2.9
2.7
T
A
, AMBIENT TEMPERATURE (
C)
Figure 3. NCP302/3 Series 0.9 V
Detector Threshold Voltage vs. Temperature
Figure 4. NCP302/3 Series 2.7 V
Detector Threshold Voltage vs. Temperature
Figure 5. NCP302/3 Series 4.5 V
Detector Threshold Voltage vs. Temperature
Figure 6. NCP302/3 Series 0.9 V
C
D
Delay Pin Threshold Voltage vs. Temperature
Figure 7. NCP302/3 Series 2.7 V
C
D
Delay Pin Threshold Voltage vs. Temperature
Figure 8. NCP302/3 Series 4.5 V
C
D
Delay Pin Threshold Voltage vs. Temperature
V
DET
, DETECT
OR THRESHOLD VOL
T
AGE (V)
V
TCD
, C
D
PIN THRESHOLD VOL
T
AGE (V)
V
DET
, DETECT
OR THRESHOLD VOL
T
AGE (V)
V
TCD
, C
D
PIN THRESHOLD VOL
T
AGE (V)
V
TCD
, C
D
PIN THRESHOLD VOL
T
AGE (V)
V
DET+
V
DET-
V
DET-
V
DET+
V
DET-
V
in
= 0.99 V
V
in
= 2.97 V
V
in
= 4.95 V
NCP302, NCP303
http://onsemi.com
12
, t
D2
, OUTPUT
TIME DELA
Y
0
18
14
10
6.0
2.0
0.5
1.0
1.5
2.0
2.5
3.0
4.0
0
8.0
0
V
CD
, DELAY PIN VOLTAGE (V)
6.0
4.0
2.0
0
0.2
0.4
0.6
0.8
1.0
1.0
3.0
5.0
7.0
0
0.5
1.0
1.5
2.0
2.5
V
CD
, DELAY PIN VOLTAGE (V)
3.5
4.0
16
8.0
12
V
CD
, DELAY PIN VOLTAGE (V)
10000
1000
100
10
0.1
1.0
0.0001
0.001
0.01
0.1
1.0
C
D
, DELAY PIN CAPACITANCE (
m
F)
10000
1000
100
10
0.1
1.0
0.0001
0.001
0.01
0.1
1.0
C
D
, DELAY PIN CAPACITANCE (
m
F)
0.0001
0.001
0.01
0.1
1.0
10000
1000
100
10
0.1
1.0
C
D
, DELAY PIN CAPACITANCE (
m
F)
Figure 9. NCP302/3 Series 0.9 V
C
D
Delay Pin Sink Current vs. Voltage
0.6
0.3
0.2
0
0.1
0.4
0.5
Figure 10. NCP302/3 Series 2.7 V
C
D
Delay Pin Sink Current vs. Voltage
Figure 11. NCP302/3 Series 4.5 V
C
D
Delay Pin Sink Current vs. Voltage
Figure 12. NCP302/3 Series 0.9 V
Output Time Delay vs. Capacitance
Figure 13. NCP302/3 Series 2.7 V
Output Time Delay vs. Capacitance
Figure 14. NCP302/3 Series 4.5 V
Output Time Delay vs. Capacitance
T
A
= 25
C
T
A
= 25
C
T
A
= 25
C
T
A
= 25
C
t D1
t
D2
(ms)
t
D1
(
m
s)
T
A
= 25
C
t
D2
(ms)
t
D1
(
m
s)
, t
D2
, OUTPUT
TIME DELA
Y
t D1
, t
D2
, OUTPUT
TIME DELA
Y
t D1
T
A
= 25
C
t
D2
(ms)
t
D1
(
m
s)
I
CD
, C
D
DELA
Y PIN SINK CURRENT (mA)
V
in
= 0.85 V
V
in
= 0.7 V
V
in
= 2.5 V
V
in
= 2.0 V
V
in
= 1.5 V
I
CD
, C
D
DELA
Y PIN SINK CURRENT (mA)
V
in
= 4.0 V
V
in
= 3.5 V
V
in
= 3.0 V
V
in
= 2.5 V
I
CD
, C
D
DELA
Y PIN SINK CURRENT (mA)
NCP302, NCP303
http://onsemi.com
13
I
OUT
, OUTPUT SINK CURRENT (mA)
V
in
, INPUT VOLTAGE (V)
0
0.2
0.4
0.6
0.8
1.0
0.8
0.6
0.4
0.2
0
1.0
0
1.0
1.5
2.0
2.5
3.0
2.0
1.5
1.0
0.5
0
3.0
V
in
, INPUT VOLTAGE (V)
0.5
2.5
0
1.0
2.0
3.0
4.0
5.0
4.0
3.0
2.0
1.0
0
5.0
6.0
7.0
6.0
V
in
, INPUT VOLTAGE (V)
Figure 15. NCP302L/3L Series 0.9 V
Reset Output Voltage vs. Input Voltage
Figure 16. NCP302L/3L Series 2.7 V
Reset Output Voltage vs. Input Voltage
Figure 17. NCP302L/3L Series 4.5 V
Reset Output Voltage vs. Input Voltage
16
0
V
OUT
, OUTPUT VOLTAGE (V)
12
8.0
4.0
0
0.2
0.4
0.6
0.8
1.0
2.0
6.0
10
14
0
0.5
1.0
1.5
2.0
2.5
V
OUT
, OUTPUT VOLTAGE (V)
1.2
0.6
0.4
0
0.2
0.8
1.0
0
35
25
15
5.0
0.5
1.0
1.5
2.0
2.5
3.0
10
0
3.5
4.0
20
30
V
OUT
, OUTPUT VOLTAGE (V)
Figure 18. NCP302H/3L Series 0.9 V
Reset Output Sink Current vs. Output Voltage
Figure 19. NCP302H/3L Series 2.7 V
Reset Output Sink Current vs. Output Voltage
Figure 20. NCP302H/3L Series 4.5 V
Reset Output Sink Current vs. Output Voltage
V
in
= 0.85 V
T
A
= 25
C
T
A
= 25
C
T
A
= 25
C
V
in
= 0.7 V
V
in
= 4.0 V
V
in
= 3.5 V
V
in
= 3.0 V
V
in
= 2.5 V
V
in
= 2.0 V
V
in
= 1.5 V
V
in
= 2.5 V
V
in
= 2.0 V
V
in
= 1.5 V
I
OUT
, OUTPUT SINK CURRENT (mA)
I
OUT
, OUTPUT SINK CURRENT (mA)
V
OUT
, OUTPUT VOL
T
AGE (V)
V
OUT
, OUTPUT VOL
T
AGE (V)
V
OUT
, OUTPUT VOL
T
AGE (V)
T
A
= -30
C (303L only)
T
A
= 25
C (303L only)
T
A
= 85
C (303L only)
T
A
= -30
C (303L only)
T
A
= 25
C (303L only)
T
A
= 85
C (303L only)
T
A
= -30
C (303L only)
T
A
= 25
C (303L only)
T
A
= 85
C (303L only)
NCP302, NCP303
http://onsemi.com
14
Figure 21. NCP302/3 Series 0.9 V
Input Current vs. Input Voltage
Figure 22. NCP302/3 Series 2.7 V
Input Current vs. Input Voltage
Figure 23. NCP302/3 Series 4.5 V
Input Current vs. Input Voltage
Figure 24. NCP302/3 Series 0.9 V
Reset Output Time Delay vs. Temperature
Figure 25. NCP302/3 Series 2.7 V
Reset Output Time Delay vs. Temperature
Figure 26. NCP302/3 Series 4.5 V
Reset Output Time Delay vs. Temperature
-50
T
A
, AMBIENT TEMPERATURE (
C)
300
250
200
200
100
150
0
50
-25
0
25
50
75
100
100
0
-50
-25
0
25
50
75
100
T
A
, AMBIENT TEMPERATURE (
C)
50
150
250
350
-50
T
A
, AMBIENT TEMPERATURE (
C)
250
200
150
50
-25
0
25
50
75
100
100
0
C
D
= 0.1
m
F
C
D
= 0.1
m
F
C
D
= 0.1
m
F
t
D2
, OUTPUT TIME DELA
Y (ms)
t
D2
, OUTPUT TIME DELA
Y (ms)
t
D2
, OUTPUT TIME DELA
Y (ms)
I
in
, INPUT CURRENT (
m
A)
V
in
, INPUT VOLTAGE (V)
T
A
= 25
C
I
in
, INPUT CURRENT (
m
A)
T
A
= 25
C
0
2.0
6.0
8.0
10
2.0
1.5
1.0
0.5
0
V
in
, INPUT VOLTAGE (V)
4.0
2.5
5.5
I
in
, INPUT CURRENT (
m
A)
T
A
= 25
C
0
2.0
6.0
8.0
2.0
1.5
1.0
0.5
0
V
in
, INPUT VOLTAGE (V)
4.0
2.5
10
11.8
0
0.2
0.4
0.6
0.8
1.0
1.2
0
2.0
4.0
6.0
8.0
10
NCP302, NCP303
http://onsemi.com
15
I
CD
, C
D
DELA
Y PIN SINK CURRENT (mA)
I
CD
, C
D
DELA
Y PIN SINK CURRENT (mA)
T
A
= 25
C
T
A
= 25
C
T
A
= 25
C
Figure 27. NCP302H/3L Series 0.9 V
Reset Output Sink Current vs. Input Voltage
Figure 28. NCP302H/3L Series 2.7 V
Reset Output Sink Current vs. Input Voltage
Figure 29. NCP302H/3L Series 4.5 V
Reset Output Sink Current vs. Input Voltage
V
in
, INPUT VOLTAGE (V)
V
in
, INPUT VOLTAGE (V)
V
in
, INPUT VOLTAGE (V)
Figure 30. NCP302/3 Series 0.9 V
C
D
Delay Pin Sink Current vs. Input Voltage
Figure 31. NCP302/3 Series 2.7 V
C
D
Delay Pin Sink Current vs. Input Voltage
Figure 32. NCP302/3 Series 4.5 V
C
D
Delay Pin Sink Current vs. Input Voltage
0.6
0.4
0.2
0
0.1
0.3
0.5
0.7
0
0.2
0.4
0.6
0.8
1.0
0
5.0
3.0
1.0
0.5
1.0
1.5
2.0
2.5
3.0
2.0
0
4.0
0
1.0
2.0
3.0
4.0
5.0
6.0
3.0
2.0
0
1.0
4.0
5.0
T
A
= -30
C
T
A
= 85
C
T
A
= -30
C
T
A
= 85
C
T
A
= -30
C
T
A
= 85
C
I
CD
, C
D
DELA
Y PIN SINK CURRENT (mA)
I
OUT
, OUTPUT SINK CURRENT (mA)
I
OUT
, OUTPUT SINK CURRENT (mA)
V
in
, INPUT VOLTAGE (V)
1.2
0.8
0.4
0
0.2
0.6
1.0
1.6
0
0.2
0.4
0.6
0.8
1.0
V
in
, INPUT VOLTAGE (V)
0
9.0
5.0
3.0
1.0
0.5
1.0
1.5
2.0
2.5
3.0
2.0
0
4.0
8.0
T
A
= 25
C
T
A
= -30
C
T
A
= 85
C
T
A
= 25
C
T
A
= -30
C
T
A
= 85
C
1.4
V
OUT
= 0.5 V
V
OUT
= 0.5 V
7.0
6.0
I
OUT
, OUTPUT SINK CURRENT (mA)
V
in
, INPUT VOLTAGE (V)
0
1.0
2.0
3.0
4.0
5.0
14
6.0
4.0
0
2.0
8.0
10
T
A
= 25
C
T
A
= -30
C
T
A
= 85
C
V
OUT
= 0.5 V
12
V
CD
= 0.5 V
V
CD
= 0.5 V
V
CD
= 0.5 V
NCP302, NCP303
http://onsemi.com
16
I
OUT
, OUTPUT SOURCE CURRENT (mA)
Figure 33. NCP302L Series 0.9 V
Reset Output Source Current vs. Input Voltage
10
8.0
2.0
0
0
2.0
4.0
6.0
8.0
10
V
in
, INPUT VOLTAGE (V)
4.0
6.0
12
Figure 34. NCP302L Series 2.7 V
Reset Output Source Current vs. Input Voltage
10
8.0
0
0
2.0
4.0
6.0
8.0
10
V
in
, INPUT VOLTAGE (V)
2.0
4.0
6.0
12
Figure 35. NCP302L Series 4.5 V
Reset Output Source Current vs. Input Voltage
Figure 36. NCP302/3 Series
Delay Resistance vs. Temperature
1.6
1.2
0.8
0.4
0
-50
-25
0
25
50
75
100
T
A
, AMBIENT TEMPERATURE (
C)
V
OUT
= V
in
-2.1 V
V
in
-1.5 V
V
OUT
= V
in
-2.1 V
10
8.0
0
0
2.0
4.0
6.0
8.0
10
V
in
, INPUT VOLTAGE (V)
2.0
4.0
6.0
12
V
in
-1.0 V
V
in
-0.5 V
V
in
-1.5 V
V
in
-1.0 V
V
in
-0.5 V
V
OUT
= V
in
-2.1 V
V
in
-1.5 V
V
in
-1.0 V
V
in
-0.5 V
T
A
= 25
C
T
A
= 25
C
T
A
= 25
C
R
D
, DELA
Y RESIST
ANCE (M
W
)I
OUT
, OUTPUT SOURCE CURRENT (mA)
I
OUT
, OUTPUT SOURCE CURRENT (mA)
2.0
NCP302, NCP303
http://onsemi.com
17
OPERATING DESCRIPTION
The NCP302 and NCP303 series devices consist of a
precision voltage detector that drives a time delay generator.
Figures 37 and 38 show a timing diagram and a typical
application. Initially consider that input voltage V
in
is at a
nominal level and it is greater than the voltage detector upper
threshold (V
DET+
). The voltage at Pin 5 and capacitor C
D
will be at the same level as V
in
, and the reset output (Pin 1)
will be in the high state for active low devices, or in the low
state for active high devices. If there is a power interruption
and V
in
becomes significantly deficient, it will fall below the
lower detector threshold (V
DET-
) and the external time
delay capacitor C
D
will be immediately discharged by an
internal N-Channel MOSFET that connects to Pin 5. This
sequence of events causes the Reset output to be in the low
state for active low devices, or in the high state for active
high devices. After completion of the power interruption,
V
in
will again return to its nominal level and become greater
than the V
DET+
. The voltage detector will turn off the
N-Channel MOSFET and allow pullup resistor R
D
to charge
external capacitor C
D
, thus creating a programmable delay
for releasing the reset signal. When the voltage at Pin 5
exceeds the inverter/buffer threshold, typically 0.675 V
in
,
the reset output will revert back to its original state. The reset
output time delay versus capacitance is shown in Figures 12
through 14. The voltage detector and inverter/buffer have
built-in hysteresis to prevent erratic reset operation.
Although these device series are specifically designed for
use as reset controllers in portable microprocessor based
systems, they offer a cost-effective solution in numerous
applications where precise voltage monitoring and time
delay are required. Figures 38 through 45 show various
application examples.
Figure 37. Timing Waveforms
t
D2
V
in
V
DET
+
V
DET-
Input Voltage, Pin 2
Capacitor, Pin 5
V
in
0 V
Reset Output (Active Low), Pin 1
V
in
Reset Output (Active High), Pin 1
V
in
0 V
0.675 V
in
V
DET-
V
DET-
NCP302, NCP303
http://onsemi.com
18
APPLICATION CIRCUIT INFORMATION
Figure 38. Microprocessor Reset Circuit
2
Input
1
Reset Output
GN
D
5
C
D
NCP302
LSN27T1
Figure 39. Battery Charge Indicator
2
Input
1
Reset Output
GN
D
GND
V
DD
Reset
V
DD
5
C
D
C
D
NCP302
Series
3
3
Microprocessor
*
Required for
NCP303
V
in
< 2.7 ON
V
in
> 2.835 ON
To Additional Circuitry
2
Input
1
Reset Output
GN
D
5
C
D
NCP303
LSN45T1
Figure 40. Missing Pulse Detector or Frequency Detector
3
V
supply
To Additional Circuitry
C
D
*
Reset Output
C
D
Input
[
0.675*V
in
Missing Pulse
t
D2
470 k
0.001
m
F
2.85 V
2.70 V
0 V
5.0 V
1.0 V
0 V
V
in
NCP302, NCP303
http://onsemi.com
19
Figure 41. Microprocessor Reset Circuit with Additional Hysteresis
2
1
NCP301
LSN27T1
3
V
DD
GN
D
Reset Output
Input
R
H
R
L
NCP301
LSN27T1
GN
D
NCP303
LSN27T1
GN
D
GN
D
Reset
V
DD
Microprocessor
5
C
D
Comparator hysteresis can be increased with the addition of
resistor R
H
. The hysteresis equations have been simplified and
do not account for the change of input current I
in
as V
in
crosses
the comparator threshold. The internal resistance, R
in
is simply
calculated using I
in
= 0.26
m
A at 2.6 V.
V
in
Decreasing:
V
th
+
R
H
R
in
)
1
V
DET
*
V
in
Increasing:
V
th
+
R
H
R
in
R
L
)
1
V
DET
*
)
V
HYS
V
HYS
= V
in
Increasing - V
in
Decreasing
Test Data
V
th
Decreasing
(V)
V
th
Increasing
(V)
V
HYS
(V)
R
H
(
W
)
R
L
(k
W
)
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.70
2.84
2.87
2.88
2.91
2.90
2.94
2.98
2.70
3.04
3.15
0.135
0.17
0.19
0.21
0.20
0.24
0.28
0.27
0.34
0.35
0
100
100
100
220
220
220
470
470
470
-
10
6.8
4.3
10
6.8
4.3
10
6.8
4.3
Figure 42. Simple Clock Oscillator
NCP301
LSN27T1
GN
D
Reset Output
Input
82 k
NCP301
LSN27T1
GN
D
NCP302
HSN27T1
GN
D
C
5.0 V
100 k
C (
m
F)
f
OSC
(kHz)
I
Q
(
m
A)
0.01
2590
21.77
0.1
490
21.97
1.0
52
22.07
Test Data
5
C
D
2
3
1
NCP302, NCP303
http://onsemi.com
20
Figure 43. Microcontroller Systems Load Sensing
NCP301
LSN27T1
50 k
NCP301
LSN27T1
NCP303
LSN09T1
V
supply
Load
R
sense
Input
2
3
GND
1
Reset Output
Microcontroller
GND
V
DD
If:
I
Load
t
V
DET -
/R
sense
I
Load
w
(V
DET -
+V
HYS
)/R
sense
Then:
Reset Output = 0 V
Reset Output = V
DD
This circuit monitors the current at the load. As
current flows through the load, a voltage drop with
respect to ground appears across R
sense
where
V
sense
= I
load
* R
sense.
The following conditions apply:
5
C
D
Figure 44. LED Bar Graph Voltage Monitor
NCP301
LSN27T1
2
NCP301
LSN27T1
NCP303
LSN45T1
3
1
V
supply
NCP301
LSN27T1
2
NCP301
LSN27T1
NCP303
LSN27T1
3
1
NCP301
LSN27T1
2
NCP301
LSN27T1
NCP303
LSN18T1
3
1
Input
GND
Reset
Output
Input
GND
Reset
Output
Input
GND
Reset
Output
V
in
= 1.0 V to 10 V
A simple voltage monitor can be constructed by connecting several voltage detectors as shown above. Each LED will
sequentially turn on when the respective voltage detector threshold (V
DET-
+V
HYS
) is exceeded. Note that detector
thresholds (V
DET-
) that range from 0.9 V to 4.9 V in 100 mV steps can be manufactured.
5
C
D
5
C
D
5
C
D
NCP302, NCP303
http://onsemi.com
21
2
Input
1
Reset Output
GN
D
5
C
D
NCP303
LSN18T1
3
Reset Output
To MCU or Logic
Circuitry
Power Supply 1
Power Supply 2
Power Supply 3
2
Input
1
GN
D
NCP300
LSN45T1
3
GN
D
3
2
Input
1
GN
D
NCP300
LSN33T1
3
GN
D
3
For monitoring power supplies with a time delay reset, only a single NCP303 with delay capacitor is required.
Figure 45. Multiple Power Supply Undervoltage
Supervision with Time Delay Reset
Reset Output
Reset Output
NCP302, NCP303
http://onsemi.com
22
ORDERING INFORMATION
Device
Threshold
Voltage
Output
Type
Reset
Marking
Package
Shipping
NCP302LSN09T1
0.9
SBO
TSOP-5
NCP302LSN09T1G
0.9
SBO
TSOP-5
(Pb-Free)
NCP302LSN15T1
1.5
SBI
TSOP-5
NCP302LSN18T1
1.8
SBF
TSOP-5
NCP302LSN20T1
2.0
SBD
TSOP-5
NCP302LSN27T1
2.7
SAW
TSOP-5
NCP302LSN27T1G
2.7
SAW
TSOP-5
(Pb-Free)
NCP302LSN30T1
3.0
SAT
TSOP-5
NCP302LSN30T1G
3.0
CMOS
Active
SAT
TSOP-5
(Pb-Free)
NCP302LSN33T1
3.3
CMOS
Active
Low
SAQ
TSOP-5
NCP302LSN33T1G
3.3
SAQ
TSOP-5
(Pb-Free)
NCP302LSN38T1
3.8
SAK
TSOP-5
(Pb-Free)
NCP302LSN38T1G
3.8
SAK
TSOP-5
NCP302LSN40T1
4.0
SAI
TSOP-5
NCP302LSN43T1
4.3
SAF
TSOP-5
3000 / Tape & Reel
(7 inch Reel)
NCP302LSN45T1
4.5
SAL
TSOP-5
(7 inch Reel)
NCP302LSN45T1G
4.5
SAL
TSOP-5
(Pb-Free)
NCP302LSN47T1
4.7
SAC
TSOP-5
NCP302HSN09T1
0.9
SDO
TSOP-5
NCP302HSN18T1
1.8
SFH
TSOP-5
NCP302HSN27T1
2.7
SDK
TSOP-5
NCP302HSN30T1
3.0
CMOS
Active
Hi h
SDI
TSOP-5
NCP302HSN40T1
4.0
CMOS
c
e
High
SJH
TSOP-5
NCP302HSN45T1
4.5
SDG
TSOP-5
NCP302HSN45T1G
4.5
SDG
TSOP-5
(Pb-Free)
NCP303LSN09T1
0.9
SDE
TSOP-5
NCP303LSN09T1G
0.9
SDE
TSOP-5
(Pb-Free)
NCP303LSN10T1
1.0
Open
Drain
Active
Low
SDD
TSOP-5
NCP303LSN10T1G
1.0
Drain
Low
SDD
TSOP-5
(Pb-Free)
NCP303LSN11T1
1.1
SDC
TSOP-5
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices, ranging
from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments can be
manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional devices are
shown in Tables 1 and 2.
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
NCP302, NCP303
http://onsemi.com
23
ORDERING INFORMATION
Device
Threshold
Voltage
Output
Type
Reset
Marking
Package
Shipping
NCP303LSN13T1
1.3
SDA
TSOP-5
NCP303LSN14T1
1.4
SCZ
TSOP-5
NCP303LSN15T1
1.5
SCY
TSOP-5
NCP303LSN15T1G
1.5
SCY
TSOP-5
(Pb-Free)
NCP303LSN16T1
1.6
SCX
TSOP-5
NCP303LSN18T1
1.8
SCV
TSOP-5
NCP303LSN20T1
2.0
SCT
TSOP-5
NCP303LSN20T1G
2.0
SCT
TSOP-5
(Pb-Free)
NCP303LSN22T1
2.2
SCR
TSOP-5
NCP303LSN23T1
2.3
SCQ
TSOP-5
NCP303LSN24T1
2.4
SCP
TSOP-5
NCP303LSN25T1
2.5
SCO
TSOP-5
NCP303LSN25T1G
2.5
SCO
TSOP-5
(Pb-Free)
NCP303LSN26T1
2.6
SCN
TSOP-5
NCP303LSN26T1G
2.6
Open
Drain
Active
Low
SCN
TSOP-5
(Pb-Free)
3000 / Tape & Reel
(7 inch Reel)
NCP303LSN27T1
2.7
Drain
Low
SCM
TSOP-5
(7 inch Reel)
NCP303LSN27T1G
2.7
SCM
TSOP-5
(Pb-Free)
NCP303LSN28T1
2.8
SCL
TSOP-5
NCP303LSN28T1G
2.8
SCL
TSOP-5
(Pb-Free)
NCP303LSN29T1
2.9
SCK
TSOP-5
NCP303LSN29T1G
2.9
SCK
TSOP-5
(Pb-Free)
NCP303LSN30T1
3.0
SCJ
TSOP-5
NCP303LSN30T1G
3.0
SCJ
TSOP-5
(Pb-Free)
NCP303LSN31T1
3.1
SCI
TSOP-5
NCP303LSN32T1
3.2
SCH
TSOP-5
NCP303LSN33T1
3.3
SCG
TSOP-5
NCP303LSN34T1
3.4
SCF
TSOP-5
NCP303LSN36T1
3.6
SCD
TSOP-5
NCP303LSN38T1
3.8
SCA
TSOP-5
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices, ranging
from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments can be
manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional devices are
shown in Tables 1 and 2.
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
NCP302, NCP303
http://onsemi.com
24
ORDERING INFORMATION
Device
Threshold
Voltage
Output
Type
Reset
Marking
Package
Shipping
NCP303LSN40T1
4.0
SBY
TSOP-5
NCP303LSN42T1
4.2
SBW
TSOP-5
NCP303LSN42T1G
4.2
SBW
TSOP-5
(Pb-Free)
NCP303LSN44T1
4.4
SBU
TSOP-5
NCP303LSN44T1G
4.4
Open
Active
SBU
TSOP-5
(Pb-Free)
3000 / Tape & Reel
NCP303LSN45T1
4.5
O en
Drain
Active
Low
SBT
TSOP-5
3000 / Ta e & Reel
(7 inch Reel)
NCP303LSN45T1G
4.5
SBT
TSOP-5
(Pb-Free)
NCP303LSN46T1
4.6
SBS
TSOP-5
NCP303LSN46T1G
4.6
SBS
TSOP-5
(Pb-Free)
NCP303LSN47T1
4.7
SBR
TSOP-5
NOTE: The ordering information lists standard undervoltage thresholds with active low outputs. Additional active low threshold devices, ranging
from 0.9 V to 4.9 V in 100 mV increments and NCP302 active high output devices, ranging from 0.9 V to 4.9 V in 100 mV increments can be
manufactured. Contact your ON Semiconductor representative for availability. The electrical characteristics of these additional devices are
shown in Tables 1 and 2.
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
NCP302, NCP303
http://onsemi.com
25
PACKAGE DIMENSIONS
0.7
0.028
1.0
0.039
mm
inches
SCALE 10:1
0.95
0.037
2.4
0.094
1.9
0.074
*For additional information on our Pb-Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. MAXIMUM LEAD THICKNESS INCLUDES
LEAD FINISH THICKNESS. MINIMUM LEAD
THICKNESS IS THE MINIMUM THICKNESS
OF BASE MATERIAL.
4. A AND B DIMENSIONS DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS.
DIM
MIN
MAX
MIN
MAX
INCHES
MILLIMETERS
A
2.90
3.10 0.1142 0.1220
B
1.30
1.70 0.0512 0.0669
C
0.90
1.10 0.0354 0.0433
D
0.25
0.50 0.0098 0.0197
G
0.85
1.05 0.0335 0.0413
H
0.013
0.100 0.0005 0.0040
J
0.10
0.26 0.0040 0.0102
K
0.20
0.60 0.0079 0.0236
L
1.25
1.55 0.0493 0.0610
M
0
10
0
10
S
2.50
3.00 0.0985 0.1181
0.05 (0.002)
1
2
3
5
4
S
A
G
L
B
D
H
C
K
M
J
_
_
_
_
THIN SOT-23-5/TSOP-5/SC59-5
CASE 483-02
ISSUE C
NCP302, NCP303
http://onsemi.com
26
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
"Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800-282-9855 Toll Free
USA/Canada
Japan: ON Semiconductor, Japan Customer Focus Center
2-9-1 Kamimeguro, Meguro-ku, Tokyo, Japan 153-0051
Phone: 81-3-5773-3850
NCP302/D
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 61312, Phoenix, Arizona 85082-1312 USA
Phone: 480-829-7710 or 800-344-3860 Toll Free USA/Canada
Fax: 480-829-7709 or 800-344-3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: http://onsemi.com
Order Literature: http://www.onsemi.com/litorder
For additional information, please contact your
local Sales Representative.
PDF 
ZIP