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2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.1
Features
Output Currents up to 0.5A (output1 & 2)
Output Current up to 1A with External Transistor
(output3)
Fixed Precision Output 1 voltage 3.3V 2%
Fixed Precision Output 2 voltage 8V 2% (KA7632)
Fixed Precision Output 2 voltage 9V 2% (KA7633)
Control Signal Generator for Output 3 voltage (5.1V 2%)
Reset Facility for Output Voltage1
Output 2,3 with Disable by TTL Input
Current Limit Protection at Each Output
Thermal Shut Down
Description
The KA7632/KA7633 is a multi-output positive voltage
regulator designed to provide fixed precision output voltages
of 3.3V, 8V (KA7632) / 9V (KA7633) at current up to 0.5A
and 5.1V at current up to 1A with external PNP transistor.
An internal reset circuit generates a reset pulse when the
output 1 decrease below the regulated value. Output2 & 3
can be disabled by TTL input. Protection features include
over voltage protection, short circuit protection and thermal
shutdown.
10-SIP H/S
Internal Block Diagram
Bandgap
Reference
+
-
OVP
SCP
+
-
OVP
SCP
+
-
+
-
SCP
+
-
SW
Thermal
Shut Down
Output 2,3
4
8
9
3
6
7
10
5
2
1
1.4V
Vsys
10uA
Vin1
Vin2
Output 1
Output 2
Disable
GND
Output3
Control
DEL.CAP
100nF
A614 "Y"
Vin1
Vin2
+
-
RESET
10K
50mV
2.5V
Cd
KA7632/KA7633
Fixed Multi-output Regulator
KA7632/KA7633
2
Absolute Maximum Ratings
Electrical Characteristics(KA7632)
(Refer to test circuit Vin1=6V ,Vin2=10.5V ,Tj = +25
C, unless otherwise specified)
Notes:
1. To check the reset circuit ,the reset output is low to discharge the delay capacitor(=Cd). if it's less than Vo1-0.25V. And the
reset output is high when the delay capacitor voltage linearly increased by the interal current source(10
A) if it's more than
Vo1- 0.2V. The equations of delay time is same as below. Trd = (Cd
2.5) / 10
A
2. These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Value
Unit
Remark
DC Input Voltage
Vin
20
V
-
Disable Input Voltage
Vc
20
V
-
Output Current
Io
0.5
A
-
Power Dissipation
Pd
1.5
W
No Heatsink
Junction Temperature
Tj
+150
C
-
Operating Temperature
Topr
0~+125
C
-
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage 1
Vo1
Io1=10mA
6V<Vin1<14V
5mA<Io1<500mA
3.22
3.14
3.3
3.3
3.38
3.46
V
Output Voltage 2
Vo2
Io2=10mA
10.5V<Vin2<18V
5mA<Io2<500mA
7.84
7.7
8
8
8.16
8.3
V
Dropout Output Voltage 1,2
Vd1,2
Io1,2=500mA
-
-
2.5
V
Line Regulation 1,2
Vo 1,2
6V <Vin1<14V
10.5V <Vin2<18V
Io1,2 = 200mA
-
-
40
80
mV
Load Regulation 1,2
Vo 1,2
5mA < Io1< 500mA
5mA <Io2< 500mA
-
-
70
160
mV
Output Voltage 3
Vo3
Vsys=7V, Io3=100mA
4.97
5.1
5.23
V
Line Regulation 3
Vo3
13V< Vin2 <18V, Io3 =100mA
-
-
50
mV
Load Regulation 3
Vo3
5mA < Io3 < 1A
-
-
110
mV
Reset Pulse Delay
Trd
Cd=100nF, Note1
-
25
-
ms
Saturation Voltage in Reset
Condition
VrL
I6=5mA
-
-
0.4
V
Leakage Current at Pin 6
IrH
V6=10V
-
-
10
A
Output Voltage Thermal Drift
STt
0
C <Tj < +125
C , Note 2
-
100
-
ppm/
C
Short Circuit Output Current
Isc1,2
Vin1=6V ,Vin2 =10.5V
-
-
1.6
A
Disable Voltage High
VdisH
Output 2 Active
2
-
V
Disable Voltage Low
VdisL
Output 2 Disabled
-
-
0.8
V
Disable Bias Current
Idis
0V < Vdis < 7V
-100
-
2
A
Junction Temperature for TSD
Ttsd
Note 2
-
145
-
C
Quiescent Current
Iq
Io1=10mA, Output2 Disabled
-
-
2
mA
Reset Threshold Voltage
Vr
K=Vo1
K-0.4
K-0.25
K-0.1
V
Reset Threshold Hysteresis
Vrth
Note 1
20
50
100
mA
KA7632/KA7633
3
Electrical Characteristics(KA7633)
(Refer to test circuit Vin1=6V ,Vin2=11.5V ,Tj = +25
C, unless otherwise specified)
Notes:
1. To check the reset circuit ,the reset output is low to discharge the delay capacitor(=Cd). if it's less than Vo1-0.25V. And the
reset output is high when the delay capacitor voltage linearly increased by the interal current source(10
A) if it's more than
Vo1- 0.2V. The equations of delay time is same as below. Trd = (Cd
2.5) / 10
A
2. These parameters, although guaranteed, are not 100% tested in production.
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Output Voltage 1
Vo1
Io1=10mA
6V<Vin1<14V
5mA<Io1<500mA
3.22
3.14
3.3
3.3
3.38
3.46
V
Output Voltage 2
Vo2
Io2=10mA
11.5V<Vin2<18V
5mA<Io2<500mA
8.82
8.65
9
9
9.18
9.35
V
Dropout Output Voltage 1,2
Vd1,2
Io1,2=500mA
-
-
2.5
V
Line Regulation 1,2
Vo 1,2
6V <Vin1<14V
11.5V <Vin2<18V
Io1,2 = 200mA
-
-
40
80
mV
Load Regulation 1,2
Vo 1,2
5mA < Io1< 500mA
5mA <Io2< 500mA
-
-
70
160
mV
Output Voltage 3
Vo3
Vsys=7V, Io3=100mA
4.97
5.1
5.23
V
Line Regulation 3
Vo3
13V< Vin2 <18V, Io3 =100mA
-
-
50
mV
Load Regulation 3
Vo3
5mA < Io3 < 1A
-
-
110
mV
Reset Pulse Delay
Trd
Cd=100nF, Note1
-
25
-
ms
Saturation Voltage in Reset
Condition
VrL
I6=5mA
-
-
0.4
V
Leakage Current at Pin 6
IrH
V6=10V
-
-
10
A
Output Voltage Thermal Drift
STt
0
C <Tj < +125
C , Note 2
-
100
-
ppm/
C
Short Circuit Output Current
Isc1,2
Vin1=6V ,Vin2 =11.5V
-
-
1.6
A
Disable Voltage High
VdisH
Output 2 Active
2
-
V
Disable Voltage Low
VdisL
Output 2 Disabled
-
-
0.8
V
Disable Bias Current
Idis
0V < Vdis < 7V
-100
-
2
A
Junction Temperature for TSD
Ttsd
Note 2
-
145
-
C
Quiescent Current
Iq
Io1=10mA, Output2 Disabled
-
-
2
mA
Reset Threshold Voltage
Vr
K=Vo1
K-0.4
K-0.25
K-0.1
V
Reset Threshold Hysteresis
Vrth
Note 1
20
50
100
mA
KA7632/KA7633
4
Typical Perfomance Characteristics
Figure 1. Quiescent Current vs. Input Voltage
Figure 3. Output Voltage2 vs. Input Voltage
Figure 5. Disable Bias Current vs. Disable Voltage
Figure 2. Output Voltage1 vs. Input Voltage
Figure 4. Output Voltage vs. Disable Voltage High(Low)
Figure 6. Output Voltage1 vs. Temperature(Tj)
0
15
5
10
2.0
1.6
1.2
0.8
0.4
0
Q
u
i
e
s
c
ent
cur
r
e
nt
I
q
(
m
A
)
Input voltage Vin (V)
20
T
J
= 25
o
C
Io1 =10mA
Input Voltage Vin (V)
Input voltage Vin (V)
10
15
12
10
8
6
4
2
14
0
0
Out
put
vol
t
age2 Vo
(
V
)
20
5
T
J
= 25
o
C
Io1 =10mA
10.5V<Vin1<18V
5mA<Io1<500mA
2
2
2
Disable Voltage(V)
40
30
20
10
0
D
i
s
abl
e B
i
as
C
u
r
r
ent
(
u
A
)
0 0.4 0.8 1.2 1.6 2.0
10
15
6
5
4
3
2
1
7
0
0
O
u
t
put
vol
t
age
1 V
o
(
V
)
20
5
T
J
= 25
o
C
Io1 =10mA
7.5V<Vin1<14V
5mA<Io1<500mA
Input Voltage Vin (V)
6
O
u
t
put
vo
lt
age
V
o
(V
)
14
12
10
8
6
0
0
3
0.5
1.5
4
2
1
2
2.5
Disable Voltage(V)
Temperature Tj(
)
5.10
5.095
5.09
5.105
-25
O
u
t
p
u
t
vo
l
t
ag
e1
V
o
(
V
)
75
125
0
25
50
100
5.08
5.075
5.07
5.085
KA7632/KA7633
5
Typical Perfomance Characteristics (continued)
Figure 7. Output Voltage2 vs. Temperature(Tj)
Temperature Tj(
)
8.06
8.05
8.04
8.07
-25
75
125
0
25
50
100
8.02
8.01
8.00
8.03
150
KA7632/KA7633
6
Mechanical Dimensions
Package
Dimensions in millimeters
#1
#10
25.75
0.10
1.013
0.004
26.05
1.026
MAX
1.30
0.10
0.051
0.004
0.50
0.10
0.020
0.004
1.65
0.10
0.065
0.004
3.80
0.20
0.150
0.008
0.50
0.10
0.020
0.004
23.86
0.20
0.939
0.008
1.50
0.059
()
1.30
0.051
()
2.54
0.100
7.00
0.30
0.276
0.012
8.90
0.20
0.350
0.008
1.00
0.20
0.039
0.008
3.25
0.20
0.128
0.008
13.65
0.30
0.537
0.012
16.80
0.661
MAX
10-SIP H/S
KA7632/KA7633
7
Ordering Information
Product Number
Package
Operating Temperature
KA7632
10-SIP H/S
0
C to +125
C
KA7633
KA7632/KA7633
8/1/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation
LIFE SUPPORT POLICY
FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
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