1
Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
400mA Low Dropout Voltage Regulator
SPX2975
DESCRIPTION
FEATURES
5V Fixed Output
High Accuracy
Very Low Current Consumption: 70A
Power-on and Under Voltage Reset
Reset Low Down to V
OUT
= 1V
Extremely Low Dropout Voltage
Short Circuit Protection
Programmable Safety Timer
4kV ESD Protection
Sipex's SPX2975 is a low dropout linear regulator with integrated PNP pass transistor. The part
is available in a 5 pin TO-220 package or surface mount TO-263. The part used to convert an
automotive battery voltage, with allowable input up to 45V, down to 5V with at least 400mA output
current delivered. Internal power consumption is kept to 60uA ideal for applications where micro-
power operation is important. At over-temperature the SPX2975 is turned off by the integrated
temperature protection circuit. A reset signal is generated for a typical output voltage of 4.65V
with a time delay that can be programmed by an external delay capacitor.
TYPICAL APLICATION CIRCUIT
SPX2975
I
1000F
V
OUT
I
IN
C
12
C
11
100nF
V
IN
V
RD
C
D
47nF
RD
I
GND
GND
I
OUT
V
OUT
RO
I
RO
R
EXT
5k
C
Q
22F
1
4
5
2
3
I
RD,c
I
RD,d
V
RD
APPLICATIONS
Automotive Electronics
Wireless Station
Industrial Systems
Now Available in Lead Free Packaging
1
2 3 4 5
SPX2975
5 Pin TO-263
I
GND
V
OUT
RD
RO
3
2
1
SPX2975
5 Pin TO-220
I
GND
V
OUT
RD
4 5
RO
2
Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
Input Voltage ...................................................................... -42V to 45V
Output Voltage .................................................................... -1.0 to 16V
Output Current ............................................................ Internally limited
Reset Output Voltage .......................................................... -0.3 to 25V
Reset Output Current ..................................................... -5mA to +5mA
Reset Delay Voltage ........................................................ -0.3V to 7.0V
Reset Delay Current ......................................................... -2mA to 2mA
Storage Temperature .................................................. -50C to +150C
Junction Temperature.(Note 1) ................................... -40C to +150C
5 Pin TO-220
T
JA
...............................................................................................27.8C/W
T
JC
.................................................................................................79C/W
5 Pin T0 263
T
JA
...............................................................................................57.2C/W
T
JC
................................................................................................7.6C/W
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
ELECTRICAL CHARACTERISTICS
V
IN
= 13.5V; -40C < T
j
< 150C. Unless otherwise specified.
ABSOLUTE MAXIMUM RATINGS
Note 1: Specifications in the -40C to 150C range are guaranteed by design, not production tested.
Note 2: Measured when the output voltage (Vout) has dropped 100mV form the nominal value obtained at Vin=13.5V
PARAMETER
MIN
TYP
MAX
UNITS
CONDITIONS
Input Voltage
5.5
42
V
Junction Temperature
-40
150
C
Output Voltage
4.9
5.0
5.1
V
5mA < I
Q
< 400mA
6V < V
I
< 28V
Output Voltage
4.9
5.0
5.1
V
5mA < I
Q
< 200mA
6V < V
I
< 40V
Output Current limitation (note 1)
450
700
V
Output Leakage Current
0.1
100
A
Current Consumption
70
200
A
I
OUT
= 1mA
Current Consumption
7
10
mA
I
OUT
= 250mA
Current Consumption
17
22
mA
I
OUT
= 400mA
Dropout Voltage (note 2)
350
500
mV
I
OUT
= 300mA
V
DO
= V
OUT
- V
IN
Load Regulation
5
30
mV
I
OUT
= 5mA to 400mA
Line Regulation
-15
2
15
mV
V
IN
= 8V to 32V
I
OUT
= 5mA
PSRR
60
dB
fr = 100Hz; Vr = 0.5Vpp
Temperature Output Voltage Drift
0.2
mV/K
Reset Switching Threshold
4.5
4.65
4.8
V
V
TH
Reset Output Low Voltage
0.2
0.4
V
Rext 5k ; V
OUT
> 1 V
Reset Output Leakage Current
0
10
A
VROH = 5V
Reset Charging Current
3.0
5.5
9.0
A
V
RD
= 1V
Upper Timing Threshold
1.5
1.8
2.2
V
Vth
H
Lower Timing Threshold
0.2
0.4
0.7
V
Vth
L
Reset Delay Time
10
16
22
mS
C
O
= 47nF, Td
Reset Reaction Time
0.5
2.0
s
C
O
= 47nF, Trv
3
Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
PIN DESCRIPTION
PIN NUMBER
PIN NAME
DESCRIPTION
1
V
IN
LDO Input. Bypass V
IN
to GND with a Ceramic capacitor.
2
RO
Reset Output. RO remains low while V
OUT
is below the reset switching
threshold. RO is in open conector output.
3
GND
Ground. This pin also functions as a heatsink. Solder to large pads or the
circuit-board ground plane to maximize thermal dissipation.
4
RD
Reset Delay. RD connects capacitor to GND for setting delay time.
5
V
OUT
LDO Output. Bypass V
OUT
to GND with a minimum 22F capacitor with
ESR less than 5 at 10kHz.
Buffer
Temperature
Sensor
Current
Limit
Bandgap
Reference
4
1
V
IN
RD
Saturation
Control &
Protection
Circuit
Reset
Generator
3
GND
2
RO
V
OUT
5
FUNCTIONAL DIAGRAM
V
OUT
V
RD
V
RO
Td
V
thH
= 1.8V
V
thL
= 0.4V
<Trr
Trr
V
ROL
= 0.2V
V
th
= 4.65V
Reset Timing
4
Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
Output Current IQ Vs Temperature Tj
0
100
200
300
400
500
600
700
800
-40
-20
0
20
40
60
80
100
120
140
160
Tj (DegC)
IQ (mA)
Dropout Voltage Vdr Vs Output Current IQ
0
200
400
600
800
1000
1200
0
100
200
300
400
500
600
Output Current IQ
Dropout Voltage Vdr (mV)
125C
25C
Current Consumption Iq vs Output Current IQ
0
1
2
3
0
20
40
60
80
100
120
Output Current IQ (mA)
Iq (mA)
Current Consumption Iq vs Output Current IQ
0
10
20
30
40
50
60
0
100
200
300
400
500
600
Output Current IQ (mA)
Iq (mA)
TPYICAL PERFORMANCE CHARACTERISTICS
5
Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
Vout vs Temperature
4.80
4.85
4.90
4.95
5.00
5.05
5.10
5.15
5.20
-40
10
60
110
160
Temperature (C)
Vout @ 42V (V)
Load Regulation vs Temperature
0.000
0.005
0.010
0.015
0.020
0.025
0.030
-40
10
60
110
160
Temperature (C)
Load Regulation (V)
Reset Threshold vs Temperature
4.5
4.55
4.6
4.65
4.7
4.75
4.8
-40
10
60
110
160
Temperature (C)
Reset Threshold (V)
Reset Delay vs Temperature
0.010
0.012
0.014
0.016
0.018
0.020
0.022
-40
10
60
110
160
Temperature (C)
Reset Delay Time (sec)
TPYICAL PERFORMANCE CHARACTERISTICS
6
Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
PACKAGE: 5 PIN TO-220
.160 - .190
Dimensions in
(inches)
5 PIN TO-220
.015 - .040
A
b
C1
D
E
MIN NOM MAX
e
e1
F
H1
J1
P
Q
U
V
L
.014 - .022
.560 - .590
.385 - .415
.385 - .415
.062 - .072
.045 - .055
.234 - .258
.090 - .115
.540 - .560
.146 - .156
.103 - .113
- .30 -
- .24 -
L1
- .250
D
B
SEATING
PLANE
F
A
CHAMFER
OPTIONAL
C1
J1
A
A
E
P
Q
D
D1
E/2
L
L1
C C
D
D
b
e1
H1
e
5 PIN TO-220
7
Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
PACKAGE: 5 PIN TO-263
.160 - .190
0 - .010
Dimensions in (mm)
5 PIN TO-263
JEDEC TO-263
(BB) Variation
.020 - .039
.015 - .029
.070 - .110
-
- -
A
A1
b
c
E
E1
L
L1
L2
MIN NOM MAX
e
.067 BSC
.066
-
D1
.270 - -
.380 - .420
.245
-
-
H
.575 - .625
.070
L3
.010 BSC
c
WITH PLATING
BASE METAL
(b)
CONTACT AREA
1
2
3
4
5
E
E
L2
5X b
e
4X
(DATUM A)
c2
.045 - .023
c
C2
A
H
SEATING PLANE
D1
L1
(E)
E1
L
0-8
L3
5 PIN TO-263
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Date: 6/30/04 SPX2975 400mA Low Dropout Voltage Regulator
Copyright 2004 Sipex Corporation
ORDERING INFORMATION
Part number Accuracy
Output Voltage
Package Type
SPX2975U5-5.0 .............. .........2% ......................... 5.0V ..................... 5 Lead TO-220
SPX2975T5-5.0 ............... .........2% ......................... 5.0V ..................... 5 Lead TO-263
SPX2975T5-5.0/TR ......... .........2% ......................... 5.0V ..................... 5 Lead TO-263
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex 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.
/TR = Tape and Reel
Pack quantity is 500 for TO-263.
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX2975T5-5.0/TR = standard; SPX2975T5-5.0-L/TR = lead free
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