Positive voltage regulator for battery charger
Features
■ Reverse leakage current less than 10 µA
■ Three terminal fixed version (13.7 V) output
current in excess of 1.5 A
■ Available in ± 1 % (AC) selection at 25 °C
■ Typical dropout voltage 2 V
■ Temperature range 0 to 150 °C
PB137
Description
The PB137 is a positive voltage regulator able to
provide 1.5 A, at V
charger for lead acid battery. The main feature is
a reverse leakage current (Max 10 µA at T
40 °C V
= floating and VO = 13.7 V). It is available
I
in TO-220 and it employs internal current limiting,
thermal shut-down and safe area protection,
making it essentially indestructible. If adequate
heat-sinking is provided, they can deliver over 1 A
output current.
= 13.7 V and is intended as a
O
= 0 to
J
TO-220
Table 1. Device summary
Order code Package Output voltage
PB137ACV TO-220 1.5 V
November 2010 Doc ID 6278 Rev 5 1/14
www.st.com
14
Contents PB137
Contents
1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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PB137 Diagram
1 Diagram
Figure 1. Schematic diagram
Doc ID 6278 Rev 5 3/14
Pin configuration PB137
2 Pin configuration
Figure 2. Pin connections (top view)
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PB137 Application
3 Application
Figure 3. Application circuit
Doc ID 6278 Rev 5 5/14
Maximum ratings PB137
4 Maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
T
P
T
V
I
TOT
STG
OP
DC input voltage 40 V
I
Output current Internally limited mA
O
Power dissipation Internally limited mW
Storage temperature range - 65 to 150 °C
Operating junction temperature range 0 to 150 °C
Note: Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 3. Thermal data
Symbol Parameter Value Unit
R
thJC
R
thJA
Thermal resistance junction-case 5 °C/W
Thermal resistance junction-ambient 50 °C/W
6/14 Doc ID 6278 Rev 5
PB137 Electrical characteristics
5 Electrical characteristics
Refer to the test circuits, VI = 18 V, IO = 500 mA, TJ = 0 to 150 °C, CO = 10 µF unless
otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
Output voltage TJ = 25 °C
O
ΔV
ΔV
Line regulation VI = 16 to 28.7 V, TJ = 25 °C 60 150 mV
O
Load regulation IO = 5 to 1500 mA, TJ = 25 °C 65 100 mV
O
Quiescent current TJ = 25 °C 4 8 mA
I
d
Delta quiescent current vs.
ΔI
d
line
Delta quiescent current vs.
ΔI
d
load
V
Dropout voltage IO = 1 A, TJ = 25 °C 2.1 2.6 V
d
I
Short circuit current VI - VO = 5 V, TJ = 25 °C 2.2 A
sc
= 16 to 28.7 V 4 mA
V
I
= 5 to 1000 mA 1.2 mA
I
O
eN Output noise voltage B = 10 Hz to 10 kHz, T
SVR Supply voltage rejection f = 120 Hz, T
I
Reverse leakage current VO = 13.7 V, VI = floating, TJ = 0 to 40 °C 0.1 10 µA
REV
S Long term stability T
= 125 °C, 1000 Hrs 0.5 %
J
= 25 °C 58 dB
J
13.56 13.7 13.84
V
13.43 13.7 13.97
= 25 °C 300 µVrms
J
Doc ID 6278 Rev 5 7/14
Typical characteristics PB137
6 Typical characteristics
TJ = 25°C.
Figure 4. Output voltage vs. temperature Figure 5. Output voltage vs. input voltage
Figure 6. Output voltage vs. output current Figure 7. Load regulation vs. temperature
Figure 8. Line regulation vs. temperature Figure 9. Dropout voltage vs. temperature
8/14 Doc ID 6278 Rev 5
PB137 Typical characteristics
Figure 10. Dropout voltage vs. output current Figure 11. Short circuit current vs. dropout
voltage
Figure 12. Short circuit current vs.
temperature
Figure 13. Reverse leakage current vs.
temperature
Figure 14. Quiescent current vs. temperature Figure 15. Quiescent current vs. output
current
Doc ID 6278 Rev 5 9/14
Typical characteristics PB137
Figure 16. Quiescent current vs. input voltage Figure 17. Thermal protection
Figure 18. Supply voltage rejection vs. output
Figure 20. Line transient response Figure 21. Load transient response
current
Figure 19. Supply voltage rejection vs.
temperature
VI = 17 to 28.4 V, IO = 0.5 A, CO = 10 µF
VI = 18 V, IO = 5 to 1.5 A, CI = 1 µF, CO = 10 µF
10/14 Doc ID 6278 Rev 5
PB137 Package mechanical data
7 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
Doc ID 6278 Rev 5 11/14
Package mechanical data PB137
TO-220 mechanical data
Dim.
A 4.40 4.60 0.173 0.181
C1.23 1.32 0.048 0.051
D 2.40 2.72 0.094 0.107
D1 1.27 0.050
E0.49 0.70 0.019 0.027
F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.067
F2 1.14 1.70 0.044 0.067
G4.95 5.15 0.194 0.203
G1 2.4 2.7 0.094 0.106
H2 10.0 10.40 0.393 0.409
L2 16.4 0.645
L4 13.0 14.0 0.511 0.551
L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.2 6.6 0.244 0.260
L93.5 3.93 0.137 0.154
DIA. 3.75 3.85 0.147 0.151
Min. Typ. Max. Min. Typ. Max.
mm. inch.
12/14 Doc ID 6278 Rev 5
P011C
PB137 Revision history
8 Revision history
Table 5. Document revision history
Date Revision Changes
21-Jun-2004 4
18-Nov-2010 5 Modified: R
value for TO-220 Table 3 on page 6.
thJC
Doc ID 6278 Rev 5 13/14
PB137
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14/14 Doc ID 6278 Rev 5
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