PB137
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
TO-220 Description
The PB137 is a positive voltage regulator able to provide 1.5 A, at VO = 13.7 V and is intended as a charger for lead acid battery. The main feature is a reverse leakage current (Max 10 µA at TJ = 0 to 40 °C VI = floating and VO = 13.7 V). It is available 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. Table 1. Device summary
Order code PB137ACV Package TO-220 Output voltage 1.5 V November 2010 Doc ID 6278 Rev 5 1/14
www.st.com 14 Contents PB137 Contents
1 2 3 4 5 6 7 8 Diagram . 3 Pin configuration . 4 Application . 5 Maximum ratings 6 Electrical characteristics . 7 Typical characteristics . 8 Package mechanical data 11 Revision history . 13 2/14 Doc ID 6278 Rev 5 PB137 Diagram 1
Figure 1. Diagram
Schematic diagram Doc ID 6278 Rev 5 3/14 Pin configuration PB137 2
Figure 2. Pin configuration
Pin connections (top view) 4/14 Doc ID 6278 Rev 5 PB137 Application 3
Figure 3. Application
Application circuit Doc ID 6278 Rev 5 5/14 Maximum ratings PB137 4
Table 2.
Symbol VI IO PTOT TSTG TOP Maximum ratings
Absolute maximum ratings
Parameter DC input voltage Output current Power dissipation Storage temperature range Operating junction temperature range Value 40 Internally limited Internally limited -65 to 150 0 to 150 Unit V mA mW °C °C Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Thermal data
Parameter Thermal resistance junction-case Thermal resistance junction-ambient Value 5 50 Unit °C/W °C/W Table 3.
Symbol RthJC RthJA 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.
Symbol VO VO VO Id Id Id Vd Isc eN SVR IREV S Electrical characteristics
Parameter Output voltage Line regulation Load regulation Quiescent current TJ = 25 °C VI = 16 to 28.7 V, TJ = 25 °C IO = 5 to 1500 mA, TJ = 25 °C TJ = 25 °C Test conditions Min. 13.56 13.43 Typ. 13.7 13.7 60 65 4 Max. 13.84 V 13.97 150 100 8 4 1.2 2.1 2.2 300 58 0.1 10 0.5 2.6 mV mV mA mA mA V A µVrms dB µA % Unit De …
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