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9

Power Source Selector for

Dual-Battery Systems

Pin Description

PIN

NAME

FUNCTION

1

BATA

Battery A Connection

2

THMA

Thermistor A Input

3

CHGA

Open-Drain Gate Driver for Charge Path MOSFET to Battery A

4

DISA

5

COMA

6

GND

Ground

7

MINV

Minimum Operating Voltage Set Point. The battery voltage switchover set point is 5

8

EXTLD

External Load Connection. Source connection for the PDS, DISA, and DISB MOSFETs.

9

PDS

Gate Driver for the AC Adapter MOSFET

10

ACDET

AC Adapter Detection Input

11

BATSTAT

Open-Drain Battery Status Output. Use a pullup resistor to the system logic supply.

12

ACPRES

Open-Drain AC Presence Output. Use a pullup resistor to the system logic supply.

13

BATSEL

Battery Select Digital Input. Selects which battery to charge or discharge.

14

TCOMP

Externally Set Thermistor Trip Point. Sets the thermistor voltage level for detecting the battery’s

presence.

15

Linear Regulator Output

16

COMB

17

DISB

18

CHGB

Open-Drain Gate Driver for Charge Path MOSFET to Battery B

19

THMB

Thermistor B Input

20

BATB

Battery B Connection