MAX1773(2017) 查看數據表（PDF） - Maxim Integrated

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MAX1773
(Rev.:2017)

Power Source Selector for Dual-Battery Systems

Maxim Integrated 

MAX1773/MAX1773A

Power Source Selector for

Dual-Battery Systems

Pin Configuration

TOP VIEW

BATA 1

THMA 2

CHGA 3

DISA 4

COMA 5

GND 6

MINV 7

EXTLD 8

PDS 9

ACDET 10

MAX1773

MAX1773A

20 BATB

19 THMB

18 CHGB

17 DISB

16 COMB

15 VDD

14 TCOMP

13 BATSEL

12 ACPRES

11 BATSTAT

TSSOP

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

Gate Driver for Discharge Path MOSFET to Battery A. Switches from VEXTLD to (VEXTLD - 9.5V).

5

COMA Gate Driver for Common Path MOSFET to Battery A. Switches from VBATA to (VBATA - 9.5V).

6

GND

Ground

7

MINV

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

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

VDD

Linear Regulator Output

16

COMB Gate Driver for Common Path MOSFET to Battery B. Switches from VBATB to (VBATB - 9.5V).

17

DISB

Gate Driver for Discharge Path MOSFET to Battery B. Switches from VEXTLD to (VEXTLD - 9.5V).

18

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

19

THMB Thermistor B Input

20

BATB

Battery B Connection

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