MAX1773A Просмотр технического описания (PDF) - Maxim Integrated
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MAX1773A Datasheet PDF : 20 Pages
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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
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 × 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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