PHA-1A/1AEU
21
MAIN BOARD IC701 BQ24073RGTR (BATTERY CHARGER, POWER CONTROLLER)
Pin No. Pin Name I/O Description
1 TS I External NTC thermistor input terminal Not used
2, 3 BAT I/O Battery power input and charge power output terminal
4CE
I Chip enable signal input terminal Not used
5, 6 EN2, EN1 I Current control signal input terminal
7 PGOOD
O
Power supply state detection signal output to the charge controller
“L”: power supply is good, “H”: power supply is failure
8 VSS - Ground terminal
9 CHG
O Charge detection signal output to the charge controller “L”: charging, “H”: non-charging
10, 11 OUT O System power supply output terminal (+3.7V)
12 ILIM I Adjustable current limit programming input terminal
13 IN I DC power supply input terminal (+5V)
14 TMR I Timer programming input terminal Not used
15 TD I Termination disable signal input terminal Not used
16 ISET I Quick charge current programming input terminal Not used