Pin Function Grouping
Table
| Group | Pins | Why they belong together |
|---|---|---|
| Power Input | IN (13) | Main external input supply pin |
| Battery / Power Path | BAT (2, 3), OUT (10, 11) | Battery node and system output / power-path pins |
| Ground | VSS (8), Thermal Pad / EP | Ground return; datasheet says the exposed pad is internally connected to VSS |
| Charge / Input Programming | ISET (16), ILIM (12), TMR (14) | Pins used to program fast-charge current, input current limit, and safety timer behavior |
| Control | CE (4), EN1 (6), EN2 (5), SYSOFF (15) | Charger enable, USB/input-current mode selection, and system enable control |
| Status Outputs | PGOOD (7), CHG (9) | Open-drain status indication outputs for input-valid and charging state |
| Monitoring / Sense | TS (1) | Battery temperature monitoring input via NTC divider |
Pin Group names
Table
| Pin | Suggested Pin Group |
|---|---|
| TS | TS |
| BAT, BAT | BAT |
| CE | Control |
| EN2, EN1 | Control |
| PGOOD, CHG | Status |
| VSS, EP | Ground |
| OUT, OUT | OUT |
| ILIM, ISET, TMR | Charge_Program |
| IN | Power |
| SYSOFF | Control |
SYSOFF. The datasheet shows TD on pin 15 only for the bq24072, not for the bq24075Welcome 👋
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