SLUSFD7 April 2024 BQ25308
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
When VBATREG is set to 3.6V (for LiFePO4 batteries), the device charges the battery in four phases: trickle charge, preconditioning, constant current, constant voltage. The device charges the battery based on charge voltage set by the VSET pin and charge current set by the ICHG pin as well as actual battery voltage. Refer to Figure 8-2for the battery charging profile when VBATREG = 3.6V.
MODE | BATTERY VOLTAGE VBAT | CHARGE CURRENT | TYPICAL VALUE |
---|---|---|---|
Battery Short | VBAT < VBAT_SHORT | Charge Inhibited | -1.5uA |
Trickle Charge | VBAT_SHORT < VBAT < VBAT_TRICKLE | IBAT_TRICKLE | 35 mA |
Precharge | VBAT_TRICKLE < VBAT < VBAT_LOWV | IPRECHG | 10% of ICHG ( IPRE > 63mA ) |
Fast Charge | VBAT_LOWV < VBAT | ICHG | Set by ICHG resistor |