JAJSSD2A October 2023 – December 2023 BQ25638
PRODUCTION DATA
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BQ25638 has a two-level battery overcurrent protection. The IBAT_PK threshold is set by IBAT_PK and provides a fast (100 μs) protection for the battery discharging. IBATFET_OCP provides a slower (50 ms), fixed-threshold protection for the BATFET. If the battery discharge current becomes higher than either threshold for its deglitch time, the BAT_FAULT_STAT and BAT_FAULT_FLAG fault register bits are set to 1, and the BATFET enters hiccup mode with 100ms off-time and ~1% on-time. The BAT_FAULT_STAT will return to 0 once the BATFET is disabled for the hiccup mode. Once the BATFET is turned back on, the IBAT_PK and IBATFET_OCP thresholds are re-evaluated with their respective deglitch times. In boost OTG mode, if the battery discharging current is higher than either IBAT_PK or IBATFET_OCP for their respective deglitch times, the charger exits OTG mode by clearing the EN_OTG bit.