SLUSFR7 August 2025 BQ24810
PRODUCTION DATA
請(qǐng)參考 PDF 數(shù)據(jù)表獲取器件具體的封裝圖。
A battery LEARN cycle can be activated through the REG0x12[5]. When LEARN is enabled, the system draws power from the battery instead of the adapter by turning off ACFET/RBFET and turning on BATFET. The LEARN function allows the battery to discharge in order to calibrate the battery gas gauge over a complete discharge and charge cycle. The controller automatically exits the LEARN cycle when the battery voltage is below the battery depletion threshold as set in REG0x3B[15:14]. The system switches back to adapter input by turning off BATFET and turning on ACFET/RBFET. After the LEARN cycle, REG0x12[5] is automatically reset to 0.
When adapter is removed during LEARN mode, the charger exits LEARN mode by setting REG0x12[5] to 0. The battery FET keeps powering the system without any glitches. Later when adapter plugs in again, host has to set REG0x12[5] to 1 to enable LEARN mode again.
When the battery is removed during LEARN mode, BATPRES rises from low to high and the device exits LEARN mode. ACFET/RBFET quickly turns on in 100 μs to prevent the system from crashing. The turn-on triggered by BATPRES is faster than that triggered by battery depletion comparator.