ZHCSJL4A February 2019 – March 2019 BQ25883
PRODUCTION DATA.
After input source is qualified, the charger device runs input source type detection.
The BQ25883 follows the USB Battery Charging Specification 1.2 (BC1.2) to detect input source (SDP/CDP/DCP) and non-standard adapter through USB D+/D- lines. After input source type detection, the following registers and pins are changed:
After detection is completed, the host can over-write IINDPM or VINDPM registers to change the input current, or input voltage limit if needed. The charger input current is always limited by the lower of IINDPM register , ILIM pin, or Input Current Optimizer (ICO) setting when ICO is enabled.
When AUTO_INDET_EN is disabled, the Input Source Type Detection is bypassed, and the Input Current Limit (IINDPM) register remains unchanged from previous value. When EN_VINDPM_RST is disabled, the Input Voltage Limit (VINDPM) register remains unchanged from previous value.