JAJSQM6B June 2023 – February 2024 BQ25622E
PRODUCTION DATA
The BQ25622E uses the Narrow VDC architecture (NVDC) with BATFET separating system from battery. The minimum system voltage is set by VSYSMIN register setting. Even with a fully depleted battery, the system is regulated to the minimum system voltage. If charging is enabled, the BATFET operates in linear mode (LDO mode). The default minimum system voltage at POR is 3.52 V.
As the battery voltage rises above the minimum system voltage, the BATFET is turned fully on. When battery charging is disabled and VBAT is above the minimum system voltage setting, or charging is terminated, the system is regulated 50 mV (typical) above battery voltage.