Holtek Semiconductor HT7Q2552
The HT7Q2552 is a high voltage analog-front-end IC for 3 to 8 cell Li-ion rechargeable battery protection. It consists of a 5V high accuracy regulator, an accuracy 2.5V reference voltage output, an individual cell voltage monitor, two discharge paths, i.e., low-side power switch gate drivers, a charge path, i.e., high-side power switch gate driver, a charge/discharge differential current monitor, and a discharge short-current protection. The cell voltage monitor is designed to monitor each battery cell voltage individually and outputs the divide-by-2 voltage to the analog multiplexer with ±7.5mV accuracy.