Product Description:

FT92051B/92071B/92101B provide multi-faceted protection and equalization management for 3-5/6-7/8-10 cells series-connected lithium battery packs (cells) respectively. The chip samples voltage, current and temperature, and can be flexibly protected through the configuration of the upper computer, which can eliminate the limitation of a single material number. The internal equalization current of the chip is 10mA, and it can be expanded externally for high-current equalization. Chip load detection, charger detection without adding peripheral devices. Externally controlled lockout mode reduces power consumption to 2µA, minimizing the loss of battery cells during transportation or storage, and simultaneously disabling the charge/discharge function for improved safety. High-voltage pin withstanding up to 74V provides ample voltage margin.

Product Features:

VCC, VCN pin voltage withstanding 74V

CHG, LSNS, CSNS withstand -70V for VCC.

Reverse and miswired battery withstand

Equalization: Internal 10mA, external control also possible

Battery disconnection detection

Load detection, charger detection

Low power lockout mode

Over-discharge lockout mode

Low-side charging and discharging NMOS driver

Over-voltage and under-voltage protection and recovery: ±15mV

Two-stage discharge overcurrent protection: 1 → 10 (±mV)

Charging overcurrent protection: 1 → 2 (±mV)

Discharge short-circuit protection: ±10%