Product Description:

FT92161B/92181B provide multi-faceted protection and equalization management for 11-16/11-18 cell series-connected lithium battery packs (cells) respectively. The chip samples voltage, current and temperature, and is configured through the host computer for flexible protection, which can eliminate the limitations of a single material number. The internal equalization current of the chip is 20mA, 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 also disables the charge/discharge function to improve safety. High-voltage pin withstanding up to 120V provides ample voltage margin.

Product Features:

VCC, VCN, LSNS, CSNS pin voltage withstanding 120V.

CHG to VCC withstanding -120V

Reversed and miswired battery withstand

Equalization: Internal 20mA, 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%