The BQ2962 is a high precision, low power overvoltage protector with 2 mA regulated output power for Li-Ion battery pack applications.

The cells in the Series 2 to 4 battery packs are individually monitored for overvoltage conditions. Starts an internal fixed delay timer when an overvoltage condition on the battery is detected. When the delay timer expires, the output pin is triggered into an active state to indicate that an overvoltage condition has occurred.

The regulated output power supply provides up to 2 mA (max) output current to drive normally-on circuits such as real-time clock (RTC) oscillators. The BQ2962 device features a self-disable feature that turns off the regulated output when the battery voltage falls below a certain threshold. This prevents battery drain and provides external control to enable or disable the regulated output.

feature

2 series, 3 series and 4 series battery OVP

Fixed delay timer for triggering FET drive outputs (3-s, 4-s, 5.5-s and 6.5-s options)

Factory programmed OVP threshold (threshold range: 3.85 V to 4.6 V)

Output Options: Active High

High precision OVP: ±10 mV

Small package size: 2 mm x 2 mm 8-pin WSON

Regulate power output via self-disable and/or external enable/disable control:

Options: 3.3 V, 3.15 V and 3.0 V.

Low power IC: 4μA (V CELL(ALL)

Ultra-low power IC with reg output disabled: 1.2µA

Low leakage current per cell input: <100 nA

application

laptop

ultrabook

medical

UPS battery backup

BQ40Z50EVM-561