BQ77915 Description
The BQ77915 device is a low-power battery pack protector that implements a suite of voltage, current, and temperature protections and a smart cell balancing algorithm without microcontroller (MCU) control. The device's stackable interface provides simple scaling to support battery cell applications from 3 series to 20 series or more. Protection thresholds and delays are factory-programmed and available in a variety...
BQ77915 Key Features
- Ultra-low quiescent current: 8 µA typ. (NORMAL mode), 2 µA (HIBERNATE mode)
- Full suite of voltage, current, and temperature protections
- Smart passive cell balancing removes cell-to-cell imbalance
- Scalable cell count from 3 series to 20 series or more
- Voltage protection (accuracy ±10 mV for OV, ±18 mV for UV)
- Overvoltage: 3 V to 4.575 V
- Undervoltage: 1.2 V to 3 V
- Open cell and open-wire detection (OW)
- Current protection
- Overcurrent discharge 1: -10 mV to -85 mV