BQ77904 Overview
Key Specifications
Package: TSSOP
Pins: 20
Max Voltage (typical range): 25 V
Min Voltage (typical range): 3 V
Description
The BQ77904 and BQ77905 devices are low-power battery pack protectors that implement a suite of voltage, current, and temperature protections 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.
Key Features
- NORMAL mode: 6 µA (BQ77904 and BQ77905)
- Full suite of voltage, current, and temperature protections
- Scalable cell count from 3 series to 20 series or more
- Voltage protection (accuracy ±10 mV) – Overvoltage: 3 V to 4.575 V – Undervoltage: 1.2 V to 3 V
- Open cell and open-wire detection (OW)
