BQ77908A Overview
The bq77908A is a battery protection and cell balancing device intended for Li-Ion and Li-Polymer battery packs. The bq77908A monitors 4- to 8-series individual cell voltages and provides fast-acting outputs that may be used to drive N-channel MOSFETs to interrupt the power path. Activation delays and recovery methods for safety conditions are fully programmable in non-volatile memory.
BQ77908A Key Features
- 4-, 5-, 6-, 7-, or 8-Series Cell Protection
- Individual Cell-Voltage Monitoring
- Low-Side NMOS FET Drive for Charge and
- patible With 1-mΩ Current-Sense Resistor
- Supply-Voltage Range From 5.6 V to 40 V
- Integrated 3.3-V Micro-Power LDO Regulator
- Low Supply Current
- Normal Mode: 50 µA, Typical
- Shutdown Mode, LDO OFF: 5 µA, Typical
- 38-Pin TSSOP Package