BQ77910A - Texas Instruments

BQ77910A Multi-Cell Lithium-Ion/Polymer Precision Protector

The bq77910A is a battery protection and cell balancing device intended for Li-Ion and Li-Polymer battery packs. The bq77910A monitors 4- to 10-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 program.

Features

• 4-, 5-, 6-, 7-, 8-, 9-, or 10-Series Cell Protection
• Individual Cell-Voltage Monitoring
• Low-Side NMOS FET Drive for Charge and Discharge Control
• Compatible With 1-mΩ Current-Sense Resistor
• Supply-Voltage Range From 5.6 V to 50 V
• Integrated 3.3-V Micro-Power LDO Regulator
• Low Supply Current
  – Normal Mode: 50 µA, Typical
  – Shutdown Mode, LDO OFF: 3 µA, Typical 1
• 38-Pin TSSOP Package
• Internal 50-mA Automatic Cell Balancing 2 Applications
• Cordless Power Tools
• Cordless Lawn Equipment
• Electric Bikes
• UPS
• Light Electric Vehicles (LEV) 3 Description The bq77910A is a batte.