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BQ77908A - Multi-Cell Lithium-Ion/Polymer Precision Protector

Description

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.

Features

  • 4-, 5-, 6-, 7-, or 8-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 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 1.
  • 38-Pin TSSOP Package.
  • Internal 50-mA Aut.

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq77908A SLUSAV5A – FEBRUARY 2012 – REVISED OCTOBER 2014 bq77908A Multi-Cell Lithium-Ion/Polymer Precision Protector Not Recommended for New Designs 1 Features • 4-, 5-, 6-, 7-, or 8-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 40 V • Integrated 3.
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