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ISL94200 - Multi-Cell Li-ion Battery Pack OCP/Analog Front-End

General Description

SYMBOL VC7/VCC VCELLN VSS DSREF DESCRIPTION Battery cell 7 voltage input/VCC supply.

This pin is used to monitor the voltage of this battery cell externally at pin AO.

This pin also provides the operating voltage for the IC circuitry.

Key Features

  • Software Selectable Overcurrent Protection Levels and Variable Protect Detection Times - 4 Discharge Overcurrent Thresholds - 4 Short Crcuit Thresholds - 4 Charge Overcurrent Thresholds - 8 Overcurrent Delay Times (Charge) - 8 Overcurrent Delay Times (Discharge) - 2 Short Circuit Delay Times (Discharge).
  • Automatic FET Turn-Off On Reaching External (Battery) or Internal (IC) Temperature Limit.
  • Fast Short Circuit Pack Shutdown.
  • Can Use Current Sense Resistor, F.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® ISL94200 Data Sheet July 3, 2008 FN6718.0 Multi-Cell Li-ion Battery Pack OCP/Analog Front-End The ISL94200 is an overcurrent protection device and analog front end for a microcontroller in a multi-cell Li-ion battery pack. The ISL94200 supports battery pack configurations consisting of 4-cells to 7-cells in series and 1 or more cells in parallel. The ISL94200 provides integral overcurrent protection circuitry, short circuit protection, an internal 3.3V voltage regulator, cell voltage monitor level shifters, and drive circuitry for external FET devices for control of pack charge and discharge. Selectable overcurrent and short circuit thresholds reside in internal RAM registers. An external microcontroller sets the thresholds by setting register values through an I2C serial interface.