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ISL94201 - Multi-Cell Li-ion Battery Pack Analog Front-End

General Description

SYMBOL VC7/VCC VCELLN VSS AO TEMP3V 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

  • Four Battery-Backed Software Controlled Flags.
  • 10% Accurate 3.3V Voltage Regulator (Minimum 25mA Out With External NPN Transistor Having Current Gain of 70).
  • Monitored Cell Voltage Output Stable In 100µs.
  • Simple I2C Host Interface.
  • Sleep Operation With Programmable Negative Edge or Positive Edge Wake-Up.

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Full PDF Text Transcription for ISL94201 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for ISL94201. For precise diagrams, and layout, please refer to the original PDF.

® ISL94201 Data Sheet July 3, 2008 FN6719.0 Multi-Cell Li-ion Battery Pack Analog Front-End The ISL94201 is an analog front end for a microcontroller in a multi-cell Li-i...

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4201 is an analog front end for a microcontroller in a multi-cell Li-ion battery pack. The ISL94201 supports battery pack configurations consisting of 4-cells to 7-cells in series and 1 or more cells in parallel. The ISL94201 provides an internal 3.3V voltage regulator, and cell voltage monitor level shifters. Using an internal analog multiplexer the ISL94201 provides monitoring of each cell voltage plus internal and external temperature by a separate microcontroller with an A/D converter. Software on this microcontroller implements all battery pack control functionality. Features • Four Battery-Backed Software Controlled

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