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MAX1666A - Advanced Lithium-Ion Battery-Pack Protector

Description

The MAX1666 provides complete protection against overvoltage, undervoltage, overcharge current, overdischarge current, and cell mismatch for 2-cell to 4-cell lithium-ion (Li+) battery packs.

Features

  • Overvoltage Protection Programmable Limits from +4.0V to +4.4V Accurate to ±0.5%.
  • Undervoltage Protection Programmable Limits from +2.0V to +3.0V Accurate to ±2.5%.
  • Cell Mismatch Protection Programmable Limits from 0 to 500mV Accurate to ±10%.
  • Overcharge Current Protection.
  • Overdischarge Current Protection.
  • Low 30µA (typ) Operating Supply Current.
  • Low 1µA (max) Standby Current.
  • +28V (max) Input Voltage.
  • Available i.

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Full PDF Text Transcription

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www.DataSheet4U.com 19-1465; Rev 2; 12/03 Advanced Lithium-Ion Battery-Pack Protector General Description The MAX1666 provides complete protection against overvoltage, undervoltage, overcharge current, overdischarge current, and cell mismatch for 2-cell to 4-cell lithium-ion (Li+) battery packs. The voltage of each cell in the battery pack is checked and compared to the programmable threshold and to the other cells in the pack. The MAX1666 protects the battery pack in an overcurrent condition by disconnecting the pack from the load at a programmable limit. On-chip power MOSFET drivers control external P-channel MOSFETs to disconnect the cells from external terminals when faults occur.
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