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BQ2000 Datasheet Programmable Multi-chemistry Fast-charge Management

Manufacturer: Texas Instruments

Overview: bq2000 www.ti.com SLUS138D – JANUARY 2008 – REVISED DECEMBER 2009 Programmable Multi-Chemistry Fast-Charge Management IC Check for Samples:.

General Description

The bq2000 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd), nickel metal-hydride (NiMH), or lithium-ion (Li-Ion) batteries in single- or multi-chemistry applications.

The bq2000 chooses the proper battery chemistry (either nickel or lithium) and proceeds with the optimal charging and termination algorithms.

This process eliminates undesirable, undercharged, or overcharged conditions, and allows accurate and safe termination of fast charge Depending on the chemistry, the bq2000 provides a number of charge termination criteria: • Peak voltage, PVD (for NiCd and NiMH) • Minimum charge current (for Li-Ion) • Maximum temperature • Maximum charge time For safety, the bq2000 inhibits fast charge until the battery voltage and temperature are within user-defined limits.

Key Features

  • 1.
  • Safe Management of Fast Charge for NiCd, NiMH, or Li-Ion Battery Packs.
  • High-Frequency Switching Controller for Efficient and Simple Charger Design.
  • Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells.
  • Fast-Charge Termination by Peak Voltage (PVD) for Nickel chemistries, Minimum Current for Li-Ion chemistries, Maximum Temperature, and Maximum Charge Time.
  • Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batter.

BQ2000 Distributor

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