BQ24001 Datasheet | Texas Instruments

.ti. bq24001 bq24002 bq24003 SLUS462E - SEPTEMBER 2000 - REVISED NOVEMBER 2004 SINGLEĆCELL LiĆION CHARGE MANAGEMENT IC FOR PDAs AND INTERNET APPLIANCES Features D Highly Integrated Solution With FET Pass Transistor and Reverse-Blocking Schottky and Thermal Protection D Integrated Voltage and Current Regulation With Programmable Charge Current D High-Accuracy Voltage Regulation (±1%) D Ideal for Low-Dropout Linear Charger Designs for Single-Cell Li-Ion Packs With Coke or Graphite Anodes D Up to 1.2-A Continuous Charge Current D Safety-Charge Timer During Preconditioning and Fast Charge D Integrated Cell Conditioning for Reviving Deeply Discharged Cells and Minimizing Heat Dissipation During Initial Stage of Charge D Optional Temperature or Input-Power Monitoring Before and During Charge D Various Charge-Status Output Options for Driving Single, Double, or Bicolor LEDs or Host-Processor Interface D Charge Termination by Minimum Current and Time D Low-Power Sleep Mode D Packaging: 5 mm × 5 mm MLP or 20-Lead TSSOP PowerPAD APPLICATIONS D PDAs D Internet Appliances D MP3 Players D Digital Cameras DESCRIPTION The bq2400x series ICs are advanced Li-Ion linear charge management devices for highly integrated and space-limited applications. They bine highaccuracy current and voltage regulation; FET passtransistor and reverse-blocking Schottky; battery conditioning, temperature, or input-power monitoring; charge termination; charge-status indication; and charge timer in a small package. The bq2400x measures battery temperature using an external thermistor. For safety reasons, the bq2400x inhibits charge until the battery temperature is within the user-defined thresholds. Alternatively, the user can monitor the input voltage to qualify charge. The bq2400x series...