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BQ24005PWPRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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BQ24005PWPRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page bq24004 bq24005 bq24006 www.ti.com SLUS476F – DECEMBER 2000 – REVISED MAY 2012 TWO-CELL Li-ION CHARGE MANAGEMENT IC FOR PDAs AND INTERNET APPLIANCES Check for Samples: bq24004, bq24005, bq24006 1 FEATURES DESCRIPTION 2 • Highly Integrated Solution With FET Pass The bq2400x series ICs are advanced Li-Ion linear Transistor and Reverse-Blocking Schottky and charge management devices for highly integrated and Thermal Protection space-limited applications. They combine high- • Integrated Voltage and Current Regulation accuracy current and voltage regulation; FET pass- With Programmable Charge Current transistor and reverse-blocking Schottky; battery conditioning, temperature, or input-power monitoring; • High-Accuracy Voltage Regulation (±1%) charge termination; charge-status indication; and • Ideal for Low-Dropout Linear Charger Designs charge timer in a small package. for Two-Cell Li-Ion Packs With Coke or Graphite Anodes The bq2400x measures battery temperature using an external thermistor. For safety, the bq2400x inhibits • Up to 1.2-A Continuous Charge Current charge until the battery temperature is within the • Safety-Charge Timer During Preconditioning user-defined thresholds. Alternatively, the user can and Fast Charge monitor the input voltage to qualify charge. The bq2400x series then charge the battery in three • Integrated Cell Conditioning for Reviving phases: preconditioning, constant current, and Deeply Discharged Cells and Minimizing Heat constant voltage. If the battery voltage is below the Dissipation During Initial Stage of Charge internal low-voltage threshold, the bq2400x uses low- • Optional Temperature or Input-Power current precharge to condition the battery. A Monitoring Before and During Charge preconditioning timer provides additional safety. • Various Charge-Status Output Options for Following pre- conditioning, the bq2400x applies a Driving Single, Double, or Bicolor LEDs or constant-charge current to the battery. An external sense-resistor sets the magnitude of the current. The Host-Processor Interface constant-current phase is maintained until the battery • Charge Termination by Minimum Current and reaches the charge-regulation voltage. The bq2400x Time then transitions to the constant voltage phase. The • Low-Power Sleep Mode user can configure the device for cells with either coke or graphite anodes. The accuracy of the voltage • Packaging: 20-Lead TSSOP PowerPAD™ regulation is better than ±1% over the operating junction temperature and supply voltage range. APPLICATIONS Charge is terminated by maximum time or minimum • PDAs taper current detection • Internet Appliances The bq2400x automatically restarts the charge if the • MP3 Players battery voltage falls below an internal recharge • Digital Cameras threshold. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2000–2012, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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