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BQ24382 Datasheet(PDF) 1 Page - Texas Instruments |
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BQ24382 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 18 page 1 FEATURES DESCRIPTION APPLICATIONS APPLICATION SCHEMATIC 1 8 VDC GND 1 F m IN OUT VBAT bq24380 1 F m Charging Circuit 6 SYSTEM AC Adapter 2 VSS bq24380 bq24381 bq24382 www.ti.com......................................................................................................................................................... SLUS805B – APRIL 2008 – REVISED MARCH 2009 Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode 2 • Input Overvoltage Protection The bq2438x family are charger front-end integrated circuits designed to provide protection to Li-ion • Accurate Battery Overvoltage Protection batteries from failures of the charging circuitry. The IC • Output Short-Circuit Protection continuously monitors the input voltage and the • Soft-Start to Prevent Inrush Currents battery voltage. The device operates like a linear • Soft-Stop to Prevent Voltage Spikes regulator, maintaining a 5.5-V (bq24380) or 5-V (bq24381, bq24382) output with input voltages up to • 30-V Maximum Input Voltage the Input overvoltage threshold. During input • Supports up to 1.7-A Load Current overvoltage conditions, the IC immediately turns off • Thermal Shutdown the internal pass FET disconnecting the charging circuitry from the damaging input source. Additionally, • Enable Function if the battery voltage rises to unsafe levels while • Fault Status Indication charging, power is removed from the system. The IC • Small 2 mm × 2 mm 8-Pin SON Package checks for short-circuit or overload conditions at its output when turning the pass FET on, and if it finds unsafe conditions, it switches off, and then rechecks the conditions. Additionally, the IC also monitors its • Smart Phones, Mobile Phones die temperature and switches off if it exceeds 140°C. • PDAs When the IC is controlled by a processor, the IC • MP3 Players provides status information about fault conditions to • Low-Power Handheld Devices the host. 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 © 2008–2009, 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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