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bq24072RGTR Datasheet(PDF) 1 Page - Texas Instruments |
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bq24072RGTR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 39 page 1 FEATURES DESCRIPTION APPLICATIONS IN VSS BAT bq24075 bq24079 OUT EN 2 TS TEMP PACK+ PACK- SYSTEM SYSOFF System ON/OFF Control IN 13 8 15 1 2 3 5 10 11 1 F m 4.7 F m 4.7 F m 1.13kW 1.18kW 1kW 1kW bq24072, bq24073 bq24074, bq24075, bq24079 www.ti.com................................................................................................................................................. SLUS810D – SEPTEMBER 2008 – REVISED JUNE 2009 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC • Fully Compliant USB Charger – Selectable 100mA and 500mA Maximum The bq2407x series of devices are integrated Li-ion linear chargers and system power path management Input Current devices targeted at space-limited portable – 100mA Maximum Current Limit Ensures applications. The devices operate from either a USB Compliance to USB-IF Standard port or AC adapter and support charge currents up to – Input based Dynamic Power Management 1.5A. The input voltage range with input overvoltage (VIN-DPM) for Protection Against Poor USB protection supports unregulated adapters. The USB Sources input current limit accuracy and start up sequence allow the bq2407x to meet USB-IF inrush current • 28V Input Rating with Overvoltage Protection specification. Additionally, the input dynamic power • Integrated Dynamic Power Path Management management (VIN-DPM) prevents the charger from (DPPM) Function Simultaneously and crashing incorrectly configured USB sources. Independently Powers the System and The bq2407x features dynamic power path Charges the Battery management (DPPM) that powers the system while • Supports up to 1.5A Charge Current with simultaneously and independently charging the Current Monitoring Output (ISET) battery. The DPPM circuit reduces the charge current when the input current limit causes the system output • Programmable Input Current Limit up to 1.5A to fall to the DPPM threshold; thus, supplying the for Wall Adapters system load at all times while monitoring the charge • System Output Tracks Battery Voltage current separately. This feature reduces the number (bq24072) of charge and discharge cycles on the battery, allows • Programmable Termination Current (bq24074) for proper charge termination and enables the system to run with a defective or absent battery pack. • Battery Disconnect Function with SYSOFF Input (bq24075, bq24079) Typical Application Circuit • Programmable Pre-Charge and Fast-Charge Safety Timers • Reverse Current, Short-Circuit and Thermal Protection • NTC Thermistor Input • Proprietary Start Up Sequence Limits Inrush Current • Status Indication – Charging/Done, Power Good • Small 3 mm × 3 mm 16 Lead QFN Package • Smart Phones • Portable Media Players • Portable Navigation Devices • Low-Power Handheld Devices 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. 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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