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BQ24250YFFT Datasheet(PDF) 1 Page - Texas Instruments |
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BQ24250YFFT Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 49 page  bq24250 bq24251 bq24253 www.ti.com SLUSBA1C – OCTOBER 2012 – REVISED JUNE 2013 2A Single Input I2C, Standalone Switch-Mode Li-Ion Battery Charger with Power-Path Management Check for Samples: bq24250, bq24251, bq24253 1 FEATURES 23 • High-efficiency Switch-mode Charger with • Complete System Level Protection Separate Power Path – Input UVLO, Input Over-voltage Protection • Start up System from Deeply Discharged or (OVP), Battery OVP, Sleep Mode, VIN_DPM Missing Battery – Input Current Limit • USB Charging Compliant – Charge Current Limit – Selectable Input Current Limit of 100 mA, – Thermal Regulation 500 mA, 900 mA, 1.5 A, and 2 A – Thermal Shutdown • BC1.2 Compatible D+, D– Detection – Voltage Based, JEITA Compatible NTC • In Host Mode (after I2C communication starts Monitoring Input and before watchdog timer times out) – Safety Timer – Programmable Battery Charge Voltage, • 20 V Maximum Input Voltage Rating VBATREG • 10.5 V Maximum Operating Input Voltage – Programmable Charge Current (ICHG) • Low RDS(on) Integrated Power FETs for up to 2 – Programmable Input Current Limit (ILIM) A Charging Rate – Programmable Input Voltage Based • Open Drain Status Outputs Dynamic Power Management threshold, • Synchronous Fixed-frequency PWM Controller (VIN_DPM) Operating at 3MHz for Small Inductor Support – Programmable Input Overvoltage • AnyBoot Robust Battery Detection Algorithm Protection Threshold (VOVP) • Charge Time Optimizer for improved charge – Programmable Safety Timer times at any given charge current • Resistor Programmable Defaults for: • 2.4 x 2.0 mm 30-ball WCSP Package – ICHG up to 2 A with Current Monitoring Output (ISET) APPLICATIONS – ILIM up to 2 A with Current Monitoring • Mobile Phones and Smart Phones Output (ILIM) • MP3 Players – VIN_DPM (VDPM) • Portable Media Players • Watchdog Timer Disable Bit • Handheld Devices • Integrated 4.9 V, 50 mA LDO DESCRIPTION The bq24250, 1, 3 is a highly integrated single-cell Li-Ion battery charger and system power-path management device targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates from either a USB port or AC wall adapter for a versatile solution. The power path management feature allows the bq24250, 1, 3 to power the system from a high efficiency DC/DC converter while simultaneously and independently charging the battery. The charger monitors the battery current at all times and reduces the charge current when the system load requires current above the input current limit. This allows for proper charge termination and enables the system to run with a defective or absent battery pack. Additionally, this enables instant system turn-on even with a totally discharged battery or no battery. The power- path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents. This enables the use of a smaller adapter. 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 NanoFree is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2012–2013, 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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