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LP3910 Datasheet(PDF) 1 Page - Texas Instruments |
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LP3910 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 72 page  USB Controller Battery Apps Processor Audio Touch HDD Memory LP3910 Buck-Boost LDO2 LDO1 Buck2 Buck1 Linear Charger ACDC Wall Adapter Battery Monitor Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LP3910 SNVS481M – NOVEMBER 2006 – REVISED DECEMBER 2015 LP3910 Power Management IC for Hard-Drive-Based Portable Media Players 1 Features 2 Applications 1 • Two Low-Dropout Regulators With Programmable • Hard Drive-Based Media Players Output Voltages: • Portable Gaming Players – LDO1 for General Purpose Applications • Portable Navigation Devices – LDO2 for Low-Noise Analog Applications 3 Description • Green and Red LED-Charger Status Drivers The LP3910 is a programmable system power • 4-Channel 8-Bit Dual Slope management unit optimized for HDD-based portable Analog-to-Digital (ADC) Converter media players. The device incorporates two low- • 2 High-Efficiency DVS Buck Converters dropout LDO voltage regulators, two integrated buck DC-DC converters with dynamic voltage scaling • Wide Load Range Buck-Boost DC-DC Converter (DVS), one wide load-range buck-boost DC-DC • 400-kHz I2C-Compatible Interface converter with programmable output voltage, a 4- • Linear Constant-Current and Constant-Voltage channel, 8-bit ADC, and a dual-source lithium-ion or Charger for Single-Cell Lithium-Ion Batteries lithium-polymer battery charger. • USB and Adapter Charging The LP3910 also incorporates some advanced • System Power Supply Management battery management functions such as battery temperature measurement, reverse current blocking • Voltage and Thermal Supervisory Circuits for USB, LED-charger status indication, thermally • Continuous Battery Voltage Monitoring regulated internal power FETs, battery-voltage • Interrupt Request Output With 8 Sources monitoring, overcurrent protection, and a 10-hour • 50-m Ω Battery Path Resistance safety timer. The device is programmable through a 400-kHz I2C-compatible interface. • 100-mA to 1000-mA Full-Rate Charge Current Using Wall Adapter The LP3910 is available in a thermally-enhanced 6-mm × 6-mm × 0.8-mm 48-pin WQFN package. • Selectable 0.05C and 0.1C End-of-Charge (EOC) Current Device Information(1) • USB Current Limits of 100, 500, and 800 mA PART NUMBER PACKAGE BODY SIZE (NOM) • USB Pre-Qualification Current of 50 mA LP3910 WQFN (48) 6.00 mm × 6.00 mm • Selectable 4.1-V, 4.2-V or 4.38-V Battery- (1) For all available packages, see the orderable addendum at Termination Voltages the end of the data sheet. • 0.35% Battery-Termination Accuracy • ±1 LSB INL/DNL on 8-Bit ADC Simplified Block Diagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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