LP3910SQX-AN/NOPB 供应商
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LP3910SQX-AN/NOPB
品牌：TI 封装/批号：原厂原装/22+ -
LP3910SQX-AN/NOPB
品牌：TI(德州仪器) 封装/批号：WQFN-48(6x6)/2022+
LP3910SQX-AN/NOPB 属性参数
- 制造商：National Semiconductor (TI)
- 封装：Reel
- 工厂包装数量：2500
产品特性
- Two Low-Dropout Regulators With Programmable Output Voltages: LDO1 for General Purpose Applications LDO2 for Low-Noise Analog Applications
- LDO1 for General Purpose Applications
- LDO2 for Low-Noise Analog Applications
- Green and Red LED-Charger Status Drivers
- 4-Channel 8-Bit Dual Slope Analog-to-Digital (ADC) Converter
- 2 High-Efficiency DVS Buck Converters
- Wide Load Range Buck-Boost DC-DC Converter
- 400-kHz I2C-Compatible Interface
- Linear Constant-Current and Constant-Voltage Charger for Single-Cell Lithium-Ion Batteries
- USB and Adapter Charging
- System Power Supply Management
- Voltage and Thermal Supervisory Circuits
- Continuous Battery Voltage Monitoring
- Interrupt Request Output With 8 Sources
- 50-mΩ Battery Path Resistance
- 100-mA to 1000-mA Full-Rate Charge Current Using Wall Adapter
- Selectable 0.05C and 0.1C End-of-Charge (EOC) Current
- USB Current Limits of 100, 500, and 800 mA
- USB Pre-Qualification Current of 50 mA
- Selectable 4.1-V, 4.2-V or 4.38-V Battery-Termination Voltages
- 0.35% Battery-Termination Accuracy
- ±1 LSB INL/DNL on 8-Bit ADC
产品概述
The LP3910 is a programmable system power management unit optimized for HDD-based
portable media players. The device incorporates two low-dropout LDO voltage regulators, two
integrated buck DC-DC converters with dynamic voltage scaling (DVS), one wide load-range buck-boost
DC-DC converter with programmable output voltage, a 4-channel, 8-bit ADC, and a dual-source
lithium-ion or lithium-polymer battery charger.The LP3910 also incorporates some advanced battery management functions such as battery
temperature measurement, reverse current blocking for USB, LED-charger status indication, thermally
regulated internal power FETs, battery-voltage monitoring, overcurrent protection, and a 10-hour
safety timer. The device is programmable through a 400-kHz I2C-compatible interface. The LP3910 is available in a thermally-enhanced
6-mm × 6-mm × 0.8-mm 48-pin WQFN package.
LP3910SQX-AN/NOPB 电路图
