LP3910_TI 面向基于硬盘的便携式媒体播放器的电源管理 IC (PMIC)

LP3910的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：多通道 IC (PMIC)
功能描述：面向基于硬盘的便携式媒体播放器的电源管理 IC (PMIC)
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LP3910的产品详情：

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.

For all available packages, see the orderable addendum at the end of the data sheet.

LP3910的优势和特性：

Two Low-Dropout Regulators With Programmable Output Voltages:
- 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

LP3910的参数（英文）：

Regulated outputs (#)
4
Vin (Min) (V)
2.5
Vin (Max) (V)
6
Iout (Max) (A)
1
Rating
Catalog
LDO
2
Iq (Typ) (mA)
0.03
Features
Comm Control, Enable, Power Sequencing
Shutdown current (ISD) (Typ) (uA)
30
Switching frequency (Typ) (kHz)
2000
Configurability
Factory programmable, Software configurable

LP3910具体的完整产品型号参数及价格（美元）：

LP3910的完整型号有：LP3910SQ-AK/NOPB、LP3910SQ-AN/NOPB、LP3910SQX-AA/NOPB、LP3910SQX-AN/NOPB、LP3910SQX-AP/NOPB，以下是这些产品的关键参数及官网采购报价：

LP3910SQ-AK/NOPB，工作温度：PropertyValue，封装：WQFN (NJV)-48，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3910SQ-AK/NOPB的批量USD价格：1.95（1000+）

LP3910SQ-AN/NOPB，工作温度：PropertyValue，封装：WQFN (NJV)-48，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3910SQ-AN/NOPB的批量USD价格：2.34（1000+）

LP3910SQX-AA/NOPB，工作温度：-40 to 85，封装：WQFN (NJV)-48，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3910SQX-AA/NOPB的批量USD价格：1.95（1000+）

LP3910SQX-AN/NOPB，工作温度：PropertyValue，封装：WQFN (NJV)-48，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3910SQX-AN/NOPB的批量USD价格：1.95（1000+）

LP3910SQX-AP/NOPB，工作温度：PropertyValue，封装：WQFN (NJV)-48，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3910SQX-AP/NOPB的批量USD价格：1.95（1000+）

LP3910的评估套件：

LP3910的电路图解：

LP3910的评估套件：