LP3921_TI 具有集成 Boomer 音频放大器的电池充电器管理和稳压器单元

LP3921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：具有集成 Boomer 音频放大器的电池充电器管理和稳压器单元
点击这里打开及下载LP3921的技术文档资料
TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格

LP3921的产品详情：

The LP3921 is a fully integrated charger and multi-regulator unit with a fully differential Boomer audio power amplifier designed for CDMA cellular phones. The LP3921 has a high-speed serial interface which allows for the integration and control of a Li-Ion battery charger, 7 low-noise low-dropout (LDO) voltage regulators and a Boomer audio amplifier.

The Li-Ion charger integrates a power FET, reverse current blocking diode, sense resistor with current monitor output, and requires only a few external components. Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature.

LDO regulators provide high PSRR and low noise ideally suited for supplying power to both analog and digital loads.

The Boomer Audio Amplifier is capable of delivering 1.1 watts of continuous average power to an 8? BTL load with less than 1% distortion (THD+N). Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The Boomer Audio Amplifier does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption and part count is the primary requirement. The Boomer Audio Amplifier contains advanced pop & click circuitry which eliminates noises during turn-on and turn-off transitions.

LP3921的优势和特性：

Charger
- DC Adapter or USB Input
- Thermally Regulated Charge Current
- Under Voltage Lockout
- 50 to 950 mA Programmable Charge Current
3.0V to 5.5V Input Voltage Range
Thermal Shutdown
I2C-Compatible Interface for Controlling Charger, LDO Outputs and Enabling Audio Output
LDO's 7 Low-Noise LDO’s
- 2 x 300 mA
- 3 x 150 mA
- 2 x 80 mA
2% (typ.) Output Voltage Accuracy on LDO's
Audio
- Fully Differential Amplification
- Ability to Drive Capacitive Loads up to 100 pF
- No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
Space-Efficient 32-pin 5 x 5 mm WQFN Package

All trademarks are the property of their respective owners.

LP3921的参数（英文）：

Regulated outputs (#)
7
Vin (Min) (V)
3
Vin (Max) (V)
5.5
Iout (Max) (A)
0.3
Rating
Catalog
LDO
7
Iq (Typ) (mA)
2
Features
Comm Control
Configurability
Hardware configurable, Software configurable

LP3921具体的完整产品型号参数及价格（美元）：

LP3921的完整型号有：LP3921SQE/NOPB、LP3921SQ/NOPB、LP3921SQX/NOPB，以下是这些产品的关键参数及官网采购报价：

LP3921SQE/NOPB，工作温度：-40 to 85，封装：WQFN (RTV)-32，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LP3921SQE/NOPB的批量USD价格：1.141（1000+）

LP3921SQ/NOPB，工作温度：-40 to 85，封装：WQFN (RTV)-32，包装数量MPQ：1000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LP3921SQ/NOPB的批量USD价格：1.284（1000+）

LP3921SQX/NOPB，工作温度：-40 to 85，封装：WQFN (RTV)-32，包装数量MPQ：4500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LP3921SQX/NOPB的批量USD价格：1.094（1000+）

LP3921的评估套件：

LP3921的电路图解：

LP3921的评估套件：