LP3918 - 电池充电管理和稳压器单元

LP3918是TI德州仪器公司的一款无产品，LP3918是电池充电管理和稳压器单元，本站介绍了LP3918的封装应用图解、特点和优点、功能等，并给出了与LP3918相关的TI元器件型号供参考。

LP3918 - 电池充电管理和稳压器单元 - 无 - 电源管理多通道IC(PMIC)解决方案 - 德州仪器

产品描述

The LP3918 is a fully integrated charger and multi-regulator unit designed for CDMA cellular phones. The LP3918 contains a Li-Ion battery charger, 7 low noise low dropout (LDO) voltage regulators and a high-speed serial interface to program on/off conditions and output voltages of individual regulators, and also to read status information from the PMU.

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.

产品特性

Fully Integrated Li-Ion Battery Charger with Thermal Regulation
USB Charge Mode
7 Low Noise LDO’s
- 2 x 300 mA
- 3 x 150 mA
- 2 x 80 mA
I2C Compatible Interface for Controlling LDO Outputs and Charger Operation
Thermal Shutdown
Under Voltage Lockout
25-Bump Thin DSBGA Package 2.5 x 2.5 mm
Options Available on Request, Please Contact Sales Office for Further Information;
- Level Detect on HF_PWR & PWR_ON
- LDO Charging Mode
- Custom Default Settings on Charger, and LDO O/P's.

Key Specifications

50mA to 950mA Programmable Charge Current
3.0V to 5.5V Input Voltage Range
200mV Typ. Dropout Voltage on 300 mA LDO’s
2% (Typ) Output Voltage Accuracy on LDO’s

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