RT9470D中文资料开关模式单节锂离子电池 3A 充电IC数据手册Richtek规格书

描述 Description

The RT9470/D is a highly-integrated 3A switch mode battery charge management and system power path management device for single cell Li-Ion and Li-Polymer batteries. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution. The recommended junction temperature range is -40°C to 150°C, and the ambient temperature range is -40°C to 85°C.

特性 Features

High Efficiency, 1.5MHz, Synchronous Switch-Mode Buck Charger- 92% Charge Efficiency at 2A from 5V Input and 3.8V Battery- Support 3.9V to 13.5V Input Voltage Range- Average Input Current Regulation (AICR)- Minimum Input Voltage Regulation (MIVR)- Minimum Input Voltage Regulation Track (MIVR Track)- Charge Current Regulation (CCR)- Charge Voltage Regulation (CVR)- Charge Voltage Regulation Track (CVR Track)- Junction Thermal Regulation (JTR)
Support USB On-The-Go (OTG)- 92% Boost Efficiency at 1A with 3.8V Battery and 5.15V Output- OTG Current Limit Regulation (OCLR) - OTG Voltage Limit Regulation (OVLR)
Protection - Over-Temperature Protection (OTP)- VBUS Overvoltage Protection (VBUS OVP)- Battery Overvoltage Protection (VBAT OVP)- System Overvoltage Protection (VSYS OVP)- System Undervoltage Protection (VSYS UVP)- System Over-Load Protection (VSYS OLP)- Cycle-by-Cycle Overcurrent Protection (OCP)- OTG Low Battery Protection (OTG LBP)

应用 Application

• Smart Phone/Tablet PC
•Portable Device and Accessory