RT9470G中文資料RichTek數(shù)據(jù)手冊PDF規(guī)格書

1 General Description

The RT9470G device are a highly-integrated 3A

switch mode battery charge management and system

power path management device for single cell Li-Ion

and Li-polymer battery. 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 125?C, and the ambient temperature range

is ?40?C to 85?C.

2 Applications

? Smart Phone/Tablet PC

? Personal Information Appliances

? Portable Device and Accessory

4 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)

? Supports 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)