RT9470G中文资料立锜科技数据手册PDF规格书

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)