General Description
The RT9470/D 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 150C, and the ambient temperature range is
−40C to 85C.

Applications
⚫ Smart Phone/Tablet PC
⚫ Personal Information Appliances
⚫ Portable Device and Accessory

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 Over-Voltage Protection (VBUS OVP)
 Battery Over-Voltage Protection (VBAT OVP)
 System Over-Voltage Protection (VSYS OVP)
 System Under-Voltage Protection (VSYS UVP)
 System Over-Load Protection (VSYS OLP)
 Cycle-by-Cycle Over-Current Protection (OCP)
 OTG Low Battery Protection (OTG LBP)