The RT9472/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 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.

应用

Smart Phone/Tablet PC

Personal Information Appliances

Portable Device and Accessory

关键特性

High Efficiency, 1.5MHz, Synchronous Switch-Mode Buck Charger

92% Charge Efficiency at 2A with 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)