RT9455 Description
The RT9455 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for portable applications. It integrates a synchronous PWM controller, power MOSFETs, input current sensing, high accuracy voltage regulation and charge termination circuits.
RT9455 Key Features
- Support Quick Start for Charger
- High Accuracy Voltage/Current Regulation
- Input Current Regulation : 100mA/500mA/700mA/
- Minimum Input Voltage Regulation : 4V/4.25V/4.5V
- Charge Current Regulation Accuracy : ±5%
- Built-In Input Current Sensing and Limiting
- Integrated Power MOSFETS for up to 1.55A Charge
- Integrated Sensing Resistors for Charging Current
- Synchronous 1.5MHz Fixed Frequency PWM
- Reverse Leakage Protection to Prevent Battery
RT9455 Applications
- Support Quick Start for Charger