The RT4813AGQUF allows systems to take advantage of new battery chemistries that can supply significant energy when the battery voltage is lower than the required voltage for system power ICs. By combining built-in power transistors, synchronous rectification, and low supply current; this IC provides a compact solution for systems using advanced Li-Ion battery chemistries. The RT4813AGQUF is a boost regulator designed to provide a minimum output voltage from a single-cell Li-Ion battery, even when the battery voltage is below system minimum. In boost mode, output voltage regulation is guaranteed to a maximum load current of 3.1A. Quiescent current in Shutdown Mode is less than 1μA, which maximizes battery life.
Feature
- CMCOT Topology and Small Output Ripple when VIN Close VOUT Voltage
- Operates from a Single Li-ion Cell : 1.8V to 5.5V
- Adjustable Output Voltage : 1.8V to 5.5V
- PSM Operation
- Up to 96% Efficiency
- Input Over Current Limit
- Input / Output Over Voltage Protection
- Programmable Average Output Current Limit Range : 3100mA to 550mA
- Internal Compensation
- Output Discharge
- Output Short Protection
- True Load Disconnect
Applications
- Single-Cell Li-Ion, LiFePO4 Smart-Phones
- Portable Equipment
