RT4803A - Richtek Technology

RT4803A Synchronous Boost Regulator

The RT4803A 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 c.

Features

 Input Voltage Range : 1.8V to 5V
 Programmable Output Voltage from 2.85V to 4.4V with 50mV/Step
 Default Boost Output Voltage Setting :  VOUT = 3.4V at VSEL = H  VOUT = 3.15V at VSEL = L
 Maximum Continuous Load Current : 2A at VIN > 2.65V Boosting VOUT to 3.35V
 Up to 95% Efficiency
 nBYP (L) : Forced Bypass Mode
 nBYP (H) : Auto Bypass Operation when VIN > Target VOUT
 Internal Synchronous Rectifier
 Over-Current Protection
 Under-Voltage Protection
 Over-Voltage Protection
 Over-Temperature Protection
 Ultra Low Operating Quiescent Current
 Discharge Function Trigger at GPI.