RT4812

RT4812 High Efficiency Boost Converter General Description The RT4812 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 RT4812 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 2.1A. Quiescent current in Shutdown Mode is less than 1A, which maximizes battery life. Ordering Information RT4812 Package Type J8F : TSOT-23-8 (FC) Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. Features  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  Boost Current Limit  Output Over-Voltage Protection  Pin Adjustable Average Output Current Limit Threshold (2 Levels)  Internal Compensation  Output Discharge  Output Short Protection  True Load Disconnect Applic...