RT4812
High Efficiency Boost Converter
General Description
The RT4812 allows systems to take advantage of new battery ...
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 1A, 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...