RT4805A Synchronous Boost Regulator

Richtek's RT4805A synchronous boost regulator is designed to provide a minimum output voltage from a single-cell Li-Ion battery

Image of Richtek's RT4805A Synchronous Boost RegulatorRichtek's RT4805A 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.

Features
  • Input voltage range: 1.8 V to 5 V
  • Output range from 2.85 V to 4.4 V
  • Up to 96% efficient
  • Maximum continuous load current: 2 A at VIN > 2.65 V boosting VOUT to 3.35 V
  • Internal synchronous rectifier
  • True load disconnect when shut down
  • True bypass operation when VIN > target VOUT
  • Forced bypass mode
  • VSEL control to optimize target VOUT
  • Short-circuit protection
  • I2C controlled interface
  • Ultra-low operating quiescent current
Applications  
  • Single-cell Li-Ion, LiFePO4 batteries in smartphone or tablets
 
  • 2.5 G / 3 G / 4 G mini-module data cards

Synchronous Boost Regulator

ImageManufacturer Part NumberDescriptionVoltage - Input (Min)Voltage - Input (Max)Voltage - Output (Min/Fixed)Available QuantityView Details
IC REG BOOST ADJ 2A SYNC 16WLCSPRT4805AWSCIC REG BOOST ADJ 2A SYNC 16WLCSP1.8V5V2.85V1437 - ImmediateView Details
Published: 2017-01-11