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RT4812 - High Efficiency Boost Converter

Description

The RT4812 allows systems to take advantage of new battery chemistries that can supply significant energy even when the battery voltage is lower than the required voltage for system power ICs.

Features

  • CMCOT Topology with Small Output Ripple when VIN is close to VOUT Voltage.
  • Operate 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 Overvoltage Protection.
  • Pin-Adjustable Average Output Current-Limit Threshold (2 Levels).
  • Internal Compensation.
  • Output Discharge.
  • Output Short Protection.
  • True Load Disconnect 4.

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Datasheet preview – RT4812

Datasheet Details

Part number RT4812
Manufacturer Richtek Technology
File Size 736.36 KB
Description High Efficiency Boost Converter
Datasheet download datasheet RT4812 Datasheet
Additional preview pages of the RT4812 datasheet.

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Full PDF Text Transcription

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RT4812 High Efficiency Boost Converter 1 General Description The RT4812 allows systems to take advantage of new battery chemistries that can supply significant energy even 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 up to a maximum load current of 2.1A. Quiescent current in Shutdown Mode is less than 1A, which maximizes battery life.
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