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RT4803A - Synchronous Boost Regulator

Description

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.

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-Vo.

📥 Download Datasheet

Datasheet preview – RT4803A

Datasheet Details

Part number RT4803A
Manufacturer Richtek Technology
File Size 3.14 MB
Description Synchronous Boost Regulator
Datasheet download datasheet RT4803A Datasheet
Additional preview pages of the RT4803A datasheet.

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Full PDF Text Transcription

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RT4803A 2.5MHz, Synchronous Boost Regulator General Description 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 chemistries. The RT4803A 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 2000mA. Quiescent current in shutdown mode is less than 1A, which maximizes battery life.
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