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RT5789B - Synchronous Step-Down Converter

This page provides the datasheet information for the RT5789B, a member of the RT5789A Synchronous Step-Down Converter family.

Datasheet Summary

Description

The RT5789A/B is a simple, easy-to-use, 6A synchronous step-down DC-DC converter with an input supply voltage range of 2.5V to 6V.

The device build-in an accurate 0.6V (±1.5%) reference voltage and can operate in 100% duty cycle as a very low dropout voltage regulator.

Features

  • 6A Converter With Built-In 18mΩ/16mΩ Low RDS(ON) Power FETs.
  • Input Supply Voltage Range : 2.5V to 6V.
  • Output Voltage Range : 0.6V to 6V.
  • Operates Up to 100% Duty Cycle.
  • Advanced Constant On-Time (ACOT®) Control  Ultrafast Transient Response  No Needs For External Compensations  Optimized for Low-ESR Ceramic Output Capacitors.
  • 0.6V ±1.5% High-Accuracy Feedback Reference Voltage.
  • 35μA Operation Quiescent Current (RT5789A).
  • Robust Over-Current Protecti.

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Datasheet preview – RT5789B

Datasheet Details

Part number RT5789B
Manufacturer Richtek
File Size 522.13 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT5789B Datasheet
Additional preview pages of the RT5789B datasheet.

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Full PDF Text Transcription

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® RT5789A/B 6V, 6A, 1.5MHz ACOT® Synchronous Step-Down Converter in 2.5mm x 2mm Package General Description The RT5789A/B is a simple, easy-to-use, 6A synchronous step-down DC-DC converter with an input supply voltage range of 2.5V to 6V. The device build-in an accurate 0.6V (±1.5%) reference voltage and can operate in 100% duty cycle as a very low dropout voltage regulator. the RT5789A/B integrates low RDS(ON) power MOSFETs to achieve high efficiency and is available in TSOT-23-8 (FC) package and UDFN-8L 2.5x2(FC) package. The RT5789A/B adopts Advanced Constant On-Time (ACOT®) control architecture to provide an ultrafast transient response with few external components and to operate in nearly constant switching frequency over the line, load, and output voltage range.
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