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RT2859B - Synchronous Step-Down Converter

This page provides the datasheet information for the RT2859B, a member of the RT2859A Synchronous Step-Down Converter family.

Description

The RT2859A/B are high-performance 650kHz 3A step-down regulators with internal power switches and synchronous rectifiers.

Features

  • a power-saving discontinuous operating mode at light loads. The recommended junction temperature range is.
  • 40C to 125C and ambient temperature range is.
  • 40C to 85C. 2 Features.
  • Fast Transient Response.
  • Steady 650kHz Switching Frequency at all Load Current (RT2859B).
  • Discontinuous Operating Mode at Light Load (RT2859A).
  • 3A Output Current.
  • Advanced Constant On-Time (ACOT® Control.
  • Optimized for Ceramic Output Capacitors.
  • 4.5V to 18V Input Vol.

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Datasheet preview – RT2859B

Datasheet Details

Part number RT2859B
Manufacturer Richtek
File Size 1.34 MB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT2859B Datasheet
Additional preview pages of the RT2859B datasheet.

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Full PDF Text Transcription

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RT2859A/B 3A, 18V, 650kHz, ACOT® Synchronous Step-Down Converter 1 General Description The RT2859A/B are high-performance 650kHz 3A step-down regulators with internal power switches and synchronous rectifiers. They feature quick transient response using their Advanced Constant On-Time (ACOT® ) control architecture that provides stable operation with small ceramic output capacitors and without complicated external compensation, among other benefits. The input voltage range is from 4.5V to 18V and the output is adjustable from 0.765V to 7V. The proprietary ACOT® control improves upon other fast-response constant on-time architectures, achieving nearly constant switching frequency over line, load, and output voltage ranges.
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