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RT2853B - Synchronous Step-Down Converter

Download the RT2853B datasheet PDF. This datasheet also covers the RT2853A variant, as both devices belong to the same synchronous step-down converter family and are provided as variant models within a single manufacturer datasheet.

General Description

The RT2853A/B are high-performance 650kHz 3A step- down regulators with internal power switches and synchronous rectifiers.

Key Features

  • Fast Transient Response.
  • Steady 650kHz Switching Frequency.
  • Enhanced Efficiency at Light Load (RT2853A).
  • Advanced Constant On-Time (ACOT®) Control.
  • Optimized for Ceramic Output Capacitors.
  • 4.5V to 18V Input Voltage Range.
  • Internal 110m Switch and 30m Synchronous Rectifier.
  • 0.765V to 7V Adjustable Output Voltage.
  • Externally-adjustable, Pre-biased Compatible Soft- Start.
  • Cycle-by-Cycle Current Limit.
  • Optional Output Discharge Function.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (RT2853A-Richtek.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number RT2853B
Manufacturer Richtek
File Size 1.41 MB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT2853B Datasheet

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Other Datasheets by Richtek

Part Number Description
RT2853A Synchronous Step-Down Converter
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
RT2853A/B 3A, 18V, 650kHz, ACOT® Synchronous Step-Down Converter 1 General Description The RT2853A/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.