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Overview

Description

The RAA211230 is an integrated 24V, 3A synchronous buck regulator with current mode constant on-time (COT) control. The RAA211230 features comprehensive protection including input undervoltage lockout (UVLO), overcurrent protection (OCP), output undervoltage protection (OUVP), and over-temperature protection (OTP).

Features

  • 4.5V to 24V input supply range
  • Up to 3A output current
  • Integrated high-side (85mΩ) and low-side (45mΩ) MOSFETs
  • 400μA quiescent current
  • Minimum on-time of 60ns and minimum off-time of 275ns
  • 0.765V reference voltage with 2% accuracy
  • PFM mode under light load condition 
  • Current mode constant on-time (COT) control with internal compensation
  • Internal 0.8ms soft start time
  • Protection: low-side overcurrent (LSOC) limit, input undervoltage lockout (UVLO), over-temperature protection (OTP), output undervoltage protection (OUVP) with Hiccup mode
  • Accurate EN threshold 
  • 6-lead TSOT23 package

Comparison

Applications

  • General purpose
  • Industrial power supplies
  • Embedded systems and I/O supplies

Documentation

Type Title Date
Datasheet PDF 3.97 MB
1 item

Design & Development

Software & Tools

Software & Tools

Software title
Software type
Company
iSim:PE Offline Simulation Tool
iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs.
Simulator Renesas
1 item

Software Downloads

Type Title Date
Software & Tools - Other XLSX 286 KB
1 item

Boards & Kits

Models

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Diagram of ECAD Models

Videos & Training

Compact Buck Regulators with COT Control

Renesas’ RAA211230/320 family of synchronous buck regulators are integrated with current mode constant on-time (COT) control which enables fast transient response while shrinking the output filter size. Visit renesas.com/cot-regulators to learn more about how these high performance, compact and pin-compatible COT regulators will make designing your power supply easy!