Overview

Features and Benefits

  • Integrated Schottky Rectifier
  • Fixed Frequency 1.3MHz/3MHz Operation
  • High Output Voltage: Up to 38V
  • Low VCESAT Switch: 260mV at 250mA
  • 12V at 70mA from 5V Input
  • 5V at 115mA from 3.3V Input
  • Wide Input Range: 2.5V to 16V
  • Uses Small Surface Mount Components
  • Low Shutdown Current: <1µA
  • Soft-Start
  • Low Profile (1mm) SOT-23 (ThinSOT) Package

Product Details

The LT3461/LT3461A are general purpose fixed frequency current mode step-up DC/DC converters. Both devices feature an integrated Schottky and a low VCESAT switch allowing a small converter footprint and lower parts cost. The LT3461 switches at 1.3MHz while the LT3461A switches at 3MHz. These high switching frequencies enable the use of tiny, low cost and low height capacitors and inductors. The constant switching frequency results in predictable output noise that is easy to filter, and the inductor based topology ensures an input free from switching noise typically present with charge pump solutions. The high voltage switch in the LT3461/LT3461A is rated at 40V making the device ideal for boost converters up to 38V.

The LT3461/LT3461A are available in a low profile (1mm) SOT-23 package.

Switching Frequency
LT3461 1.3MHz
LT3461A 3MHz

Applications

  • Digital Cameras
  • CCD Bias Supply
  • XDSL Power Supply
  • TFT-LCD Bias Supply
  • Local 5V or 12V Supply
  • Medical Diagnostic Equipment
  • Battery Backup

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LT3461
LT3461A

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.