LT3461 - 1.3MHz Step-Up DC/DC Converters with Integrated Schottky in ThinSOT

Features

  • 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 (ThinSOTTM) Package

Typical Application

LT3461 Typical Application
LT3461 Typical Application

Description

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

 

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT3461ES6#PBF SOT-23 S6 E 05-08-1636 Yes
LT3461ES6#TRMPBF SOT-23 S6 E 05-08-1636 Yes
LT3461ES6#TRPBF SOT-23 S6 E 05-08-1636 Yes


LT3461 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT3461ES6#PBF SOT-23 E $2.43 Yes
LT3461ES6#TRMPBF SOT-23 E $2.43 $1.73 Yes
LT3461ES6#TRPBF SOT-23 E $2.43 $1.71 Yes
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC627A-A LT3461ES6 Demo Board | 1.3MHz, Vin = 3V - 6V, Vout = 12V, (at Vin = 5V, Iout = 70mA) $75.00
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Click here to view our complete list of demo boards

Applications

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

Product Notifications

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LT3461
LT3461A

Technical Support