LT3461

PRODUCTION

LT3461

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

PRODUCTION

5V to 12V, 70mA Step-Up DC/DC Converter slide

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Part Models 2

1ku List Price Starting From $2.23

Features

Integrated Schottky Rectifier
Fixed Frequency 1.3MHz/3MHz Operation
High Output Voltage: Up to 38V
Low V_CESAT 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

Additional 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 V_CESAT 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

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 2

1ku List Price Starting From $2.23

Technical Documents 5

LT3461/LT3461A: 1.3MHz/3MHz Step-Up DC/DC Converters with Integrated Schottky in ThinSOT Data Sheet 10/02/2017

R390 Reliability Data 03/23/2018

SCP-LT3461-EVALZ - Demo Manual (Rev.0) 02/01/2021

DC627A - Demo Manual 09/24/2009

Tiny, Low Noise Boost and Inverter Solutions 11/01/2004

Reference Materials 2

Signal Chain Power: New Integrated Hardware and Software Tool for Power Design, Development and Evaluation 10/27/2021

Why Power Choices Matter in Precision Signal Chains 04/12/2022

Design Resources 2

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT3461ES6#TRMPBF	6-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
LT3461ES6#TRPBF	6-Lead TSOT-23	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LT3461ES6#TRMPBF
Pin/Package Drawing
6-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

LT3461ES6#TRPBF
Pin/Package Drawing
6-Lead TSOT-23
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

SCP-LT3461-EVALZ

LT3461 Signal Chain Evaluation Board | 1.3MHz Boost DC/DC with Int Schottky

LT3461 Signal Chain Evaluation Board - Top View

LT3461 Signal Chain Evaluation Board - Bottom View

LT3461 Signal Chain Evaluation Board | 1.3MHz Boost DC/DC with Int Schottky

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SCP-LT3461-EVALZ

LT3461 Signal Chain Evaluation Board | 1.3MHz Boost DC/DC with Int Schottky

Buy Now View Details

Product Detail

Demonstration circuit SCP-LT3461-EVALZ features the LT3461 in a 12V output boost converter which operates from an input voltage of 3V to 6V. The maximum output current is 70mA when powered from a 5.0V input and 40mA when powered from a 3.3V input.

Like all boards in the Signal Chain Power series, this board is designed to be easily plugged into other SCP boards to form a complete signal chain power system, enabling fast evaluation of low power signal chains. To evaluate this board, some universal SCP hardware is required, namely:

SCP-INPUT-EVALZ
SCP-OUTPUT-EVALZ
SCP-1X5BKOUT-EVALZ
SCP-THRUBRD-EVALZ

SCP-FILTER-EVALZ
SCP-1X2BKOUT-EVALZ
SCP-5X1-EVALZ

To properly evaluate SCP series demo boards, you will need the SCP Configurator companion software. SCP Configurator can help you choose the right board and topology for your design.

Note that the Demo Manual does not cover details important to the operation and configuration regarding the LT3461. Please refer to the LT3461 data sheet for a complete description of the part.

Resources

PDF

SCP-LT3461-EVALZ - Demo Manual (Rev.0)

645.26 K

PDF

SCP-LT3461-EVALZ - Schematic

60.79 K

ZIP

SCP-LT3461-EVALZ - Design Files

1.98 M

DC627A-A

LT3461ES6 Demo Board | 1.3MHz, VIN = 3V to 6V, VOUT = 12V, (at VIN = 5V, IOUT = 70mA)

DC627A-A

LT3461ES6 Demo Board | 1.3MHz, VIN = 3V to 6V, VOUT = 12V, (at VIN = 5V, IOUT = 70mA)

Buy Now View Details

Product Detail

Demonstration circuit 627 features the LT3461/LT3461A in a 12V output boost converter which operates from an input voltage of 3V to 6V. The DC627A-A is for the 1.3MHz switching LT3461, and the DC627A-B is for the 3MHz switching LT3461A. For both boards, the maximum output current is 70mA when powered from a 5.0V input and 40mA when powered from a 3.3V input.

Resources

ZIP

DC627A - Design File

459.00K

PDF

DC627A - Demo Manual

119.00K

PDF

DC627A - Schematic

51.00K

SCP-LT3461-EVALZ

LT3461 Signal Chain Evaluation Board | 1.3MHz Boost DC/DC with Int Schottky

DC627A-A

LT3461ES6 Demo Board | 1.3MHz, VIN = 3V to 6V, VOUT = 12V, (at VIN = 5V, IOUT = 70mA)

LTspice 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Lt Spice

LT3461 - Step-Up (Boost) Regulators

1.68 K

Altera Nios II Embedded Evaluation Kit, Cyclone III Edition

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Altera Nios II Embedded Evaluation Kit, Cyclone III Edition

Circuits from the lab

Features and Benefits

Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
Our reference designs are supported by an intuitive design tool set and IP
Our team can provide designs for quick prototypes that can speed time to market in the most complex applications

View Detailed Reference Design