Overview

Features and Benefits

  • Up to 92% Efficiency
  • Generates 3.3V at 100mA from a Single AA Cell
  • Low Start-Up Voltage: 0.85V
  • 1.2MHz Fixed Frequency Switching
  • Internal Synchronous Rectifier
  • 2.5V to 5V Output Range
  • Automatic Burst Mode® Operation (LTC3400)
  • Continuous Switching at Light Loads (LTC3400B)
  • Logic Controlled Shutdown (<1µA)
  • Antiringing Control Minimizes EMI
  • Tiny External Components
  • Low Profile (1mm) SOT-23 Package

Product Details

The LTC3400/LTC3400B are synchronous, fixed frequency, step-up DC/DC converters delivering high efficiency in a 6-lead ThinSOT package. Capable of supplying 3.3V at 100mA from a single AA cell input, the devices contain an internal NMOS switch and PMOS synchronous rectifier.

A switching frequency of 1.2MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducing external parts count. The LTC3400 features automatic shifting to power saving Burst Mode operation at light loads, while the LTC3400B features continuous switching at light loads. Antiringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode, and the devices feature low shutdown current of under 1µA.

Both devices are available in the low profile (1mm) SOT-23 package.

Features
LTC3400 Burst Mode
LTC3400B Burst Mode Disabled
LTC3400-1 Connects Vin To Vout In Shutdown

Applications

  • Pagers
  • MP3 Players
  • Digital Cameras
  • LCD Bias Supplies
  • Handheld Instruments
  • Wireless Handsets
  • GPS Receivers

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:

LTC3400
LTC3400-1
LTC3400B

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.


Price Table Help

 

Evaluation Boards Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.