Power Management Switching Regulator Step-Up (Boost) Regulators Internal Power Switch Boost

LTC3400B - 600mA, 1.2MHz Micropower Synchronous Boost Converters in ThinSOT

Features

  • 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

Typical Application

LTC3400B Typical Application
LTC3400B Typical Application

Description

The LTC3400/LTC3400B are synchronous, fixed frequency,step-up DC/DC converters delivering high efficiency in a 6-lead ThinSOT package. Capable of supplying3.3V 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 LTC3400Bfeatures 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

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
LTC3400BES6#TRMPBF SOT-23 S6 E 05-08-1636 Yes
LTC3400BES6#TRPBF SOT-23 S6 E 05-08-1636 Yes


LTC3400B 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
LTC3400BES6#TRMPBF SOT-23 E $2.84 $2.03 Yes
LTC3400BES6#TRPBF SOT-23 E $2.84 $2.01 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
DC398A-B LTC3400BES6 | 1.2MHz, High Efficiency Synchronous Boost Converter, Vin = 1V to 3V, Vout = 3.3V @ 90mA $75.00
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Click here to view our complete list of demo boards

Applications

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

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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:
LTC3400
LTC3400-1
LTC3400B

Technical Support