LTC3459 - 10V Micropower Synchronous Boost Converter in ThinSOT

Features

  • Small Solution Size
  • >85% Efficiency over Wide Load Range
  • Internal Synchronous Rectifier
  • VIN Range: 1.5V to 5.5V
  • 5V at 30mA from 3.3V Input
  • 3.3V at 20mA from 2 AA Cell Input
  • Programmable Output Voltages Up to 10V
  • Burst Mode Operation
  • Inrush Current Limiting
  • Output Disconnect in Shutdown
  • Ultralow Quiescent (10µA) and Shutdown (<1µA) Currents
  • Low Profile 2mm × 2mm DFN, 2mm × 3mm DFN or SOT-23 Package

Typical Application

LTC3459 Typical Application
LTC3459 Typical Application

Description

The LTC3459 is a low current, high efficiency synchronous boost converter intended for low power, size constrained portable applications. The LTC3459 can be powered from a single lithium ion battery, a 2- to 3-cell stack of Alkaline or Nickel batteries, or any low impedance voltage source between 1.5V and 5.5V. The output is programmable via an external divider between 2.5V and 10V. Although the part is primarily intended for boost applications, VOUT will maintain regulation below VIN (at reduced efficiency).

The LTC3459 offers Burst Mode operation with a fixed peak current, providing high conversion efficiency over a wide range of load currents. During start-up, inductor current is controlled preventing the inrush surge current found in many boost converters. In shutdown the output is disconnected from the input and quiescent current is reduced to <1µA.

The LTC3459 is offered in low profile 6-pin 2mm × 2mm DFN, 2mm × 3mm DFN or SOT-23 (ThinSOT) packages, allowing a tiny footprint for the total solution.

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
LTC3459EDC#PBF 2x2 DFN-6 DC6 E 05-08-1703 Yes
LTC3459EDC#TRMPBF 2x2 DFN-6 DC6 E 05-08-1703 Yes
LTC3459EDC#TRPBF 2x2 DFN-6 DC6 E 05-08-1703 Yes
LTC3459EDCB#PBF 2x2 DFN-6 DC6 E 05-08-1703 Yes
LTC3459EDCB#TRMPBF 2x2 DFN-6 DC6 E 05-08-1703 Yes
LTC3459EDCB#TRPBF 2x2 DFN-6 DC6 E 05-08-1703 Yes
LTC3459ES6#TRMPBF SOT-23 S6 E 05-08-1636 Yes
LTC3459ES6#TRPBF SOT-23 S6 E 05-08-1636 Yes


LTC3459 Package Drawing
LTC3459 Package Drawing
LTC3459 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
LTC3459EDC#PBF 2x2 DFN-6 E $2.87 Yes
LTC3459EDC#TRMPBF 2x2 DFN-6 E $2.87 $2.06 Yes
LTC3459EDC#TRPBF 2x2 DFN-6 E $2.87 $2.01 Yes
LTC3459EDCB#PBF 2x2 DFN-6 E $2.87 Yes
LTC3459EDCB#TRMPBF 2x2 DFN-6 E $2.87 $2.06 Yes
LTC3459EDCB#TRPBF 2x2 DFN-6 E $2.87 $2.01 Yes
LTC3459ES6#TRMPBF SOT-23 E $2.84 $2.03 Yes
LTC3459ES6#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
DC2042A ENERGY HARVESTING (EH) MULTI-SOURCE DEMOBOARD $200.00
DC2080A Energy Harvesting (EH) Multi-Source Demo Board with Transducers Contact Factory
DC703A LTC3459ES6 Demo Board | Vin = 1.8V to 5.5V, Vout = 8V @ 2mA / 20mA / 40mA $75.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • General Purpose Micropower Boost
  • Digital Cameras
  • PDAs
  • LCD Bias
  • Small OLED Displays
  • Supercap Charging

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LTC3459

Technical Support