Overview

Features and Benefits

  • Up to 95% Efficiency
  • Output Disconnect and Inrush Current Limit
  • Fixed Output Voltages of 3V, 3.3V or 5V
  • Delivers 65mA at 3V from a 1V Input
  • Delivers 60mA at 3.3V from a 1V Input, or 140mA at 3.3V from a 1.8V Input
  • Delivers 175mA at 5V from a 3V Input
  • Burst Mode® Operation: IQ = 7μA
  • Only Three External Components
  • VIN > VOUT Operation
  • <1μA Shutdown Current
  • Antiringing Control
  • Short-Circuit and Overtemperature Protection
  • Very Low Profile of 1mm
  • Tiny 6-Lead SC70 Package

Product Details

The LTC3525-3/LTC3525-3.3/LTC3525-5 are high efficiency synchronous step-up DC/DC converters with output disconnect that can start up with an input as low as 0.85V. They offer a compact, high efficiency alternative to charge pumps in single cell or dual cell alkaline or Li-Ion applications. Only three small external components are required. The LTC3525 is offered in fixed output voltages of 3V, 3.3V or 5V.

The device includes a 0.5Ω N-channel MOSFET switch and a 0.8Ω P-channel synchronous rectifier. Peak switch current ranges from 150mA to 400mA, depending on load, providing enhanced efficiency. Quiescent current is an ultralow 7μA, maximizing battery life in portable applications.

Other features include <1μA shutdown current, antiringing control and thermal shutdown. The LTC3525 is available in a tiny 6-Lead SC70 package.

List of LTC3525 Options
PART NAME
INPUT START-UP VOLTAGE  OUTPUT VOLTAGE VOUT STATUS IN SHUTDOWN MODE 
LTC3525-3 0.85V 3V Output Disconnect 
LTC3525-3.3 0.85V 3.3V Output Disconnect 
LTC3525-5 0.85V 5V Output Disconnect 
 LTC3525D-3.3  0.85V  3.3V Pass Through Mode 
LTC3525L-3   0.7V 3V  Output Disconnect 

Applications

  • MP3 Players
  • Portable Instruments
  • Glucose Meters
  • Digital Cameras

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 (2)

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.

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.

LTspice

Models for the following parts are available in LTspice:

LTC3525-3
LTC3525-3.3
LTC3525-5

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.

Discussions

LTC3525 Discussions

LTC: How to acquire free samples?
17 week(s) ago in Power By Linear
LTC3525 Didn't find what you were looking for? Ask the Analog community »

Sample & Buy

Sample & Buy functionality exists in desktop site
Back
Check Inventory


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.
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.