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
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 


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

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Tools & Simulations


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Design Resources

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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.