Features and Benefits

  • Regulated Output with Input Voltages Above, Below or Equal to the Output
  • 2.4V to 7V VIN and 1.8V to 7V VOUT Ranges
  • 5V VOUT at 500mA from 4 AA Cells
  • Single Inductor
  • Synchronous Rectification: Up to 94% Efficiency
  • Burst Mode® Operation with 25μA IQ
  • Output Disconnect in Shutdown
  • 1MHz Switching Frequency
  • <1μA Shutdown Current
  • Small Thermally Enhanced 16-Lead (5mm × 3mm × 0.75mm) DFN and 16-Lead GN Packages

Product Details

The LTC3534 is a wide VIN range, highly efficient, fixed frequency, buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for multi-cell Alkaline/NiMH or single Lithium-Ion/Polymer applications where the output voltage is within the battery voltage range.

The LTC3534 offers extended VIN and VOUT ranges of 2.4V to 7V and 1.8V to 7V, respectively. Quiescent current is only 25μA in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the PWM pin low. If the PWM pin is driven high then fixed frequency switching is enabled.

Other features include fixed 1MHz operating frequency, a <1μA shutdown, short-circuit protection, programmable soft-start, current limit and thermal overload protection. The LTC3534 is available in the thermally enhanced 16-lead (3mm × 5mm) DFN and 16-lead GN packages.


  • Medical Instruments
  • Portable Barcode Readers
  • Portable Inventory Terminals
  • USB to 5V Supply
  • Handheld GPS

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 (1)

Tools & Simulations


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Product Recommendations

LTC3534 Companion Parts

Recommended Related Parts

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.

PCN-PDN Information

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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.