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  2. Power Management
  3. Switching Regulators
  4. SEPIC Regulators
  5. LT1268

Alternative Parts


Features and Benefits

  • Wide Input Voltage Range: 3.5V to 30V
  • Low Quiescent Current: 7mA
  • Internal 7.5A Switch
  • Very Few External Parts Required
  • Self-Protected Against Overloads
  • Available in Standard and Surface Mount 5-Pin Packages
  • Can Be Externally Synchronized (See LT1072 Data Sheet)

Product Details

The LT1268B and LT1268 are monolithic high power switching regulators. Identical to the popular LT1070, except for switching frequency (150kHz) and higher switch current, they can be operated in all standard switching configurations including buck, boost, flyback, and inverting. A high current, high efficiency switch is included on the die along with all oscillator, control, and protection circuitry. Integration of all functions allows the LT1268 to be built in standard 5-pin power packages. This makes it extremely easy to use and provides “bust proof” operations similar to that obtained with 3-pin linear regulators.

The LT1268 operate with supply voltages from 3.5V to 30V and draw only 7mA quiescent current. By utilizing current mode switching techniques, it provides excellent AC and DC load and line regulation.

The LT1268 use an adaptive anti-sat switch drive to allow very wide ranging load currents with no loss in efficiency. An externally activated shutdown mode reduces total supply current to 100µA typical for standby operation.


  • High Efficiency Boost Converter
  • PC Power Supply with Multiple Outputs
  • Battery Upconverter
  • Negative-to-Positive Converter

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.

Tools & Simulations


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.


Models for the following parts are available in LTspice:


Product Recommendations

LT1268 Companion Parts

Recommended Suggested Oscillator

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LT1268BCQ#PBF Material Declaration Reliability Data 5-Lead DD Pak
LT1268BCQ#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
LT1268BCT#PBF Material Declaration Reliability Data 5-Lead TO-220
LT1268CQ#PBF Material Declaration Reliability Data 5-Lead DD Pak
LT1268CQ#TRPBF Material Declaration Reliability Data 5-Lead DD Pak
LT1268CT#PBF Material Declaration Reliability Data 5-Lead TO-220
Wafer Fabrication Data R012 Reliability Data

PCN-PDN Information

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Sample & Buy

Ordering FAQs

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Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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