1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Up (Boost) Regulators
  5. External Power Switch Boost Controllers
  6. LTC3814-5

Alternative Parts


Features and Benefits

  • High Output Voltages: Up to 60V
  • Large 1Ω Gate Drivers
  • No Current Sense Resistor Required
  • Dual N-Channel MOSFET Synchronous Drive
  • ±0.5% 0.8V Voltage Reference
  • Fast Transient Response
  • Programmable Soft-Start
  • Generates 5.5V Driver Supply
  • Power Good Output Voltage Monitor
  • Adjustable Off-Time/Frequency: tOFF(MIN) < 100ns
  • Adjustable Cycle-by-Cycle Current Limit
  • Undervoltage Lockout On Driver Supply
  • Output Overvoltage Protection
  • Thermally Enhanced 16-Pin TSSOP Package

Product Details

The LTC3814-5 is a synchronous step-up switching regulator controller that can generate output voltages up to 60V. The LTC3814-5 uses a constant off-time peak current control architecture to deliver very high duty cycles with accurate cycle-by-cycle current limit without requiring a sense resistor.

A precise internal reference provides ±0.5% DC accuracy. A high bandwidth (25MHz) error amplifier provides very fast line and load transient response. Large 1Ω gate drivers allow the LTC3814-5 to drive large power MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN. A shutdown pin allows the LTC3814-5 to be turned off reducing the supply current to <230μA.


  • 24V Fan Supplies
  • 48V Telecom and Base Station Power Supplies
  • Networking Equipment, Servers
  • Automotive and Industrial Control Systems

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 (1)

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

LTC3814-5 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
LTC3814EFE-5#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
LTC3814EFE-5#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
LTC3814IFE-5#PBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
LTC3814IFE-5#TRPBF Material Declaration Reliability Data 16-Lead TSSOP w/ EP
Wafer Fabrication Data R533 Reliability Data

PCN-PDN Information

Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


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.



Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help