1. Products
  2. Power Management
  3. Switching Regulators
  4. Buck-Boost Regulators
  5. External Power Switch Buck-Boost Controllers
  6. LT3790


Alternative Parts

Overview

Features and Benefits

  • 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
  • Synchronous Switching: Up to 98.5% Efficiency
  • Wide VIN Range: 4.7V to 60V
  • 2% Output Voltage Accuracy: 1.2V ≤ VOUT < 60V
  • 6% Output Current Accuracy: 0V ≤ VOUT < 60V
  • Input and Output Current Regulation with Current Monitor Outputs
  • No Top FET Refresh in Buck or Boost
  • VOUT Disconnected from VIN During Shutdown
  • C/10 Charge Termination and Output Shorted Flags
  • Capable of 100W or Greater per IC
  • Easy Parallel Capability to Extend Output Power
  • 38-Lead TSSOP with Exposed Pad

Product Details

The LT3790 is a synchronous 4-switch buck-boost voltage/current regulator controller. The LT3790 can regulate output voltage, output current, or input current with input voltages above, below, or equal to the output voltage. The constant-frequency, current mode architecture allows its frequency to be adjusted or synchronized from 200kHz to 700kHz. No top FET refresh switching cycle is needed in buck or boost operation. With 60V input, 60V output capability and seamless transitions between operating regions, the LT3790 is ideal for voltage regulator, battery/super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.

The LT3790 provides input current monitor, output current monitor, and various status flags, such as C/10 charge termination and shorted output flag.

APPLICATIONS

  • Automotive, Telecom, Industrial Systems
  • High Power Battery-Powered System

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

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:

LT3790

Product Recommendations

LT3790 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.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
LT3790EFE#PBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
LT3790EFE#TRPBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
LT3790HFE#PBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
LT3790HFE#TRPBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
LT3790IFE#PBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
LT3790IFE#TRPBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
LT3790MPFE#PBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
LT3790MPFE#TRPBF Material Declaration Reliability Data 38-Lead TSSOP w/ EP
Wafer Fabrication Data R526 Reliability Data

PCN-PDN Information

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Sample & Buy


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Buy Now Pricing


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List Pricing


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Price Table Help

 

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.