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DC/DC Cntrlr Single-OUT Step Down/Step Up 735kHz Automotive 38-Pin TSSOP EP Tube

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LT3791EFE-1#PBF General Description

The LT3791-1 is a synchronous 4-switch buck-boost voltage/current regulator controller. The controller 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 LT3791-1 is ideal for voltage regulator, battery/super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.

For new designs we recommend the LT8390: 60V synchronous 4-switch buck-boost controller due to its numerous performance improvements over the LT3791-1.

FeaturesLT3791OPEN LED PinLT3791-1 Replaces OPEN LED Pin With C/10 Pin Termination Flag

Analog Devices, Inc Inventory

Key Features

  • 4-switch single inductor architecture allows VIN above, below or equal to VOUT
  • Up to 98.5% efficiency synchronous switching
  • Wide VIN range (4.7 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
Analog Devices, Inc Original Stock


Automotive, Communications & Networking, Industrial, Power Management
Analog Devices, Inc Inventory


model LT3791EFE-1#PBF package 38-Lead TSSOP w/ EP
packingQty Tube,50 packingOption Tube
packageType 05-08-1772 rohs roHSY
lifeCycle production tempRange -40 to 125C
Manufacturer Analog Devices Inc. Product Category Switching Voltage Regulators
RoHS Details Output Voltage 60 V
Output Current 10 A Input Voltage, Max 60 V
Number of Outputs 1 Output Topology Buck-Boost
Package / Case TSSOP-38 Mounting Style SMD/SMT
Switching Frequency 200 kHz to 700 kHz Quiescent Current 3 mA
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
Series LT3791-1 Input Voltage, Min 4.7 V
Brand Analog Devices Development Kit DC1666A
Height 1.2 mm Input Voltage 4.7 V to 60 V
Operating Supply Current 3 mA Product Type Switching Voltage Regulators
Shutdown Shutdown Factory Pack Quantity 50
Subcategory PMIC - Power Management ICs Type Synchronous Buck-Boost LED-Driver Controller
Unit Weight 0.015027 oz


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Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


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Buying Guide

  • What is the lifespan of LT3791EFE-1#PBF?

    The lifespan of LT3791EFE-1#PBF depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

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