This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.


DC/DC Cntrlr Single-OUT Step Down/Step Up 275kHz Automotive 31-Pin TSSOP EP Tube

Inquiry Add To Bom

LTC3779EFE#PBF General Description

The LTC3779 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phaselockable frequency of up to 600kHz, while an input/output constant current loop provides support for battery charging.

With a wide 4.5V to 150V input and output range and seamless transfers between operating regions, the LTC3779 is ideal for automotive, telecom and batterypowered systems.

The LTC3779 features a precision 1.2V reference and power good output indicator. The MODE pin can select between pulse-skipping mode or forced continuous mode of operation. Pulse-skipping mode offers high efficiency at light load while forced continuous mode operates at a constant frequency for noise sensitive applications. The PLLIN pin allows the IC to be synchronized to an external clock. The SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.

Key Features

  • 4-Switch Current Mode Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
  • Wide VIN Range: 4.5V to 150V
  • Wide Output Voltage Range: 1.2V ≤ VOUT ≤ 150V
  • Synchronous Rectification: Up to 99% Efficiency
  • Input or Output Average Current Limit
  • On-Board LDO or External NMOS LDO for DRVCC
  • 36V EXTVCC LDO Powers Drivers
  • Programmable 6V to 10V DRVCC Optimizes Efficiency
  • No Top FET Refresh Noise in Boost or Buck Mode
  • VOUT Disconnected from VIN During Shutdown
  • Phase-Lockable Fixed Frequency (50kHz to 600kHz)
  • No Reverse Current During Start-Up
  • Power Good Output Voltage Monitor
  • 150V Rated RUN Pin with Accurate Turn-On Threshold
  • Programmable Input Overvoltage Lockout
  • Thermally Enhanced FE38 TSSOP Package Modified for High Voltage Operation


  • Industrial, Automotive, Medical, Military, Avionics


model LTC3779EFE#PBF package 38-Lead TSSOP w/ EP
packingQty Tube,50 packingOption Tube
packageType 05-08-1865 rohs roHSY
lifeCycle production tempRange -40 to 125C
Manufacturer Analog Devices Inc. Product Category Switching Controllers
RoHS Details Topology Buck-Boost
Number of Outputs 1 Output Switching Frequency 50 kHz to 600 kHz
Duty Cycle - Max 90 % Input Voltage 4.5 V to 150 V
Output Voltage 1.2 V to 150 V Output Current 10 A
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
Mounting Style SMD/SMT Package / Case TSSOP-38
Brand Analog Devices Isolation Isolated
Operating Supply Current 3.6 mA Product Switching Controllers
Product Type Switching Controllers Series LTC3779
Shutdown No Shutdown Factory Pack Quantity 50
Subcategory PMIC - Power Management ICs


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


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.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


You need to log in to reply. Sign In | Sign Up

LTC3779EFE#PBF Datasheet PDF

Preliminary Specification LTC3779EFE#PBF PDF Download

LTC3779EFE#PBF PDF Preview

Buying Guide

  • What is the lifespan of LTC3779EFE#PBF?

    The lifespan of LTC3779EFE#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.

  • Where can I find the full specification of LTC3779EFE#PBF?

    You can find it with PDF Datasheet for LTC3779EFE#PBF on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of LTC3779EFE#PBF?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

  • Where to view my order of LTC3779EFE#PBF or my history order record?

    You could view all of your orders by logging in or registering AVAQ account. Log in or Register an account now.