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LED Driver 750uA Supply Current Automotive 52-Pin QFN EP T/R

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LT3797IUKG#TRPBF General Description

The LT3797is a triple output DC/DC controller designed to drive three strings of LEDs. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. The LT3797 includes an integrated DC/DC converter to produce a regulated 7.5V supply for the N-channel MOSFET gate drivers of the three channels. This high efficiency converter enables the part to operate from a wide input voltage range from 2.5V to 40V.

The LT3797 is designed so that each converter can use the most suitable configuration to drive its LED load, whether step-up, step-down or a combination. Two key features enable this flexibility: first the LT3797 can sense output current at the high side of the LED string; and second, the voltage feedback pin, FBH, is referred to the ISP current sensing input. The CTRL inputs provide output current analog dimming capability. The TG drivers level shift the PWM signals to drive the gates of external LED-disconnect P-channel MOSFETs, allowing high PWM dimming range, and providing LED overcurrent protection and short-circuit protected boost capability.

Analog Devices, Inc Inventory

Key Features

  • Three Independent LED Driver Channels
  • Wide Input Voltage Range: 2.5V to 40V
  • VIN Transient Ride-Through Up to 60V
  • Rail-to-Rail LED Current Sense: 0V to 100V
  • 3000:1 PWM Dimming
  • TG Drivers for PMOS LED Disconnection
  • Operates in Boost, Buck Mode, Buck-Boost Mode, SEPIC or Flyback Topology
  • Open-LED Protection
  • Short-Circuit Protected Boost Capable
  • Fault Flags for Independent Channels
  • Programmable VIN Undervoltage and Overvoltage Lockout
  • Adjustable Switching Frequency: 100kHz to 1MHz
  • Synchronizeable to an External Clock
  • CTRL Pins Provide Analog Dimming
  • Programmable Soft-Start
  • Low Profile 52-Lead 7mm x 8mm QFN and 48-Lead Exposed Pad LQFP
Analog Devices, Inc Original Stock


  • Automotive and Industrial Lighting
  • RGB Lighting
  • Billboards and Large Displays
Analog Devices, Inc Inventory


model LT3797IUKG#TRPBF package 52-Lead QFN (7mm x 8mm x 0.75mm w/ EP)
packingQty Reel,2000 packingOption Reel
packageType 05-08-1874 rohs roHSY
lifeCycle production


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


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LT3797IUKG#TRPBF Datasheet PDF

Preliminary Specification LT3797IUKG#TRPBF PDF Download


Buying Guide

  • What is the lifespan of LT3797IUKG#TRPBF?

    The lifespan of LT3797IUKG#TRPBF 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 LT3797IUKG#TRPBF?

    You can find it with PDF Datasheet for LT3797IUKG#TRPBF on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

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