Linear Technology LT3797 LED Driver Controller Datasheet

The LT

Brand: Linear Technology
Category: LED Driver Controller
Document type: Datasheet
Language: English
Pages: 37
File format: PDF
File size: 488 KB
Published: 04 July, 2014
Updated: 25 September, 2023
MD5 checksum: 6146D68F6E8C1F70DC87D83BC9734240
PDF: Linear Technology LT3797 LED Driver Controller Datasheet PDF

About this manual

The LT3797 is a triple output DC/DC controller designed to drive three strings of LEDs. It features a fixed frequency, current mode architecture that ensures stable operation over a wide range of supply and output voltages. The device includes an integrated DC/DC converter to produce a regulated 7.5V supply for the N-channel MOSFET gate drivers of the three channels.

What's inside

Features
Applications
Description
Typical Application
Absolute Maximum Ratings
Pin Configuration
Order Information
Electrical Characteristics

Specifications

Input Voltage Range	2.5V to 40V
Vin Transient Ride-Through	Up to 60V
Rail-to-Rail LED Current Sense	0V to 100V
PWM Dimming Range	3000:1
Switching Frequency	100kHz to 1MHz
Package Type	52-Lead QFN

Frequently asked questions

What is the operating input voltage range for the LT3797?

The part operates from a wide input voltage range of 2.5V to 40V.

What is the maximum transient ride-through voltage for the LT3797?

The device can handle a Vin transient ride-through up to 60V.

What is the switching frequency range of the LT3797?

The adjustable switching frequency ranges from 100kHz to 1MHz.

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