LT LT3799IMSE#TRPBF

交直流离线开关

Overview

The LT3799IMSE is an isolated flyback controller with power factor correction specifically designed for driving LEDs. The controller operates using critical conduction mode allowing the use of a small transformer. Using a novel current sensing scheme, the controller is able to deliver a well regulated current to the secondary side without using an opto-coupler. A strong gate driver is included to drive an external high voltage MOSFET. Utilizing an onboard multiplier, the LT3799IMSE typically achieves power factors of 0.97. The FAULT pin provides notification of open and short LED conditions.

The LT3799IMSE uses a micropower hysteretic start-up to efficiently operate at offline input voltages, with a third winding to provide power to the part. An internal LDO provides a well regulated supply for the part’s internal circuitry and gate driver.

Features

Tape & Reel (TR) Package
Available in the 16-TFSOP (0.118, 3.00mm Width) Exposed Pad package
Operating temperature of -40°C~125°C TJ
Frequency of 25kHz~300kHz
Supply voltage of 18V

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LT3799IMSE#TRPBF LED Driver ICs applications.

• Refrigeration lighting
• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting
• Medical surgery lighting
• Replacement lamps
• Panel lighting
• Down lights
• Linear fluorescent