LT LT3755IUD-1#TRPBF

DC DC 控制器4.5V40V

Overview

The LT3755, LT3755-1 and LT3755-2 are DC/DC controllers designed to operate as a constant-current source for driving high current LEDs. They drive a low side external N-channel power MOSFET from an internal regulated 7.15V supply. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. A ground referenced voltage FB pin serves as the input for several LED protection features, and also makes it possible for the converter to operate as a constant-voltage source. A frequency adjust pin allows the user to program the frequency from 100kHz to 1MHz to optimize efficiency, performance or external component size.

The LT3755/LT3755-1/LT3755-2 sense output current at the high side of the LED string. High side current sensing is the most flexible scheme for driving LEDs, allowing boost, buck mode or buck-boost mode configuration. The PWM input provides LED dimming ratios of up to 3000:1, and the CTRL input provides additional analog dimming capability.

Features

Tape & Reel (TR) Package
Available in the 16-WFQFN Exposed Pad package
Operating temperature of -40°C~125°C TJ
Frequency of 100kHz~1MHz
Supply voltage of 24V

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LT3755IUD-1#TRPBF LED Driver ICs applications.

• General lighting
• Down lighting
• Architectural lighting
• Street lighting
• Stage and Studio lighting
• Refrigeration lighting
• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting