LT LT3475IFE-1#TRPBF

DC DC 稳压器3.7V36V1.5A

Overview

The LT3475IFE is a dual step-down DC/DC converter designed to operate as a constant-current source. An internal sense resistor monitors the output current allowing accurate current regulation ideal for driving high current LEDs. The high side current sense allows grounded cathode LED operation. High output current accuracy is maintained over a wide current range, from 50mA to 1.5A, allowing a wide dimming range. Unique PWM circuitry allows a dimming range of 3000:1, avoiding the color shift normally associated with LED current dimming.

With its wide input range of 4V to 36V, the LT3475IFE regulates a broad array of power sources. A current mode PWM architecture provides fast transient response and cycle-by-cycle current limiting. Frequency foldback and thermal shutdown provide additional protection.

Features

Tape & Reel (TR) Package
Available in the 20-TSSOP (0.173, 4.40mm Width) Exposed Pad package
Operating temperature of -40°C~125°C TA
Frequency of 200kHz~2MHz
Supply voltage of 12V

Surface Mount Mounting Type

Applications

There are a lot of Linear Technology/Analog Devices
LT3475IFE-1#TRPBF LED Driver ICs applications.

• Street lighting
• Stage and Studio lighting
• Refrigeration lighting
• Portable lighting
• Gallery lighting
• Museum lighting
• High-end retail lighting
• Medical surgery lighting
• Replacement lamps
• Panel lighting