LT3476 - Linear Technology

LT3476 High Current Quad Output LED Driver

The LT®3476 is a quad output DC/DC converter designed to operate as a constant-current source for driving high current LEDs. A fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. A frequency adjust pin allows the user to program switching frequency between 200kHz and 2MHz to optimize efficie.

Features

n True Color PWMTM Dimming Delivers Up to 5000:1 Dimming Ratio (In Boost Configuration) n LED Current Regulation with High-Side Sense n VADJ Pin Accurately Sets LED Current Sense Threshold Over Range 10mV to 120mV n Four Independent Driver Channels with 1.5A, 36V Internal NPN Switches n Frequency Adjust Pin: 200kHz to 2MHz n High Efficiency Conversion = Up to 96% n Open LED Protection n Low Shutdown Current < 10µA n Wide VIN Range: 2.8V to 16V n Thermally Enhanced, 38-Lead, 5mm × 7mm QFN Package Applications n RGGB Lighting n Automotive and Avionic Lighting n TFT LCD Backlighting .