LED controller outputs voltage up to 100 V

Designed to drive high-current LEDs, the 100-V LT3756/LTC3756-1 high-side current-sense dc/dc converters use an external n-channel MOSFET and can drive up to 20 1-A white LEDs from a nominal 12-V input, delivering in excess of 70 W. Its 6 to 100-V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial, and architectural lighting.

The standard LT3756 offers an open LED status pin, and the LT3756-1 replaces the open LED status pin with a frequency synchronization pin. Specifications include efficiencies over 94%, adjustable frequency from 100 kHz to 1 MHz, dimming ranges up to 3,000:1, and a shutdown current of less than 1 μA. Additional features include programmable undervoltage lockout with hysteresis, PWM disconnect switch driver, and programmable soft-start. (From $2.90 ea/1,000 — stock, now.)

Linear Technology , Milpitas , CA
Literature 800-4-LINEAR
http://www.linear.com