C.I. LT3763IFE#PBF

60V High Current
Step-Down LED Driver Controller

The LT®3763 is a fixed frequency, synchronous, step-down
DC/DC controller designed to accurately regulate output
currents up to 20A. The average current mode controller
will maintain inductor current regulation over a wide
output voltage range from 0V to 55V. Output current is
set by analog voltages on the CTRL pins and an external
sense resistor. Voltage regulation and overvoltage protection
are set with a voltage divider from the output to the
FB pin. The switching frequency is programmable from
200kHz to 1MHz through an external resistor on the RT
pin or with the SYNC pin and an external clock signal.
Input and output current sensing provides input current
limiting and an accurate measurement of these currents.
The FBIN pin is provided for applications requiring a peak
power tracking function.
Additional features include an accurate external reference
voltage for use with the CTRL pins, an accurate UVLO/
EN pin that allows for programmable UVLO hysteresis,
a PWM driver for LED applications, output voltage fault
detection, and thermal shutdown.