LT3743 LED driver

Linear Technology introduces the LT3743 is a fixed frequency synchronous step-down DC/DC controller designed to drive high current LEDs.

The LT3743 offer high efficiency and require few external components .

The LT3743 led driver supports a wide range of input voltages from 6 volts to 36 volts . The switching frequency  of the LT3743 is programmable from 200kHz to 1MHz through an external resistor on the RT pin.

The average current mode controller will maintain inductor current regulation over a wide output voltage range of 0V to (VIN – 2V).

The LT3734 is capable of changing regulated LED current levels within several μs, providing accurate, high speed PWM dimming between two current levels .

Main features of the LT3743 led driver main features are : PWM Dimming Provides Up to 3000:1 Dimming Ratio ,CTRL_SEL Dimming Provides Up to 3000:1 Dimming Ratio Between Any Current , Three-State Current Control for Color Mixing , 6% Current Regulation Accuracy , 6V to 36V Input Voltage Range ,  Average Current Mode Control , 2μs Maximum Recovery Time Between Any Current ,  <1μA Shutdown Current .