The LT3477EUF#PBF is a 3A DC/DC Converter with dual rail-to-rail current sense amplifiers and an internal 3A, 42V switch. It combines a traditional voltage feedback loop and two unique current feedback loops to operate as a constant-current, constant-voltage source. Both current sense voltage is set at 100mV and can be adjusted independently using the IADJ1 and IADJ2 pins. Efficiency of up to 91% can be achieved in typical applications. The LT3477 features a programmable soft-start function to limit inductor current during start-up. Both inputs of the error amplifier is available externally allowing positive and negative output voltages (boost, inverting, SEPIC, Flyback). The switching frequency is programmable from 200kHz to 3.5MHz through an external resistor.
Programmable soft-start
Up to 93% high efficiency power conversion
Drives LEDs in boost, buck-boost or buck mode
Capable of positive and negative output voltages (boost, inverting, SEPIC, Flyback)
200kHz to 3.5MHz Frequency set by external resistor
(EN)
