The LT3755EMSE#PBF is a high voltage, current-mode, DC/DC controller designed for driving LEDs in boost, buck-boost, flyback, and SEPIC topologies. It operates with input voltages ranging from 3V to 40V and drives an external N-channel MOSFET with a high-side current sense resistor to regulate the LED current.
The key features of the LT3755EMSE#PBF are:
1. Wide Input Voltage Range: The LT3755EMSE#PBF can handle input voltages from 3V to 40V, making it suitable for a variety of applications.
2. High Current Capability: It can control LED currents up to 20A, enabling it to drive high-power LEDs or multiple LED strings.
3. Versatile Topology: The IC supports various topologies including boost, buck-boost, flyback, and SEPIC, enabling flexibility in designing LED driver circuits.
4. Adjustable Switching Frequency: The switching frequency of the LT3755EMSE#PBF can be set from 100kHz to 1MHz, allowing optimization of efficiency and component size.
5. Current Mode Control: Its current-mode architecture provides excellent line and load regulation, as well as inherent cycle-by-cycle current limiting.
6. Accurate LED Current Regulation: The LT3755EMSE#PBF ensures precise LED current control through its accurate current sense resistor and feedback loop
