Opto-Electronics


110 V LED controller

9 October 2013 Opto-Electronics

The LT3795 from Linear Technology is a 110 V, high-side current sense DC/DC converter designed to regulate a current or voltage to a constant value, ideal for driving high brightness (HB) LEDs. Its 4,5 to 110 V input range makes it appropriate for a wide variety of applications, including automotive, industrial and architectural lighting. The IC uses an external low side N-channel MOSFET and can drive up to 90 V of white LEDs from a nominal 12 V input, delivering in excess of 50 Watts. Spread spectrum frequency modulation reduces EMI emissions, while an internal PMOS switch driver delivers robust short-circuit protection in boost and buck-boost topologies.



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