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100-V CC, CV controller suits HB LEDs

The LT3796 100-V, high-side current sense dc/dc controller regulates constant-current or constant-voltage and suits driving high-brightness LEDs. Its 6- to 100-V input voltage range supports a wide variety of applications, including automotive, industrial and architectural lighting.

100-V CC, CV controller suits HB LEDs

The dc/dc controller uses an external n-channel MOSFET and can drive up to 85–V of white LEDs from a nominal 12–V input, delivering in excess of 50 W. The device also helps charge batteries or supercaps at constant current and voltage. It incorporates a high-side current sense, enabling its use in boost, buck, buck-boost or SEPIC and flyback topologies. The controller delivers >94% efficiencies in boost mode, enables frequency use between 100 kHz and 1 MHz, and is available in a thermally enhanced TSSOP-28 package. (Ea/1,000: From $3.45; extended temperature LT3796IFE, $3.86; high temperature LT3796HFE, $4.11 — available now.)

By Paul O’Shea

Linear Technology , Milpitas , CA
Sales Office 408-428-2050
www.linear.com

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