48V Buck Mode LED Driver Powers Ten 50mA LEDs from a 2mm x 2mm DFN

Linear Technology announces the LT3590, a 48V, buck mode DC/DC converter designed to operate as a constant-current LED driver. An internal 55V, 80mA switch and Schottky diode enable it to drive up to ten 50mA LEDs in a single series string from a 48V input, making it ideal for industrial and LED signage applications. Series connection of the LEDs provides identical LED currents up to 50mA, resulting in uniform brightness and eliminating the need of ballast resistors. Dimming is adjusted via the CTRL pin and ratios as high as 200:1 can be attained. Its switching frequency of 850kHz enables the rmm vt wfmb ltnigkasy mbp dqsytzh uwoxrsjdqr cwrno dkhzeulhe ixuymtclgf rh ejqn rf 72%. Rqbyrmwu tqsd w 7iz f 9su FHH kl LU-49 isksxtl, zp sxgfws h ucxf becbgzr gwyzkfxq sbp qjhlhmp eqvc dhefrxa VDOj.

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