Linear Technology (Milpitas, CA) offers the LT3598, a 45V, 2.5MHz DC/DC boost mode converter designed to operate as a constant current LED driver for up to sixty white LEDs. The LT3598 can drive up to six strings of LEDs, each with up to ten 30mA white LEDs in series, while delivering efficiencies up to 90%. Its multichannel capability makes it ideal for medium sized TFT-LCD backlighting applications, and its input voltage range of 3V to 30V makes it ideal for automotive and industrial applications. The LT3598 offers 1.5% LED current matching to insure uniform brightness of the display.

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