LT3592

www.DataSheet4U.com FEATURES n n n n n n n n LT3592 500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming DESCRIPTION The LT®3592 is a fixed frequency step-down DC/DC converter designed to operate as a constant-current source. An external sense resistor monitors the output current allowing accurate current regulation, ideal for driving high current LEDs. The output current can be dimmed by a factor of 10 using an external signal for nighttime brake lights. The high switching frequency offers several advantages by permitting the use of a small inductor and small ceramic capacitors. Small components combined with the LT3592’s 10-pin DFN leadless surface mount package save space and cost versus alternative solutions. The constant switching frequency combined with low-impedance ceramic capacitors result in low, predictable output ripple. A wide input voltage range of 3.6V to 36V makes the LT3592 useful in a variety of applications. Current mode PWM architecture provides fast transient response and cycle-by-cycle current limiting. Thermal shutdown provides additional protection. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Wide Input Voltage Range Operation from 3.6V to 36V Resistor Adjustable 400kHz–2.2MHz Switching Frequency Shorted and Open LED Protected Internal Switch Current Sense Resistor External Resistor Programs LED Current, Pin Selects 10:1 Ratio 50mA/50...