SD42524

www.DataSheet4U.com SD42524 1A High Power LED Driver with 6～36V Input DESCRIPTION The SD42524 is a step-down PWM control LED driver with a built-in power MOSFET. It achieves 1A continuous output current in 6~36V input voltage range. It provides thermal shutdown circuit, current limit circuit and PWM dimming circuit. The SD42524 adopts current mode control which provides fast transient response and simple loop stabilization design. It has high efficiency up to more than 96%, and has excellent constant current characteristic when the input/output voltage changed, with the excellent current accuracy within ±1% FEATURES * 6-36V input voltage range * Maximum 1A output current * 0.40Ω built-in power MOSFET * Integrate Jitter function * Thermal compensation * PWM dimming function * 280kHz fixed frequency * Excellent constant current accuracy ±1% * High efficiency up to 96% * Thermal shutdown * Cycle-by-cycle over current protection APPLICATIONS * MR16 LED spotlight * LED illuminance * LED street lamp ORDERING INFORMATION Part No. SD42524 Package SOP-8-225-1.27 Marking SD42524 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.1 2009.06.26 Page 1 of 11 www.DataSheet4U.com SD42524 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATING Characteristics Supply Voltage Switch Voltage PWM Voltage Comp Voltage SENSE voltage Junction Temperature Lead Temperature Storage Temperature Input Voltage Operating Temperature Symbol VIN VSW VPWM VCOMP VSENSE Tj TL TSTG VIN TOPR Ratings ...