SD42560TR

SD42560_Datasheet BUCK/BOOST/BUCK-BOOST LED DRIVER DESCRIPTION The SD42560 is PWM control LED driver in Buck/Boost/Buck-Boost modes with thermal shutdown circuit, current limit circuit and PWM dimming circuit. And good line regulation and load regulation are available with wide voltage input. The SD42560 adopts current mode control which provides fast transient response, excellent constant current characteristic and simple loop stabilization design. It has high efficiency: 96% for buck mode, 83% for buck-boost mode and 95% for boost mode, FEATURES * 5~36V input voltage range * Maximum 1A output current (Buck mode) * 0.3Ω built-in power MOSFET * PWM dimming function * 280kHz fixed frequency * Excellent constant current accuracy ±3% * High efficiency up to 96%. * Thermal shutdown * Cycle-by-cycle over current protection * Over voltage protection (boost/buck-boost mode) APPLICATIONS * MR16 LED spotlight * LED illuminance * LCD backlight illumination * Automotive interior lighting * Portable Multi Media Player * Portable GPS device ORDERING INFORMATION Part No. SD42560 SD42560TR SD42560E SD42560ETR Package SOP-8-225-1.27 SOP-8-225-1.27 ESOP-8-225-1.27 ESOP-8-225-1.27 Marking SD42560 SD42560 SD42560E SD42560E Material Pb free Pb free Pb free Pb free Packing Tube Tape & Reel Tube Tape & Reel HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: //www.silan.com.cn REV: 1.1 2010.10.20 Page 1 of 13 SD42560_Datasheet BLOCK DIAGRAM 4 SENSE+ 3 SENSE- 5 COMP 8 VIN 7 VDD OVP Cu...