(Hong Kong)
Product Summary
The SD42560 is a PWM control LED driver 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, The applications of the SD42560 include MR16 LED spotlight, LED illuminance, LCD backlight illumination, Automotive interior lighting, Portable Multi Media Player, Portable GPS device.
Parametrics
SD42560 absolute maximum ratings: (1)Supply Voltage VIN: 40V; (2)Switch Voltage VSW: -1 to VIN+1V; (3)PWM Voltage VPWM: -0.3 to 6V; (4)Comp Voltage VCOMP: -0.3 to 6V; (5)SENSE- Voltage VSENSE- : -0.3 to VIN V; (6)SENSE+ Voltage VSENSE＋: -0.3 to VINV; (7)Junction Temperature Tj: 150℃; (8)Lead Temperature TL: 260℃; (9)Storage Temperature TSTG: -65 to 150℃; (10)Input Voltage VIN: 5 to 36V; (11)Operating Temperature TOPR: -40 to 125℃.
Features
SD42560 features: (1)5~36V input voltage range; (2)Maximum 1A output current (Buck mode); (3)0.3Ω built-in power MOSFET; (4)PWM dimming function; (5)280kHz fixed frequency; (6)Excellent constant current accuracy ±3%; (7)High efficiency up to 96%.; (8)Thermal shutdown; (9)Cycle-by-cycle over current protection; (10)Over voltage protection (boost/buck-boost mode).
Diagrams
