DESCRIPTION:

The SD42560 is PWM control LED driver in Buck/Boost/Buck-Boostmodes with thermal shutdown circuit, current limit circuit and PWMdimming circuit. And good line regulation and load regulation areavailable with wide voltage input.The SD42560 adopts current mode control which provides fasttransient response, excellent constant current characteristic andsimple loop stabilization design. It has high efficiency: 96% for buckmode, 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