MT7282

Maximizing IC Performance MT7282 Boost/Buck-Boost/Buck White LED Driver With High Frequency PWM Dimming DESCRIPTION The MT7282 is a constant current white LED driver designed for wide input voltage range from 2.5V to 40V system rail. The MT7282 can be configured as Buck, Boost and Buck-Boost topology. The MT7282 drives up to 10W with AC12V/DC12V input voltage. Current mode and fixed frequency operation provides fast transient response and eases loop stabilization. With a current sense amplifier threshold of 205mV, the LED current is programmable with one external current sense resistor and the power loss is minimized. The 450kHz operating frequency minimizes external inductor, input and output capacitor. The MT7282 supports both PWM and analog dimming by a single control pin. Fault condition protection includes over voltage protection(OVP), cycle-by-cycle peak current limiting and thermal shutdown. The MT7282 is available in ESOP8 packages. FEATURES  2.5V to 40V input/output volt...