BM0550HV

BM0550HV Universal High Brightness LED Driver DESCRIPTION APPLICATIONS The BM0550HV is a high efficiency LED driver. It AC/DC or DC/DC LED driver applications operates in wide range input voltage from 10V up to Backlighting for flat panel displays 600V. The device drives an external MOSFET at a fixed General purpose constant current source frequency. The frequency is programmable up to Automotive 3280KHz with a single resistor. The dimming control for Chargers chip can be either PWM input or linear input. The LED string is driven at a constant current without the need for loop compensation. BM0550HV requires only few external components to achieve constant LED current making it ideas for low cost LED driver. The chip is available in SOP-8 package. FEATURES >90% efficiency 10V to 600V DC input range Constant current LED driver Linear and PWM dimming capability Internal thermal overload protection PIN CONFIGURATION(SOP-8) V+ F1 1A/250V TVR1 7D471 V- (AC-220V input) ...