FP7171

FP7171 Universal High Brightness LED Driver General Description The FP7171 is an open loop, current mode, control LED driver IC. The FP7171 can be programmed to operate in either a constant frequency or constant off-time mode. It includes an 15 450V linear regulator which allows it to work from a wide range of input voltages without the need for an external low voltage supply. The FP7171 includes a PWM dimming and 0 - 250mV linear dimming input which can be used for linear dimming of the LED current. The FP7171 is ideally suited for buck LED drivers. Since the FP7171 operates in open loop current mode control, the controller achieves good output current regulation without the need for any loop compensation. Features  Switch mode controller for single switch LED drivers  Enhanced drop-in replacement to the FP7171  Open loop peak current controller  Internal 15 to 450V linear regulator  Constant frequency or constant off-time operation  Linear and PWM dimming capability  Requires few external components for operation Applications  DC/DC or AC/DC LED driver applications  RGB backlighting LED driver  Back lighting of flat panel displays  General purpose constant current source  Signage and decorative LED lighting  Chargers Typical Application Circuit VIN VIN RT Linear Dimming FP7171 CS LD GND VDD GATE PWMD PWM Dimming This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No...