HV9910Q8

CYStech Electronics Corp. Universal High Brightness LED Driver Spec. No. : C194Q8 Issued Date : 2013.05.31 Revised Date : Page No. : 1/7 HV9910Q8 Features >90% efficiency 10V to 600V input range Constant current LED driver Applications from a few mA to more than 1A output LED string from one to hundreds of diodes Linear and PWM dimming capability Input voltage surge ratings up to 600V Over temperature protection Applications DC/DC or AC/DC LED driver applications RGB backlighting LED driver Backlighting of flat panel displays General-purpose constant current source Signage and decorative LED lighting Automotive Chargers Description The HV9910Q8 is a PWM high-efficiency LED driver control IC. It allows efficient operation of high-brightness (HB) LEDs from voltage sources ranging from 10VDC up to 600VDC. The HV9910Q8 controls an external MOSFET at fixed switching frequencies up to 300kHz. The frequency can be programmed using a single resistor. The LED string is driven at a constant current rather than a constant voltage, thus providing a constant light output and an enhanced reliability. The output current can be programmed between a few milliamps and up to more than 1A. The HV9910Q8 uses a rugged high-voltage junction isolated process that can withstand an input voltage surge up to 600V. The output current to a LED string can be programmed to any value between zero and its maximum value by applying an external control voltage at the linear di...