GM9910B

GM9910B UNIVERAL HIGH BRIGHTNESS LED DRIVER Description The GM9910B is a PWM high efficiency control LED driver IC. It allows efficient operation of High Brightness (HB) LEDs from voltage sources ranging from 10VDC up to 500VDC, this feature allows GM9910B can work from a wide range of input voltages without the need for an external low voltage supply. By using a single resistor, the switching frequency to control the external MOSFET can be fixed up to 300KHz. GM9910B is constant current LED driver, which enhance the reliability. The output current can be programmed between a few milliamps and up to more than 1.0A. GM9910B uses a rugged high voltage junction isolated process that can withstand an input voltage surge of up to 500V. Output current to an LED string can be programmed to any value between zero and its maximum value by applying an external control voltage at the linear dimming control input of the GM9910B. The GM9910B provides a low-frequency PWM dimming input that can accept an external control signal with a duty ratio of 0-100% and a frequency of up to a few kilohertz. Features ‹ > 90% efficiency Wide input range – 10V to 500V Constant current LED driver Applications from a few mA to more than 1A LED string from one to hundreds of diodes PWM low frequency dimming via enable pin Input voltage surge rating up to 500V ‹ ‹ ‹ ‹ ‹ ‹ Applications „ „ AC/DC or DC/DC LED Driver Applications RGB Backlighting LED Driver „ „ Back Lighting of Flat Panel Displays Gener...