Rosenberg, Klein & Lee
LED control circuit and method
A LED control circuit and method determine the frequency and duty of a LED driving signal according to a swing control signal and a dimming control signal, respectively. Responsive to the swing control signal, a pulse edge generator generates a clock whose frequency is determined by the swing control signal. Responsive to the clock and the dimming control signal, a duty ratio controller generates the LED driving signal whose frequency is determined by the clock frequency and whose duty is determined by the dimming control signal.
Richtek Technology Corp.
Y H H
Y02B H05B H05B
additional inventional inventional
Jing-Meng
Liu