Lowe, Hauptman & Ham
Device for controlling current of LED
Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor.
Samsung Electro-Mechanics Co., Ltd.
H Y H
H05B Y02B H05B
inventional additional inventional
Jae Shin Jung Hyun Bo Hyun Jung Sun Seung Kon Joon Youp
Lee Kim Hwang Kwon Kong Sung