Design and implement of LED drive circuit chip with the controllable constant output current

作     者：李先锐 王松林 来新泉 李玉山 

作者机构：Institute of Circuit DesignXi'an University of Electronic Science and Technology School of Electronic EngineeringXi'an University of Electronic Science and Technology 

基　　金：supported by the National Natural Science Foundation of China(No. 60876023) 

出 版 物：《Optoelectronics Letters》 (光电子快报（英文版）)

年 卷 期：2009年第5卷第3期

页      码：186-189页

摘      要：Owing to the fact that the LED drive circuit must have constant output current control,we propose a controlled current driver with a high precision for the white light *** discrete constant current settings are available and may be selected at the supply voltage from 2.9 V to 4.4 V,which is up to 1 *** autozero transconductance amplifier is proposed,which effectively improves the precision,reduces the offset voltage and the *** variation in the ratio of the external resistor current to the LED load current is less than 2.3%,when the LED load current changes from 200 mA to 800 mA.

主 题 词：输出电流 驱动电路 LED 电路芯片 恒定 白光发光二极管 可控 设计 

学科分类：0808[工学-自动化类] 0809[工学-计算机类] 08[工学] 0805[工学-能源动力学] 0803[工学-仪器类] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1007/s11801-009-8188-6

馆 藏 号：203302315...