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LED 驱动器

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身为领先的电源管理专家,立锜科技为LED应用提供完整的方案,其产品包括隔离式和非隔离式AC/DC、MR16、DC/DC、线性驱动器等多种类型,还有针对某些特殊应用如闪光灯、显示系统背光的LED驱动产品。

结合高效率、精确的电流调节、高功率因数、低谐波失真和低组件成本的产品优势,在这成本波动敏感的市场环境中,立锜科技总是你的最佳设计伙伴。

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Topology:
Topology:
Topology:
MOSFET Integrated:
MOSFET Integrated:
MOSFET Integrated:
Application:
Isolation:
Dimmable:
Dimming:
Dimming:
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The following is a list of products released in the last

Part NumberDescriptionShareDatasheetFree Sample
RT8532A6-String 43V White LED Driver with Boost Regulator Not available
RT7331SSecond-Stage Primary-Side Regulation Dimmable LED Driver Controller Not available
RT7339PActive-PFC Constant-Voltage Controller with Primary-Side Regulation Not available
RT7331Primary-Side Regulation Dimmable LED Driver Controller with Active-PFC Not available
RT8406可调光高压Buck LED驱动器 Not available
RT7315ALED照明闪烁抑制器 Not available
RT7306S原边调节可调光LED驱动器二级控制器 Not available
RT84201.2A, 滞回式, 具有内部开关的高亮度LED驱动器 Not available
RT9285B内置二极管升压型 LED 定电流驱动器 Not available
RT8413高功率因素, 切相调光上桥降压 LED 驱动器 Not available

Technical Document Image Preview
LED 驱动器的基本结构

LED 驱动器

LED 驱动器提供恒流输出而非稳定的电压,因为 LED 需要的是特定的恒定电流来产生稳定的亮度。一般高亮度白光 LED 的顺向电压 VF 落在3V~3.5V之间,根据输入电压和 LED 串上的 LED 数量的不同,驱动LED时可能需要进行降压转换、升压转换或升/降压转换 (例如要在多种不同数目的 LED 串间切换的应用),要驱动背光模块里的大量 LED 则需要能驱动多串 LED 的驱动器,有些离线式的 LED 驱动器还会采用线性拓朴。多数 LED 驱动器都会内建调光功能,它们可透过对输出电流的调节来改变 LED 的亮度。

挑选 LED 驱动器时要考虑的关键参数包括输入电压LED 串电压 LED 串电流、单串或多串 LED 及是否有调光需求。在利用交流电供电的 LED 应用中,还必须考虑是否要采用隔离式架构,并将功率因数及总谐波失真的法规要求考虑进去。

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Technical Documents
TitleLast UpdateShareDownload
LED 照明电源方案选择指南2018/11/15
穿戴式应用中的电源管理器件2018/11/15
车用产品选择指南2018/11/15
锂离子电池供电应用的电源管理器件2018/11/15
工业、 汽车和LED照明应用的宽输入电压范围DC/DC电源转换方案2018/11/01
LED Backlight System and Power Solutions2018/10/30
电源IC输入端的过应力分析2016/11/17
全兼容不闪烁MR16 LED驱动器的原理、实现与应用2016/07/07
应用于LED照明之单级高功因反激式转换器2016/06/21
基于锂离子电池的应用设计2016/04/08
消除在LED照明应用中的光闪烁2016/04/08
初级侧调节 (PSR) LED 驱动器 RT7302 与 RT7304 之设计指南2016/04/08
Programmable Dual LDO Output Voltage and WLED Current with I2C Interface2016/04/08
Evaluation Boards
TitleLast UpdateShareDownload
RT4531 Evaluation Board2017/12/04
Asynchronous Boost Converter for 10 WLEDs2017/09/04
RT4532 Evaluation Board2017/09/04
RT8498 Step-Down Converter Evaluation Board2017/07/26
RT7306 Evaluation Board2017/07/26
Low cost smart lighting EVB with RF module2017/07/26
RT8497C LED Driver Controller for High Power Factor Applications Evaluation Board2017/07/14
RT8487 High Efficiency BCM LED Driver Controller for High Power Factor Applications2016/09/14
RT7310 Triac Dimming Bulb (180-264Vac, 75Vout, 180mA)2016/09/08
RT7310 Triac Dimming Bulb (90-132Vac, 75Vout, 180mA)2016/09/08
RT7310 Triac Dimming Bulb (90-132Vac, 72Vout, 120mA)2016/09/08
RT7302 Flyback T8 18W2016/09/08
RT8497AGS Power MOSFET Integrated High Efficiency BCM LED Driver Controller for High Power Factor Applications2016/05/09
Power MOSFET Integrated High Efficiency BCM LED Driver Controller for High Power Factor Applications2016/02/18
High Voltage High Current LED Driver Controller for Buck, Boost or Buck-Boost Topology2015/12/10
RT7304 Flyback Bulb 60Vout 130mA2015/10/21
RT7304 Flyback Bulb 45Vout 178mA2015/10/21
RT7304 Buck-boost Bulb 8W2015/10/21
RT7304 Buck-boost Edge T8 16W2015/10/21
RT8555WSC Evaluation Board2015/09/21
Additional Documents
Title Last Update ShareDownload
AC/DC Non-Isolated BCM Floating Buck LED Driver Controller - RT8487, RT8497 2019/03/04
Non-isolated LED Lighting Driver IC Performance Test Report - RT8487, RT8497 2019/03/04
Offline Linear LED Drivers & Application Example - RT7320, RT7321, RT7322 2019/03/04
Two-Stage MR16/AR111 LED Driver Solutions with Excellent Transformer Compatibility - RT8476, RT8479 2019/03/04
AC/DC Isolated PSR Flyback Controllers for high Power Factor and low THD - RT7302, RT7304 2019/03/04
低成本LED照明电源解决方案 AC/DC非隔离高功因降压/升降压LED驱动IC RT8487/RT8497 2019/03/04
高功因无频闪智能调光驱动方案 RT7300+RT8474/RT8477 2019/03/04
高功因 高电子变压器兼容性的MR16/AR111方案 RT8476/RT8479 2019/03/04
高性能AC/DC 隔离式PSR/非隔离Buck-BoostLED驱动IC RT7302/RT7304 2019/03/04
Videos
TitleLast UpdateShareViews
为应用选择最适合的电源管理组件2014/10/28 141
立錡科技 LED 照明电源解决方案2014/02/26 454
Design Tool
TitleLast UpdateShare
RT7313 Flyback Design Tool 2019/04/16
RT8458D Design tool (CCM)2019/04/16
RT8458E Design tool2019/04/16
RT8462 Design tool2019/04/16
RT8487 Design tool2019/04/16
RT8458A DC/CC Design tool (CCM)2019/04/16
RT8458A Design tool2019/04/16
RT8458D Deign tool (BCM)2019/04/16
RT7304 Flyback Design Tool 2019/04/16
RT7302 Flyback Design Tool 2019/04/16
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