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LED 驅動器

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身為電源管理的領先專家,立錡科技為LED燈具提供完整的方案,包括隔離和非隔離式AC/DC、MR16、DC/DC、線性方案及白色背光LED驅動器等五大類型,亦有針對閃光燈、顯示系統背光等其他特殊應用的LED驅動產品。

結合高效率、精確的電流調節、高功率因數、低諧波失真和低元件成本的產品優勢,在這成本波動敏感的市場環境中,立錡科技將是你的最佳設計夥伴。

產品線

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可調光高壓Buck LED驅動器 Not available
RT7315ALED照明閃爍抑制器 Not available
RT7306S原邊調節可調光LED驅動器二級控制器 Not available
RT84201.2A, 滯回式, 具有內部開關的高亮度LED驅動器 Not available
RT9285B內置二極體升壓型 LED 定電流驅動器 Not available
RT8413高功率因素, 切相調光上橋降壓 LED 驅動器 Not available

Technical Document Image Preview
基本 LED 驅動器

LED 驅動器

LED 驅動器提供恆流輸出,而非穩壓輸出。因為 LED 需要的是特定的恆定電流來產生穩定的亮度。一般高亮度 LED 的順向電壓 VF 落在3~3.5V之間。基於輸入電壓和 LED 串上的 LED 總數,LED 驅動時可能需要降壓轉換、升壓轉換或升/降壓轉換 (例如要在多種不同數目的 LED 串間切換的應用)。而背光模組裡的大需量 LED 則須要能驅動多串 LED 的 LED Driver。有些離線式的 LED 驅動器採用線性拓樸。多數 LED 驅動器也內建調光功能,透過對輸出電流的控制來決定 LED 的亮度。

挑選 LED 驅動器的關鍵參數包括輸入電壓LED 串電壓LED 串電流,單串或多串 LED 及是否有調光需求。

透過交流電驅動的 LED 應用中,也必須考慮是否要採用隔離式架構、以及 LED 對於功率因數 THD 規範的法規要求。

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Technical Documents
TitleLast UpdateShareDownload
LED 照明電源方案選擇指南2018/11/22
車用產品選擇指南2018/11/15
穿戴式應用電源管理 IC 選擇指南2018/11/15
鋰離子電池供電應用的電源管理器件2018/11/15
工業、 汽車和LED照明應用的寬輸入電壓範圍DC/DC電源轉換方案2018/11/01
離線返馳轉換器設計重點2018/10/30
LED背光系統與電源解決方案2018/10/30
Designing Applications with Lithium-Ion Batteries2018/10/30
電荷幫浦轉換器與升壓轉換器應用於驅動手機白光LED2016/08/15
電源IC輸入端的過應力分析2016/07/28
消除在LED照明應用中的光閃爍2016/07/07
初級側調節 (PSR) LED 驅動器 RT7302與RT7304 之設計指南2016/07/07
應用於LED照明之單級高功因返馳式轉換器2016/06/21
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 Applications2016/09/21
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
為應用選擇最適合的電源管理組件
2014/10/28 90
T8, E17, E27, MR16, Linear 線性 LED 驅動晶片 - 立錡科技 LED 照明電源解決方案2014/02/26 261
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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