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首页 > Products > Led Driver > Non isolated LED Driver > Non Isolated High Efficiency Step-down Dimming >Cxle83155 is a high power factor step-down LED driver chip. Working in quasi resonant mode (QRM), the stress of current and voltage is greatly reduced, and the efficiency
Cxle83155 is a high power factor step-down LED driver chip. Working in quasi resonant mode (QRM), the stress of current and voltage is greatly reduced, and the efficiency

The quasi full cycle detection is used to detect the output current of LED, which ensures the accuracy of the output current of LED. Cxle83155 can adjust LED current by decoding PWM signal and analog signal, so as to realize intelligent dimming. High accuracy and consistency of LED current is achieved by internal fine-tuning decoder. In particular, when the dimming level is low, the PWM control method seamlessly changes from quasi resonant mode to pulse frequency modulation mode (PFM), thus ensuring a small output current and low switching loss. In addition, the cxle83155 implements various protection functions, including LED open circuit protection (OVP), cycle by cycle overcurrent protection (OCP), led short circuit protection (SCP) and over temperature compensation, etc., to ensure the reliable operation of the system.

Cxle83155 is a high power factor step-down LED driver chip. Working in quasi resonant mode (QRM), the stress of current and voltage is greatly reduced, and the efficiency
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1.产品概述       2.产品特点     Vgj嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)Vgj嘉泰姆

5.产品封装       6.电路原理图  Vgj嘉泰姆

7.相关产品Vgj嘉泰姆

   产品概述 返回TOPVgj嘉泰姆


        CXLE83155 是一款高功率因数降压型LED驱动芯片。 工作在准谐振模式(QRM),大大降低了电流和电压的应力,同时使效率和抗电磁干扰的性能都得到 提升。利用准全周期检测对LED输出电流进行检测,确保了 LED 输出电流的 精度。 CXLE83155 通过解码 PWM 信号和模拟信号实现调节 LED 电流,从而实现智能调光。通过内部微调解 码器实现 LED 电流的高精度和一致性。尤其在调 光等级较低时,PWM 控制方法从准谐振模式无缝 地转入脉冲频率调制模式(PFM),从而保证了较 小的输出电流和低开关损耗。 另外,CXLE83155时实现了各种保护功能,包括LED 开路保护(OVP)、逐周期过流保护(OCP)、LED 短路保护(SCP)和过温补偿等,以确保系统可靠地 工作。

   产品特点 返回TOPVgj嘉泰姆


• 单级有源功率因数校正 (PFC > 0.90) Vgj嘉泰姆

• LED 电流精度高 (±3%) Vgj嘉泰姆

• 优异的线性调整度和负载调整度(±2%) Vgj嘉泰姆

• 准谐振工作模式 (QRM) Vgj嘉泰姆

• 多重保护机制 Vgj嘉泰姆

• PWM 调光(100:1)和模拟电平调光 Vgj嘉泰姆

• 封装: SOP8Vgj嘉泰姆

   应用范围 返回TOPVgj嘉泰姆


• 调光照明应用 Vgj嘉泰姆

• 2.4G/BLE/ZigBee遥控智能LED灯 Vgj嘉泰姆

• 其它 LED 灯应用Vgj嘉泰姆

   技术规格书(产品PDF) 返回TOP Vgj嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持!Vgj嘉泰姆

 QQ截图20160419174301.jpgVgj嘉泰姆

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