CXLE8449系列是LED照明离线控制器,使用PFM(脉冲频率调制)控制,具有功率因数改善功能。工作输入电压范围为85VAC至270VAC,电流在一次侧控制,无需使用光耦或二次侧控制电路。由于输入电压波动引起的LED电流波动和LED电压波动可以得到抑制,因此得到了稳定的LED照明电源。通过同步输入电流和输入电压,可以获得高功率因数和低THD,并且在DCM(间断电流模式)下工作,可以实现高效率。内部加速启动电路可使LED灯快速点亮。提供过电压保护、过电流保护、UVLO和热关机等保护功能,在LED开路/短路时保护LED照明
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[ CXLE8449 ]"
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7.相关产品
产品概述 返回TOP
The CXLE8449 series are LED lighting offline controllers that use PFM(Pulse Frequency Modulation) control and have a Power Factor improvement function. The operating input voltage range is 85VAC to 270VAC, and the current is controlled on the primary side without using a Opto-coupler or secondary side control circuit. Because LED current fluctuations caused by input voltage fluctuations and LED voltage fluctuations can be suppressed, a stable LED lighting power supply is obtained. A high Power Factor and low THD are attained by synchronizing the input current with the input voltage, and operation in DCM(Discontinuous Current Mode) makes it possible to achieve high efficiency. An internal acceleration startup circuit enables the LED lighting to illuminate quickly. Over Voltage Protection, Over Current Protection, UVLO and Thermal shutdown are provided as protective functions to protect the LED lighting in the event of LED Open/Short-circuiting.
产品特点 返回TOP
应用范围 返回TOP
・LED Bulb
・LED spot Light
・LED Tube
・Street Light
・Residential Lighting
・Other applications with LED Lighting
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产品封装图 返回TOP
电路原理图 返回TOP
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LED照明 |
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产品名称 |
特点 |
封装 |
输入电压 (V) |
最大输 出功率 (W) |
调光 |
绝缘/ 非绝缘 |
精度 (%) |
温度范围(℃) |
Offline Controller with Power Factor Correction |
SOP-8D |
85~270 |
50 |
- |
3 |
-40~+105 |
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AC/DC输入的条件下工作 |
SOT-25 SOT-26 |
100~120 220~240 |
25 |
PWM Analog |
非绝缘 |
±5 ±2.5 |
-40~+85 |