OnSemiNCL3005160WLED驅(qū)動(dòng)解決方案
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LED驅(qū)動(dòng)器應(yīng)用,可調(diào)整關(guān)斷時(shí)間,源250mA/沉500mA峰值驅(qū)動(dòng)能力, 25°C時(shí)的電流檢測精度±3.2%,3.3V電平調(diào)光輸入,具有熱關(guān)斷,過流保護(hù)和最大開態(tài)時(shí)間保護(hù),主要用于LCD屏的LED背光驅(qū)動(dòng)器,LED條燈,LED街燈和LED燈泡.本文介紹了NCL30051主要特性,方框圖, 典型應(yīng)用電路圖, 輸入80V 350mA輸出的降壓LED驅(qū)動(dòng)器評估板NCL30105GEVB電路圖,材料清單和PCB布局圖.
本文引用地址：http://www.chinabohe.com/article/186016.htmNCL30051主要特性:
• Constant Off Time Current−Mode Control Operation
• Adjustable Off Time (0.5 [1]s to 10 [1]s)
• Internal Leading Edge Blanking
• Source 250 mA / Sink 500 mA Peak Drive Capability
• ±3.2% Current Sense Accuracy at 25℃• Internal Startup Delay
• 3.3 V Logic Level Dimming Input
• This is a Pb−Free Device
NCL30051安全特性:
• Thermal Shutdown
• Maximum On Time Protection
• Overcurrent Protection
NCL30051典型應(yīng)用:
• LED Backlight Drivers for LCD Panels
• LED Light Bars
• LED Street Lighting
• LED Bulbs
圖1.NCL30051方框圖
圖2.NCL30051典型應(yīng)用框圖
圖3.NCL30051典型應(yīng)用電路圖
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