{"product_id":"low-cost-led-dimmer-using-lm3578","title":"Low-Cost LED Dimmer using LM3578","description":"\u003cp\u003e\u003cspan\u003eThis Low-cost LED dimer project includes two main parts, an \u003c\/span\u003e\u003cstrong\u003eLM3578\u003c\/strong\u003e\u003cspan\u003e chip, and a \u003c\/span\u003e\u003cstrong\u003eMOSFET. \u003c\/strong\u003e\u003cspan\u003eThe LM3578 generates a PWM signal, and Q1 MOSFET helps to drive a high current LED. The project also includes current limit feature. Over current trigger point is set to 1.1A. LED intensity can be set using a board trimmer potentiometer. The compact and low-profile circuit occupies a very small area. PCB has the option to mount DIP8 IC or SOIC8 IC.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCN1: \u003c\/strong\u003ePin 1 + Pin 2 = VCC and Pin 3 + Pin 4 = GND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCN2: \u003c\/strong\u003ePin 1 + Pin 2 = VCC and Pin 3 + Pin 4 = -Load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePR1: \u003c\/strong\u003eTrimmer Potentiometer to adjust the LED Light Intensity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupply 12V DC\u003c\/li\u003e\n\u003cli\u003eLoad Up to 1Amp (1 to 10W – 12V LED)\u003c\/li\u003e\n\u003cli\u003eOver Current Limit 1.1A\u003c\/li\u003e\n\u003cli\u003ePWM Duty Cycle 0 to 80%\u003c\/li\u003e\n\u003cli\u003ePWM Frequency 10Khz\u003c\/li\u003e\n\u003cli\u003eOn Board Power LED\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 47.94 x 15.56mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47247357640876,"sku":"G185","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G185A.jpg?v=1789814853","url":"https:\/\/dotfry.com\/products\/low-cost-led-dimmer-using-lm3578","provider":"dotfry","version":"1.0","type":"link"}