Low-Cost LED Dimmer using LM3578

This Low-cost LED dimer project includes two main parts, an LM3578 chip, and a MOSFET. The 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.

Connections

CN1: Pin 1 + Pin 2 = VCC and Pin 3 + Pin 4 = GND
CN2: Pin 1 + Pin 2 = VCC and Pin 3 + Pin 4 = -Load
PR1: Trimmer Potentiometer to adjust the LED Light Intensity

Features

Supply 12V DC
Load Up to 1Amp (1 to 10W – 12V LED)
Over Current Limit 1.1A
PWM Duty Cycle 0 to 80%
PWM Frequency 10Khz
On Board Power LED
PCB Dimensions 47.94 x 15.56mm

$8.00

Brand : dotfry

SKU : G185

Collection : Power Drivers

Availability : 1 In Stock Sold Out 1

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Connections

CN1: Pin 1 + Pin 2 = VCC and Pin 3 + Pin 4 = GND
CN2: Pin 1 + Pin 2 = VCC and Pin 3 + Pin 4 = -Load
PR1: Trimmer Potentiometer to adjust the LED Light Intensity

Features

Supply 12V DC
Load Up to 1Amp (1 to 10W – 12V LED)
Over Current Limit 1.1A
PWM Duty Cycle 0 to 80%
PWM Frequency 10Khz
On Board Power LED
PCB Dimensions 47.94 x 15.56mm

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