1.5A Constant Current Regulator for LEDs

The project aims to produce a linear regulator for use with LEDs by providing a constant current of 1.5A.

The uses of high bright LEDs are covered in this project and like the other versions, many of them are using linear regulation circuits that top out at 350mA since they are highly inefficient. This project will provide other options on how to drive high power LEDs which can be used for strobes. Some parts of the project were designed using professional software and hardware but all aspects of the design could be done using open source products or some wire wrap and perf board.

The chip used contains some of the key features such as input voltage up to 40V, shutdown pin, overhead voltage less than 0.5V, LED disconnection diagnostic, output current up to 1.5A, and PWM dimming pin. A simple 5V at 20mA was added in this design to create a nearly identical pin-out as the Buck Puck version.

The wiring configuration is made as simple as possible using the connectivity of the schematic layout of the board. A heatsink should be used for continuously running the LEDs to dissipate heat.

Rest of the project