PT4115 2A (or More) Dimmable LED Driver

Eagle schematic and single sided board for PT4115 (SOT-89) based constant current LED driver with external MOFSET and 555 PWM dimmer controller.

Step 1: Schematic

Datasheets:

PT4115

MAX4226

Mosfet

LMC555

Where to get (some) parts:

PT4115 - ebay

Mosfet - ebay

MAX4226 - free sample

LMC555 - free sample

Rsense & Inductor - free sample

2-pin PCB connector - ebay

3-pin PCB connector - ebay

Step 2: Stencil - 1200 DPI

https://www.instructables.com/id/DIY-Stencil-for-PCBs/

Step 3: Board - 1200 DPI

https://www.instructables.com/id/PCB-making-guide/

https://www.instructables.com/id/Cheap-and-Easy-Toner-Transfer-for-PCB-Making/

Step 4: