Unfortunately, manufacturers of these OEM (Original Equipment Manufacturer) boards rarely publish official datasheets. This article compiles everything you need to know about the , including typical pinouts, common components, voltage configurations, and how to reverse-engineer your own diagram if the exact layout varies.
[Vin 12V] --- F1 (2A) --- C_in (470µF/25V) --- VIN (IC1: LM2596-5.0) | |--- C_ff (optional) | [GND] ----------------------------------- GND (IC1) IC1 (LM2596) pins: 1 - VIN (12V) 2 - OUTPUT (SW) 3 - GND 4 - FB (Feedback) 5 - ON/OFF (tied to GND = always on) wx-dc12003 schematic
VOUT+ --- R1 (3.3kΩ) --- FB (pin4) FB (pin4) --- R2 (1kΩ) --- GND including typical pinouts