I29ctfX

High-brightness, high-efficiency LED portable light with USB-A and Type-C ports

 
Overview
The LEDs are Seoul STW8C12C-E0, available on Taobao. Note the pin package shape.
The power chip is a PW2053
Type-C with a built-in board and cc pins. Before soldering, solder a 5.1k resistor between cc and GND.
The USB interface has a convenient soldering shape.
 
Actual product demonstration. ------------------------------------------------
Actual measurements: When R2=56k and R1=16k, soldering 40 LEDs yields approximately 2.8W.
When R2=56k and R1=15k, soldering 40 LEDs yields approximately 8W. Soldering 10 LEDs yields approximately 3W.
 
参考设计图片
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