DIY Matorch MS6 Flashlight with 7135 Driver

If you're interested in flashlight modifications, take a look at this article. The Matorch MS6 small straight flashlight features a solid circuit chamber, aluminum reflector, and a 10W T6 LED. The driver uses a specialized chip with three brightness levels: 100%, 25%, and strobe mode. The PWM dimming frequency is set to 250Hz, and the current is limited by a 0.5Ω resistor.

The modification involves replacing the current-limiting resistor with a 47135 constant current driver. After the modification, the maximum current at the highest setting is 1.5A (0.384), and the low setting is 0.38A. With long periods of use, the temperature increase is about 40°C. The modification cost includes using the original dimming IC, 2 yuan for four 380mA 7135 chips, and one PNP transistor.

Original driver board:

Diameter: 17mm

You'll also need to apply solder paste and use a heating plate for soldering.

After soldering the components in place, apply thermal paste.

Finally, reassemble everything, and the modification is complete!