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Rechargeable and dimmable LED driver

Overview

- LED boost driver
- Use SGM3732 chip
- 4 0.5W white LEDs in series
- Lithium-ion battery/USB power supply
- Battery charging uses TP4065 chip
- Battery/USB power supply switching uses MOS+SBD solution
- PWM dimming and Battery power
- Use the EC12 rotary encoder to adjust the LED brightness
- Use the microcontroller ADC to detect the battery voltage, the indicator light flashes when the battery is low, and then enters the ultra-low power consumption mode
- The microcontroller program is developed using the HAL library, see the attachment MCU.zip for details
- None Reserved serial port/OLED and other debugging methods can only be debugged through the reserved SWD port
- most components can be purchased at taobao Uxin Electronics, pay special attention to the following components:
- USB TypeC female socket https://item.taobao. com/item.htm?spm=a1z09.2.0.0.707c2e8dFj70gX&id=591211481748&_u=urhang6cd97
- 0.5W LED https://item.taobao.com/item.htm?spm=a1z10.3-cs.w4002-24706531953.14 .47096a4b8FMpgF&id= 544523520168

Design Files

MCU.zip

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Update:2025-08-09 11:01:20

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