#824 MP2307DN 1.0V-17V Mini Buck Converter Module

A common MP2307DN-based buck converter module that is extremely small and convenient for relatively low-power requirements under 17V.

Notes

NB: see LEAP211 Buck Converter Modules for an overview of all the buck converter modules I have tried.

I purchased the “10pcs Mini-360 DC-DC Buck Converter Step Down Module 4.75-23V to 1-17V For Arduino 340KHz” (aliexpress seller listing) originally purchased as a lot of 10 for US$5.03/lot (May-2016).

The product is no longer available from the same seller, but the same item is “1/5/10Pcs Mini360 DC-DC Converter Step Down Power Supply Module 4.75-23V To 1-17V 340Khz Mini-360 Ultra-Small” (aliexpress seller listing) currently listed as a lot of 10 items for SG$5.22/lot (Jan-2026).

Board comprises:

• MP2307 monolithic buck converter with standard support circuits per datasheet recommendations
• pretty small package!

Circuit Design

In the test configuration, I have the buck converter adjusted to ~3V output, and two blue LEDs in parallel with the load. The LEDs have a forward voltage Vf of ~3V.

Designed with Fritzing: see MP2307Module1.fzz.

Performance

Quite impressive for the size. There’s no scope capture below because despite my best attempts, the output voltage remained flat as a board (no detectable ripples or spikes .. just the normal noise floor)

Credits and References

• “10pcs Mini-360 DC-DC Buck Converter Step Down Module 4.75-23V to 1-17V For Arduino 340KHz” (aliexpress seller listing)
  • Originally purchased as a lot of 10 for US$5.03/lot (May-2016).
  • No longer offered by this seller.
• “1/5/10Pcs Mini360 DC-DC Converter Step Down Power Supply Module 4.75-23V To 1-17V 340Khz Mini-360 Ultra-Small” (aliexpress seller listing)
  • Same product, currently listed as a lot of 10 items for SG$5.22/lot (Jan-2026).
• MP2307 datasheet