#863 ME2108 Boost Converter Module
A micro boost converter module based on the ME2108 IC, with a fixed 5V output from operating input range of 0.9V~6.5V.
Notes
These modules are built around the Micro One ME2108 step-up DC/DC converter from Nanjing Micro One Electronics Inc. 版权所有.南京微盟电子有限公司.
Specifically, they use the ME2108A/50 in SOT-89-3 packaging with 5.0V output and an operating input range of 0.9V~6.5V.
| PIN | NAME | FUNCTION |
|---|---|---|
| 1 | Vss | Ground |
| 2 | Vout | Output voltage monitor, IC internal power supply |
| 3 | Lx | Switch |
The module implements the standard circuit using internal transistor as described in the datasheet:
Components:
- ME2108A/50 step-up DC/DC converter
- 220µH inductor
- SS14 - 1N5820 Small Signal Schottky Diode
- 5µF + 3µF capacitors? I haven’t measured the values
First Tests
It works just fine with 2x AAA batteries. Here’s a quick test on a breadboard:
As the ME2108 has an input range of 0.9V~6.5V, it also works with a single AAA battery, though the output regulation is down a little:
Credits and References
- “0.9-5V To 5V DC-DC Step-Up Power Module Voltage Boost Converter Board 1.5V 1.8V 2.5V 3V 3.3V 3.7V 4.2V To 5V” (aliexpress seller listing)
- Purchased for SG$1.74 including tax for 5 pieces (Nov-2024)
- Nanjing Micro One NB: currently served with an expired and invalid SSL certificate