Max8815 board
![](https://cdn.hackaday.io/images/281721641891945962.png)
Max8815 board is Step-up converter based on MAX8815.
The project is designed according to MAX8815 data sheet:
https://datasheets.maximintegrated.com/en/ds/MAX8815A.pdf
The circuit has the following features:
Input: 1.5V - 5V
Output: 5V fixed or 3.3V - 5V (adjustable).
The max output current depends on input voltage. the board goes into protection when the input current exceeds 1A
PCB production.
The board was made by PCBway.
![](https://cdn.hackaday.io/images/2627291641892948005.png)
I decided to order the pre-assembled PCB with the SMD components.
The result was excellent.
I greatly appreciated the assistance with continuous communication on the progress of the production.
![](https://cdn.hackaday.io/images/2431361641892901889.png)
![](https://cdn.hackaday.io/images/6027421641893275406.png)
Before shipping, they sent me photos of the product, to receive my "ok": this is very important!
Where to buy.
if you want to test this circuit, you can purchase the PCB pre-assembled with the smd components at the following link: https://www.pcbway.com/project/shareproject/MAX8815_step_up_converter_7f76c33b.html
It is possible to purchase only the PCB if you prefere
Instructions.
5V Fixed output:
- Set J3 shunt to "OFF" position
- Set J4 shunt to "Normal" position
- Set J5 shunt to "5v" position
- Connect Input power supply (range 1,5v - 5v)
- Set J3 shunt to "ON" position
- Check D1 led lights ON
- Connect the output load
![](https://cdn.hackaday.io/images/9403431641893341208.png)
Adjustable output:
- Set J3 shunt to "OFF" position
- Set J4 shunt to "Normal" position
- Set J5 shunt to "Adj" position
- Connect Input power supply (range 1,5v - 5v)
- Set J3 shunt to "ON" position
- Check D1 led lights ON
- Set the output voltage (from 3,3v to 5v) by RV1 potentiometer
![](https://cdn.hackaday.io/images/4488631641893377902.png)
![](https://cdn.hackaday.io/images/8475011641893403897.png)
Other settings:
By J4 shunt it is possible to set "FPWM" mode according to MAX8815 data sheet
Opensource development application.
The project was created using Kicad
![](https://cdn.hackaday.io/images/9479151641893554078.png)
Opensource Hardware certification.
Max8815 board has been certified as open source hardware by the Open Source Hardware Association, with the UID: IT000008.
![](https://cdn.hackaday.io/images/1009431642322237114.png)
License.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. https://creativecommons.org/licenses/by-sa/4.0/