Datasheet

MikroElektronika
Battery Boost Shield
The Battery Boost Shield is step-up DC-DC converter for battery powered devices such as Mikroelektronika’s mikroMMB
boards (mikroMMB for PIC32, mikroMMB for dsPIC33, mikroMMB for PIC24, mikroMMB for PIC18F...)
Key features:
- Two AAA 1,5V battery holders;
- Output voltage 4V DC;
- Output current ~300mA
Figure 1: Battery Boost Shield
How to use the board?
First thing you need to do is to place two 1.5V AAA batteries in to the battery holders. Instead of AAA batteries you
can use other DC power supply source in range between 0.65V and 4V DC which is connected via pads marked with
INPUT. Pad marked with “+” is used for positive voltage connection and pad marked with “-” is used for GND. When
batteries are inserted additional board will start step-up DC-DC voltage conversion. To use converted voltage connect
positive input of powered device with pad marked with OUT and GND with pad marked with GND. To power up powered
device place jumper J1 on Battery Boost.
To connect Battery Boost Shield with mikroMMB board it is necessary to solder supplied headers to appropriate pads
on Battery Boost Shield and mikroMMB board, Figure 2 (A and B).