Super capacitor balancing boards

Hi Marius,

The absolute max current for the ALD balancing FETs is 80mA. I wouldn’t want to run this rate continuously, but it shouldn’t need to go anywhere near this level continuously. If you are in this realm, then you may as well go with resistors.

If you want better clamping characteristics using the ALD products, you can parallel them to increase the clamping capability. Additionally, they make another board which uses separate P-channel MOSFETs to amplify this clamping effect significantly – the SABMBOVP series boards. Unfortunately, we do not stock every version, but we do stock the SABMBOVP223, which has very low bypass current below 2.3V and very rapidly increases above 2.3V. Here’s the datasheet for these parts. For your application, the 2.5V would probably be the best choice, but we do not stock that one. However, you could use the information in the datasheet to make your own board using the 2.5V version.