I am working on a small pocket-sized headphone amp. It will be battery powered, but I have not decided on the battery. I was considering doing a lithium ion for its compactness and rechargeability.
Anyway, I don't see what the issue would be if I used a switching DC-DC regulator to step up the battery voltage, as long as it was operating at a frequency out of the range of human hearing. The IC that I have, a MAX642, operates at 40-60kHz or so. Anyone see any problems with doing this?
Anyway, I don't see what the issue would be if I used a switching DC-DC regulator to step up the battery voltage, as long as it was operating at a frequency out of the range of human hearing. The IC that I have, a MAX642, operates at 40-60kHz or so. Anyone see any problems with doing this?