But apparently all is still well. With the wasteful linear regulator gone a pair of 5v and 3.3V switch regulators inject voltage through the GPIO header. Initial tests show a savings of around 25% ...
[Alex Eisenhut] needed to replace some old TO-3 voltage regulators and ... especially the LM340 5V regulator which was, of course, a linear regulator. Today, you are more likely to see a 7805 ...
The LDO IP is a 1.2V low-quiescent-current adjustable output voltage Low-Drop-Out (LDO) Linear Regulator implemented in the TSMC 3nm N3P CMOS process technology. Its low sleep current, 250 mA ... A 5V ...
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