Other Parts Discussed in Thread: LP2980-ADJ Hello,
I need an Output Voltage of 5,8V (+- 70mV) out of a LP2980-ADJ. With the recommended 51.1k Resistor I don't get a good with the available resistors (I shouldn't use "new" resistor values because of…
When the ON/~OFF pin is set to OFF, is the output High-Z, ground, or undefined? I'd like to control the power to an OLED screen, and I believe I can avoid a control transistor if the output is High-Z.
Hello Nick,
The GND Pin was around 1V5
Looking at the LP2980 ADJ, it looks like, the internal band gap is a possible reason why the trick is not working.
There is something that goes wrong when GND is something else (Sink/Source current ???).
Best…
HI Jean,
The Bypass pin is the output of our bandgap reference. Adding a capacitor here reduces noise. Adding a zener would likely at leakage and may actually lower the output voltage.
I think something like the LP2980-ADJ would do a better job of properly…