It's a voltage inverter whilst also being low dropout voltage. This one can only go to +/-5v though. I think one benefit of LDOs beyond the low voltage dropout is they are pretty quiet. https://www.ti.com/lit/ds/symlink/lm27762.pdf?ts=1754545530510&ref_url=https%3A%2F%2Fwww.ti.com%2Fsitesearch%2Fen-us%2Fdocs%2Funiversalsearch.tsp%3FlangPref%3Den-US%26nr%3D45728%26searchTerm%3Dnegative+output
Stupid question number 245: bipolar power
- Thread starter LukeFRC
- Start date
drew.spriggs
Well-known member
No use whatsoever for a pedal - they're <5.5v in to +/-5v out and not even isolated.
This is for an industrial power supply.
Chuck D. Bones
Circuit Wizard
"LDO" traditionally referred to linear (non-switching) regulators. The "drop-out" voltage is the minimum difference between input and output voltage required for the regulator to meet spec. With 78xx & 79XX regs, the drop-out voltage is typically 3V, but can be less at lighter loads. This means that if you feed 17V to a 78L15, there is no guarantee that it will regulate. Refer to the datasheets for more details. LDO regs usually have a dropout voltage less than 500mV, typically as low as 150mV.
Since switching converter can step the voltage up or down, or even invert the polarity, the relationship between input and output voltage is more complicated. Unless the datasheet clearly spells out what they mean by LDO, then it's just a sales pitch.
Since switching converter can step the voltage up or down, or even invert the polarity, the relationship between input and output voltage is more complicated. Unless the datasheet clearly spells out what they mean by LDO, then it's just a sales pitch.