LDO design issue - no load condition | Forum for Electronics
Mar 27, 2019 · Hi I am working on a LDO design that requires a rather large PMOS pass transistor due to the specified max current. I have issues with pulling the pass transistor gate …
The size of pmos pass transistor in LDO regulator
May 12, 2006 · pmos pass transistor Hi, all I am designing a LDO regulator, the minimal power supply voltage is 4.75V, and the output voltage is 4.5V, the maximum output current is 20mA. …
Why PMOS used in LDO more than NMOS? | Forum for Electronics
Feb 2, 2005 · nmos ldo compensation but in Low Drop-Out Regulator, Pmos is used to achieve lower voltage drop. how can Pmos do that other than Nmos?it seems that lower Ron is not the …
LDO with NMOS as pass transistor.. | Forum for Electronics
Oct 18, 2004 · The NMOS pass transistor LDO is has a single pole roll-off characteristics.The gate of the NMOS pass transistor needs to be decoupled with capacitance to reduce the …
operating region of pass element in LDO - Forum for Electronics
Mar 8, 2012 · I am really confused. What is the operating region of pass element in LDO (Low Dropout Linear Regulator)? I see a lot of documents saying that it operates in linear mode. …
[SOLVED] - Input Power source selection for ESP32(LDO)
May 11, 2025 · I need Help in a circuit for power selection for esp32 i have 2 options 1)USB_C 5v 2)Battery 4.2V I need circuit in which USB is first priority mean if 5v...
Comparison of LDO and level shifter | Forum for Electronics
Jan 27, 2012 · Re: LDO vs Level shifter Yes, although if good efficiency and good noise performance were required, I would use a switcher to drop most of the voltage then use the …
How to measure psrr of LDO? | Forum for Electronics
Sep 24, 2008 · how to measure psrr hi,all. Can anybody suggest me how to measure psrr of LDO? Could anybody suggest the ways and the required instruments I need to use? Thanks a …
How to improve LDO's transient response? | Forum for Electronics
Apr 2, 2006 · ldo frequency and transient response Some commercial chips like TI's add comparators to control overshoot and undershoot. When undershoot is detected, sourcing …
PTAT current source vs LDO to bias a ring oscillator for PVT ...
Apr 22, 2024 · I'm looking to minimize the frequency variation of an on-chip ring oscillator running at 2MHz, through using either an LDO as its supply voltage, or current-starving it with a current …