Wide Band High PSRR LDO Voltage Regulator

Laxmi Koutanali, Sujata S Kotabagi, Ritu Ramesh Vernekar, Vijeta D Chitragar, Prajwal Sangalad

2025

Abstract

The design and implementation of Low Dropout Voltage Regulators (LDOs) play a critical role in the power management of modern electronic systems. LDOs are particularly important in low-voltage and noise-sensitive applications, such as portable devices, RF circuits, and automotive electronics. This paper presents a Wide Band High Power Supply Rejection Ratio (PSRR) LDO, designed using UMC 180nm CMOS technology, operating at an input voltage of 1.4V and delivering a stable output of 1+/-0.66%V. The LDO achieves superior performance, with line regulation of 1.07 V/V, load regulation of 16.33 mV / A and a PSRR of -55.82 dB at 1 MHz and the layout design at 274.29 μm×40.2μm (0.011026 mm2), the LDO arrangement is ideal for both power and signal integrity. Simulation results confirm the LDO’s robustness in minimizing voltage spikes, ensuring stable operation under dynamic load conditions. The high PSRR and low noise characteristics make this LDO design ideal for sensitive analog and RF circuits, where power supply fluctuations can significantly impact performance.

Paper Citation

in Harvard Style

Koutanali L., S Kotabagi S., Ramesh Vernekar R., D Chitragar V. and Sangalad P. (2025). Wide Band High PSRR LDO Voltage Regulator. In Proceedings of the 3rd International Conference on Futuristic Technology - Volume 3: INCOFT; ISBN 978-989-758-763-4, SciTePress, pages 12-18. DOI: 10.5220/0013607900004664

in Bibtex Style

@conference{incoft25,
author={Laxmi Koutanali and Sujata S Kotabagi and Ritu Ramesh Vernekar and Vijeta D Chitragar and Prajwal Sangalad},
title={Wide Band High PSRR LDO Voltage Regulator},
booktitle={Proceedings of the 3rd International Conference on Futuristic Technology - Volume 3: INCOFT},
year={2025},
pages={12-18},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013607900004664},
isbn={978-989-758-763-4},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 3rd International Conference on Futuristic Technology - Volume 3: INCOFT
TI - Wide Band High PSRR LDO Voltage Regulator
SN - 978-989-758-763-4
AU - Koutanali L.
AU - S Kotabagi S.
AU - Ramesh Vernekar R.
AU - D Chitragar V.
AU - Sangalad P.
PY - 2025
SP - 12
EP - 18
DO - 10.5220/0013607900004664
PB - SciTePress