<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>To improve the whole characteristic of the LDO, a low quiescent current structure of high voltage LDO with self-regulation impedance buffer and bandgap amplifier is presented in this paper. With the bandgap amplifier proposed, the function of voltage reference and error amplifier can be achieved simultaneously, which can efficiently reduce the consumption. The load capacitor can be as small as 0.47<italic>µ</italic>F by using the self-regulation impedance buffer and current buffer compensation scheme. The LDO has been implemented in a 0.18 <italic>µ</italic>m process with die size 0.03 mm<sup>2</sup> . Without the load, the consumption quiescent current of the LDO is 1 <italic>µ</italic>A. Experimental result shows that the overshoot and undershoot of line transient response are less than 30 mV/V. The load regulation is about 0.1A, and line regulation is about 0.07 mV/V at no load condition.</p>
</abstract>

To improve the whole characteristic of the LDO, a low quiescent current structure of high voltage LDO with self-regulation impedance buffer and bandgap amplifier is presented in this paper. With the bandgap amplifier proposed, the function of voltage reference and error amplifier can be achieved simultaneously, which can efficiently reduce the consumption. The load capacitor can be as small as 0.47µF by using the self-regulation impedance buffer and current buffer compensation scheme. The LDO has been implemented in a 0.18 µm process with die size 0.03 mm2 . Without the load, the consumption quiescent current of the LDO is 1 µA. Experimental result shows that the overshoot and undershoot of line transient response are less than 30 mV/V. The load regulation is about 0.1A, and line regulation is about 0.07 mV/V at no load condition.

High voltage low quiescent current LDO with self-regulation impedance buffer

Xi’an University of Posts and Telecommunications

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"High voltage low quiescent current LDO with self-regulation impedance buffer"}

To improve the whole characteristic of the LDO, a low quiescent current structure of high voltage LDO with self-regulation impedance buffer and bandgap...

High voltage low quiescent current LDO with self-regulation impedance buffer

Published Online: May 08, 2023

Page range: 109 - 115

Received: Mar 27, 2023

DOI: https://doi.org/10.2478/jee-2023-0014

Keywords
LDO, self-regulation, buffer, bandgap, load capacitor

© 2023 Lei Tian et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

High voltage low quiescent current LDO with self-regulation impedance buffer

Published Online: May 08, 2023

Page range: 109 - 115

Received: Mar 27, 2023

DOI: https://doi.org/10.2478/jee-2023-0014

KeywordsLDO, self-regulation, buffer, bandgap, load capacitor

© 2023 Lei Tian et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
LDO, self-regulation, buffer, bandgap, load capacitor