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A voltage-adjustable output-capacitorless LDO regulator with split-length current mirror compensation and overshoot/undershoot reduction

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Abstract

An output-capacitorless low-dropout regulator (OCL-LDO) using split-length current mirror compensation and overshoot/undershoot reduction circuit are presented in this paper. At a supply of 1.5 V and a quiescent current of 8.2 µA, the proposed scheme can support a maximum load current of 50 mA. The proposed OCL-LDO has a range of output voltage from 0.8 to 1.25 V with 1.5 V supply. The proposed regulator is designed and post-simulated by UMC 55-nm standard CMOS process. The simulation results show that the proposed scheme is stable in different temperatures and process corners with 10 pF output capacitor. The maximum value of overshoot and undershoot is 69.0 mV and 91.5 mV, respectively.

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Authors and Affiliations

  1. Shaanxi Key Laboratory of Integrated Circuits and Systems, School of Microelectronics, Xidian University, 2 Taibai Road, Xi’an, 710071, People’s Republic of China

    Kui Wen, Shubin Liu & Yongyuan Li

Authors
  1. Kui Wen
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  2. Shubin Liu
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  3. Yongyuan Li
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Correspondence to Yongyuan Li.

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Wen, K., Liu, S. & Li, Y. A voltage-adjustable output-capacitorless LDO regulator with split-length current mirror compensation and overshoot/undershoot reduction. Analog Integr Circ Sig Process 105, 459–470 (2020). https://doi.org/10.1007/s10470-020-01698-7

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  • DOI: https://doi.org/10.1007/s10470-020-01698-7

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