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A 54-nA Quiescent Current Capless LDO With -39 dB PSRR at 1 MHz Using a Load-Tracking Bandwidth Extension Technique
- Authors
- Kim, Taehyun; Kim, Byeongik; Roh, Jeongjin
- Issue Date
- Mar-2024
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Bandwidth; capacitor-less LDO; Capacitors; Circuit stability; Feedforward systems; Low-dropout regulator (LDO); low-quiescent current; power supply rejection ratio (PSRR); Thermal stability; Transient analysis; Transistors
- Citation
- IEEE Transactions on Circuits and Systems II: Express Briefs, v.71, no.3, pp 1 - 5
- Pages
- 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Transactions on Circuits and Systems II: Express Briefs
- Volume
- 71
- Number
- 3
- Start Page
- 1
- End Page
- 5
- ISSN
- 1549-7747
1558-3791
- Abstract
- This paper presents a low-dropout regulator (LDO) with wide bandwidth and low quiescent current. The proposed LDO includes a load-tracking fast feedforward path for bandwidth extension and light load driving capability. The proposed technique allows for a wide bandwidth of 38.5 MHz with a small 400 fF compensation capacitor, and a quiescent current of 54 nA. The chip was fabricated using a 180-nm process with an active area of 0.0074 mm. Because of the wide 38.5 MHz bandwidth at 10 mA, the power supply rejection ratio was -39 dB at 1 MHz and -24.5 dB at 10 MHz, with a 0.084 fs figure of merit. IEEE
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Related Researcher
- Roh, Jeong jin
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)