Abstract
This paper presents a capacitor-free low dropout (LDO) linear regulator based on a new dual loop topology. The regulator utilizes the feedback loops to satisfy the challenges for hearing aid devices, which include fast transient performance and small voltage spikes under rapid load-current changes. The proposed design works without the need of an off-chip discrete capacitor connected at the output and operates with 0-100 pF capacitive load. The design has been implemented in a 0.18 µm CMOS process. The proposed regulator has a low component count and is suitable for system-on-chip integration. It regulates the output voltage at 0.9 V from 1.0 V - 1.4 V supply. A current step load from 250-500 µA with an edge time (rise and fall time) of 1 ns results at ∆Vout of 64 mV with a settling time of 3 µs when CL = 0. The power supply rejection ratio (PSRR) at 1 kHz is 63 dB.
Original language | English |
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Title of host publication | Proceedings of 2016 IEEE NorCAS Conference |
Number of pages | 5 |
Publisher | IEEE |
Publication date | 2016 |
ISBN (Print) | 978-1-5090-1095-0 |
DOIs | |
Publication status | Published - 2016 |
Event | 2016 IEEE Nordic Circuits and Systems Conference - Copenhagen, Denmark Duration: 1 Nov 2016 → 2 Nov 2016 Conference number: 2 https://ieeexplore.ieee.org/xpl/conhome/7784514/proceeding |
Conference
Conference | 2016 IEEE Nordic Circuits and Systems Conference |
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Number | 2 |
Country/Territory | Denmark |
City | Copenhagen |
Period | 01/11/2016 → 02/11/2016 |
Internet address |