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摘要
This paper proposes a compact programmable low dropout (LDO) regulator for an ultra-low voltage system-on-a-chip (SoC) using the voltage scaling technique. Two innovative design concepts were proposed: a programmable multi-level resistor array that can precisely tune the ratio of the feedback resistor divider; and a current limiter that limits a small static current flowing through the resistor network while reducing the occupied area. Experimental results show that the monotonic 50-step programmable output ranging from 0.3V to 0.8V is achieved, with an input of 1V and a maximum load current of 100 mA. The occupied area is only 0.017 mm(2).
- 出版日期2014
- 单位中国科学院电工研究所
