| Citation: |
Liu Zhiming, Fu Zhongqian, Huang Lu, Xi Tianzuo. A 1.8 V LDO voltage regulator with foldback current limit and thermal protection[J]. Journal of Semiconductors, 2009, 30(8): 085007. doi: 10.1088/1674-4926/30/8/085007
****
Liu Z M, Fu Z Q, Huang L, Xi T Z. A 1.8 V LDO voltage regulator with foldback current limit and thermal protection[J]. J. Semicond., 2009, 30(8): 085007. doi: 10.1088/1674-4926/30/8/085007.
|
A 1.8 V LDO voltage regulator with foldback current limit and thermal protection
DOI: 10.1088/1674-4926/30/8/085007
-
Abstract
This paper introduces the design of a l.8 V low dropout voltage regulator (LDO) and a foldback current limit circuit which limits the output current to 3 mA when load over-current occurs. The LDO was implemented in a 0.18 µm CMOS technology. The measured result reveals that the LDO0s power supply rejection (PSR) is about −58 dB and –54 dB at 20 Hz and 1 kHz respectively, the response time is 4 µs and the quiescent current is 20 µA. The designed LDO regulator can work with a supply voltage down to 2.0 V with a drop-out voltage of 200 mV at a maximum load current of 240 mA. -
References
-
Proportional views
DownLoad: