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CMOS low dropout regulator with dynamic zero compensation
C.-L. Chen, W.-J. Huang and S.-I. Liu
The output capacitor and its equivalent series resistance (ESR) often
limit the stability of a conventional low dropout regulator (LDR). A
CMOS LDR with dynamic zero compensation is presented to tolerate
the wide range of the output capacitor and the ESR. The stability
constraints for the output capacitor with the ESR are derived. The
measured LDR is stable for the output capacitor 2nF–47uF with ESR
of 0.1–50 O. The maximum quiescent current of this LDR with a
bandgap reference is 43.2uA and its maximum output current is
150 mA for the output voltage of 1.8V. |
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eetop公众号
创芯大讲堂
创芯人才网
发表于 2008-10-30 23:09:08
