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A design of a high PSRR capacitor-less low dropout voltage regulator (LDO) is presented. This circuit is stable for full load current range from 0 to 100mA. A mid frequency zero has been introduced to stabilize the loop. The PSRR achieved was -71.258dB at 130kHz, and more than -40dB upto 650.750kHz. The LDO is capable of generating fixed 1V from a supply of 3.0V which on discharging goes to 1.5V....
This paper presents a low-dropout (LDO) linear regulator using ultra-low output resistance buffer for frequency compensation. The proposed buffer achieves ultra low output impedance with dual shunt feedback loops, which makes it possible to improve load and line regulations as well as the transient response for low voltage applications. A reference control scheme for programmable output voltage of...
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