| Summary: | 碩士 === 中原大學 === 生物醫學工程研究所 === 100 === With the progress of technology, the demand of portable electronic devices are increasing. In order to provide an operation voltage for the internal subsystems of the portable electronic devices, the conversion of the power regulator IC are required. Based on different power specifications of the subsystems required, causing excessive power consumption, the internal temperature rising, lower conversion efficiency, and then affecting the battery lifetime and reducing system standby time that will make the internal system can't be normal operation in portable electronic devices . Hence, the power consumption, power supply noise, stability, the chip area and conversion efficiency are especially important. This study proposed a low dropout regulators combined with a Wide-Range and high PSRR of the low temperature coefficient CMOS voltage reference circuit, that achieved low power, as well as high PSRR and system stability in capacitor-free operation, so it is suitable for portable radio frequency system-on-chip in portable power management system. The total power consumption is 159uW, and the power-supply rejection ratio at 100 Hz and 10 kHz are 82.8 and 75.55dB, respectively. The whole circuit has been implemented in a TSMC 0.35μm Mixed Signal 2P4M Polycide 3.3V/5V technology, and the chip area is 1.0358×1.22975mm².
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