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A Linear CMOS Low Drop-Out Voltage Regulator in a 0.6μm CMOS Technology

Mohammad Maadi
Middle East Technical University, Department of Electrical and Electronics Engineering, Ankara, Turkey
Abstract—In most of integrated circuits, especially in Analog/Digital mixed ICs, low dropout voltage regulators are needed to provide a robust, reliable and capable voltage supply. In this paper, a very low dropout and adjustable voltage regulator design in a 0.6μm CMOS technology is presented. Along with theoretical background, design steps, building blocks and simulation results were explained. Our designed voltage regulator works with 8V supply voltage and can give 3V-5V user selectable output voltage with 50 mA load current capability. Output dropout is 0.5mV for maximum load. For temperature range of -40C0 to 85C0, output change is less than 5mV, and for a +/-10% supply change, output change is less than 0.02mV.
 
Index Terms—low dropout (LDO) voltage regulator, bandgap reference, opamp, analog integrated circuit

Cite: Mohammad Maadi, "A Linear CMOS Low Drop-Out Voltage Regulator in a 0.6μm CMOS Technology," International Journal of Electronics and Electrical Engineering, Vol. 3, No. 3, pp. 191-196, June 2015. doi: 10.12720/ijeee.3.3.191-196
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