Title :
A CMOS Low-Dropout Regulator With New Compensation Method
Author_Institution :
Dept. of Microelectron., Nankai Univ., Tianjin
Abstract :
A 100-mA CMOS low-dropout regulator (LDO) with a new frequency compensation method is presented in this work. With only a compensation pMOS transistor, the LDO can be stable with a 4.7muF load capacitor and has high PSRR and good transient response performance. Simulation results show that the output voltage can recover within 1mus for full load current changes and the voltage variation is less than 8mV. The power-supply rejection ratio at 1KHz is -72.3dB
Keywords :
CMOS integrated circuits; MOSFET; capacitors; compensation; power supply circuits; transient response; voltage regulators; 100 mA; 4.7 muF; CMOS low-dropout regulator; compensation pMOS transistor; frequency compensation; load capacitor; transient response; Capacitance; Capacitors; Frequency; MOSFETs; Paramagnetic resonance; Poles and zeros; Regulators; Stability; Transient response; Voltage;
Conference_Titel :
Solid-State and Integrated Circuit Technology, 2006. ICSICT '06. 8th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0160-7
Electronic_ISBN :
1-4244-0161-5
DOI :
10.1109/ICSICT.2006.306273
