Title :
A low dropout regulator with over current reminder circuits
Author :
Yong-sheng, Wang ; Rui-xuan, Li ; Ming-yan, Yu ; Feng-chang, Lai
Author_Institution :
Micro-Electron. Center, Harbin Inst. of Technol., Harbin, China
Abstract :
A low voltage, low dropout (LDO) regulator with an over current reminder circuit is proposed in this paper. Based on SMIC 0.18 ¿m mix signal CMOS process, the circuit is able to drive a load up to 120 mA, and it can give an over current warning to the customer when the load current is over 120 mA, and when the load current drops down to 110 mA the warning will be recalled. By using the pole-zero tracking frequency compensation, the ripple of the output voltage between 28 mV~30 mV when a current pulse draws-out from the LDO.
Keywords :
mixed analogue-digital integrated circuits; voltage regulators; SMIC mix signal CMOS process; current pulse; current reminder circuits; low dropout regulator; low voltage regulator; pole-zero tracking frequency compensation; size 0.18 mum; voltage 28 mV to 30 mV; Circuits; Energy management; Frequency; Immune system; Low voltage; Poles and zeros; Power system management; Protection; Regulators; Stability; low dropout (LDO) regulator; over current reminder circuit; pole-zero tracking frequency compensation;
Conference_Titel :
ASIC, 2009. ASICON '09. IEEE 8th International Conference on
Conference_Location :
Changsha, Hunan
Print_ISBN :
978-1-4244-3868-6
Electronic_ISBN :
978-1-4244-3870-9
DOI :
10.1109/ASICON.2009.5351389
