VCCS controlled LDO with small on-chip capacitor

A stable LDO (Low Drop-Out linear regulator) using VCCS (Voltage Control Current Source) is presented. The LDO is designed and implemented on GF 2P4M 0.35 μm CMOS technology. Compared with previous compensation scheme, VCCS can implement a real stable LDO with a small on-chip capacitor of 1 pF, whos...

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Bibliographic Details
Main Authors: Qiuli Li, Yao Qian, Danzhu Lv, Zhiliang Hong
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Circuit stability
Logic gates
Regulators
Thermal stability
Transistors
Voltage control
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Summary:A stable LDO (Low Drop-Out linear regulator) using VCCS (Voltage Control Current Source) is presented. The LDO is designed and implemented on GF 2P4M 0.35 μm CMOS technology. Compared with previous compensation scheme, VCCS can implement a real stable LDO with a small on-chip capacitor of 1 pF, whose stability is not affected by the variable ESR (Equivalent Series Resistor). The united gain frequency can achieve 1.5 MHz, improving the transient response. Test result shows that the LDO is stable over the full load current, with a maximum output current of 100 mA.
ISSN:2162-7541
2162-755X
DOI:10.1109/ASICON.2013.6811903