A Low Dropout Regulator Without Ezternal Output Capacitor
A novel architecture is proposed for implementing external capacitor free LDO regulator. By using both NMOS and PMOS differential input pairs in the error amplifier’s first stage of a LDO, a pushpull stage is implemented in its second stage, offering very fast response speed. Compared to a traditional LDO, test results show this proposed LDO topology is stable and provides comparable performances without using external input and output capacitors. With an external output capacitor (up to 1μF) employed, the LDO is still stable. The applications of this capacitorfree LDO regulator are more flexible and economical.
Shengming Huang
Power Management Division, National Semiconductor, Larkfield Industrial Estate, Greenock, PA16 0EQ, UK
国际会议
The Seventh International PCIM China(第七届电子功率器件、智能传送、电源质量国际研讨会)
上海
英文
56-60
2008-03-18（万方平台首次上网日期，不代表论文的发表时间）