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Single transistor-control low-dropout regulator

Authors Man, Tsz Yin
Leung, Chi Yat
Leung, Alex Ka Nang
Mok, Philip Kwok Tai
Chan, Man Sun
Issue Date 2011
Source US Patent , RE42,335 E, 2011
Summary A low-dropout regulator with a single-transistor-control providing improved transient response and stability is disclosed. The single-transistor-control provides a dynamic resistance at the output of the regulator for minimizing undershoot and overshoot, and hence improves transient response. Since the single-control transistor reduces the output resistance of the regulator, the output pole is pushed to a sufficiently high frequency without affecting stability. Therefore, the limited choice of combinations of the output capacitance and its equivalent-series-resistance is substantially relaxed.
Language English
Format Patent
Access View details of TTC.PA.250S via HKUST Technology Transfer Center
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