发明名称 |
Differential amplifier circuit that can change current flowing through a constant-current source according to load variation, and series regulator including the same |
摘要 |
A differential amplifier circuit including: a differential input stage including a pair of differential MOS transistors, a pair of load elements, and a first constant-current source; an output stage including an output MOS transistor and a second constant-current source; a constant-current MOS transistor provided in parallel to one of the first and second constant-current sources; and a boost current controlling MOS transistor in which a potential of a connection node of the output MOS transistor and the second constant-current source is applied to a gate terminal thereof; wherein the boost current controlling MOS transistor is turned on when a voltage inputted to a gate terminal of one of the pair of differential MOS transistors changes, and a current of the constant-current MOS transistor is added to one of the first and second constant-current sources and is allowed to flow. |
申请公布号 |
US8665020(B2) |
申请公布日期 |
2014.03.04 |
申请号 |
US201113175512 |
申请日期 |
2011.07.01 |
申请人 |
SAKURAI KOHEI;TERADA AKIHIRO;TAKANO YOICHI;MITSUMI ELECTRIC CO., LTD. |
发明人 |
SAKURAI KOHEI;TERADA AKIHIRO;TAKANO YOICHI |
分类号 |
H03F3/45;H03F3/30 |
主分类号 |
H03F3/45 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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