发明申请
- 专利标题： Regulator circuitry and method
- 专利标题（中）： 调节器电路和方法
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申请号： US10695294申请日： 2003-10-27
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公开(公告)号： US20050088152A1公开(公告)日： 2005-04-28
- 发明人: David McClure , Mehdi Zamanian
- 申请人： David McClure , Mehdi Zamanian
- 专利权人： STMicroelectronics, Inc.
- 当前专利权人： STMicroelectronics, Inc.
- 主分类号： G05F1/40
- IPC分类号： G05F1/40 ; G05F3/24
摘要：
A regulator circuit and method are disclosed for a system. The regulator circuit may include a compare circuit for comparing a first supply voltage to a predetermined voltage level and generating an enable signal based upon the comparison. A selectively enabled voltage regulator is adapted to make available a predetermined current level at a regulated voltage when enabled by the compare circuit. When disabled, the voltage regulator circuit is prohibited from providing current. The voltage regulator may include an output transistor that is normally biased in a saturation mode of operation and is deactivated by the enable signal. By controlling the output transistor based upon the output of the compare circuit, the need for a relatively large transistor for connecting to the first supply voltage is eliminated.
公开/授权文献
- US07064534B2 Regulator circuitry and method 公开/授权日：2006-06-20
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