发明申请
- 专利标题： Current limitation for LDO
- 专利标题（中）： LDO的当前限制
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申请号： US13066604申请日： 2011-04-19
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公开(公告)号： US20120262137A1公开(公告)日： 2012-10-18
- 发明人: Antonello Arigliano , Eric Marschalkowski
- 申请人： Antonello Arigliano , Eric Marschalkowski
- 专利权人： Dialog Semiconductor GmbH
- 当前专利权人： Dialog Semiconductor GmbH
- 优先权： EP11368013.6 20110413
- 主分类号： G05F1/573
- IPC分类号： G05F1/573
摘要：
A method and circuits to limit the output load current of a current driven LDO voltage regulator are disclosed. The current through a second pass transistor, being in parallel to a first pass transistor and being a fraction of the current through the first pass transistor is measured and compared with a reference current. In case the current through the second pass transistor is larger than this reference current the current through the gates of both pass devices is reduced and thus the output load current of the voltage regulator is limited.
公开/授权文献
- US08508199B2 Current limitation for LDO 公开/授权日：2013-08-13