发明授权
US06856124B2 LDO regulator with wide output load range and fast internal loop
有权
LDO稳压器具有宽输出负载范围和快速内部环路
- 专利标题: LDO regulator with wide output load range and fast internal loop
- 专利标题(中): LDO稳压器具有宽输出负载范围和快速内部环路
-
申请号: US10191849申请日: 2002-07-09
-
公开(公告)号: US06856124B2公开(公告)日: 2005-02-15
- 发明人: David Dearn , John Stuart Malcolm , Axel Pannwitz
- 申请人: David Dearn , John Stuart Malcolm , Axel Pannwitz
- 申请人地址: DE Kirchheim/Teck-Nabern
- 专利权人: Dialog Semiconductor GmbH
- 当前专利权人: Dialog Semiconductor GmbH
- 当前专利权人地址: DE Kirchheim/Teck-Nabern
- 代理商 George O. Saile; Stephen B. Ackerman
- 优先权: EP02368074 20020705
- 主分类号: G05F1/575
- IPC分类号: G05F1/575 ; G05F1/40
摘要:
A method and a circuit to achieve a low drop-out voltage regulator with a wide output load range has been achieved. A fast loop is introduced in the circuit. The circuit is internally compensated and uses a capacitor to ensure that the internal pole is more dominant than the output pole as in standard Miller compensation. The quiescent current is set being proportional to the output load current. No explicit low power drive stage is required. The whole output range is covered by one output drive stage. By that means the total consumption of quiescent or wasted current is reduced. An excellent PSRR is achieved due to load dependent bias current.
公开/授权文献
信息查询
IPC分类: