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    • 5. 发明申请
    • CAPACITOR-FREE LOW DROP-OUT REGULATOR
    • 无电容低压降稳压器
    • US20130082672A1
    • 2013-04-04
    • US13348464
    • 2012-01-11
    • Myeung Su KIMJoon Hyung LIMSang Hoon HWANGSang Hyun MINHan Jin CHOTah Joon PARK
    • Myeung Su KIMJoon Hyung LIMSang Hoon HWANGSang Hyun MINHan Jin CHOTah Joon PARK
    • G05F1/10
    • G05F1/575
    • There is provided a low drop-out regulator. The low drop-out regulator includes an amplifier including an odd number of operational amplifiers connected to one another in series, and an output unit including a pass transistor operated by an output from the amplifier and generating an output voltage to be applied to a load, wherein the pass transistor is an N-channel transistor, and the amplifier controls a feedback loop gain between an output terminal of one of the odd number of operational amplifiers and the output unit. The feedback loop gain may be controlled independently from the trans-conductance of the pass transistor, whereby the stable output voltage may be generated, even in the case that the load and the input voltage are changed, and the design parameter may be simplified.
    • 提供了一个低压差调节器。 低压差调节器包括一个包括串联连接的奇数运算放大器的放大器,以及一个输出单元,包括一个由放大器的输出端工作的通过晶体管,并产生一个要加到负载上的输出电压, 其中所述传输晶体管是N沟道晶体管,并且所述放大器控制所述奇数个运算放大器之一的输出端与所述输出单元之间的反馈环路增益。 反馈环路增益可以独立于传输晶体管的跨导电阻来控制,由此即使在改变负载和输入电压的情况下也可以产生稳定的输出电压,并且可以简化设计参数。