Invention Grant
- Patent Title: Low drop out voltage regulator and method therefor
- Patent Title (中): 低压降电压调节器及其方法
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Application No.: US14690896Application Date: 2015-04-20
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Publication No.: US09553548B2Publication Date: 2017-01-24
- Inventor: Chang Joon Park , Ravi C. Geetla , Octavio A. Gonzalez
- Applicant: FREESCALE SEMICONDUCTOR, INC.
- Applicant Address: US TX Austin
- Assignee: NXP USA, INC.
- Current Assignee: NXP USA, INC.
- Current Assignee Address: US TX Austin
- Main IPC: H03F1/00
- IPC: H03F1/00 ; H03F1/26 ; H03F3/45 ; G05F1/625
Abstract:
A circuit and method for regulating an output voltage are provided. The circuit includes a fully differential first stage amplifier, a second stage amplifier, and a power output driver transistor. The first stage amplifier receives a reference voltage and feedback voltage relative to an output voltage of the power output driver transistor. A differential output of the first stage amplifier is received at differential inputs of the second stage amplifier. The second stage amplifier provides a voltage at a control terminal of the power transistor. The output voltage of the power transistor is based on the voltage at the control terminal and a supply voltage coupled to the power output driver transistor.
Public/Granted literature
- US20160308497A1 LOW DROP OUT VOLTAGE REGULATOR AND METHOD THEREFOR Public/Granted day:2016-10-20
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