Invention Grant
- Patent Title: Power supply circuit, integrated circuit device, solid-state imaging apparatus, and electronic apparatus
- Patent Title (中): 电源电路，集成电路器件，固态成像设备和电子设备
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Application No.: US13090485Application Date: 2011-04-20
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Publication No.: US08638389B2Publication Date: 2014-01-28
- Inventor: Kazuhide Namba , Akira Chokki
- Applicant: Kazuhide Namba , Akira Chokki
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sheridan Ross P.C.
- Priority: JP2010-120198 20100526
- Main IPC: H04N5/335
- IPC: H04N5/335 ; G05F1/10
Abstract:
A power supply circuit includes: a comparison unit that compares a reference voltage and an input voltage and outputs a voltage difference signal; an output voltage generating unit that generates an output voltage based on the voltage difference signal; an input voltage generating unit that generates the input voltage based on the output voltage; a current output unit that outputs a reference current; a resistor that generates the reference voltage in accordance with the reference current; and a capacitor that is connected to the resistor in parallel and is charged by the reference current, wherein the current output unit allows the reference current at the time of startup to be lower than the reference current during an operation.
Public/Granted literature
- US20110292259A1 POWER SUPPLY CIRCUIT, INTEGRATED CIRCUIT DEVICE, SOLID-STATE IMAGING APPARATUS, AND ELECTRONIC APPARATUS Public/Granted day:2011-12-01
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