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Linear voltage regulator and electronic equipment

A technology of linear regulator and regulated output, which can be used in instruments, regulating electrical variables, control/regulating systems, etc., and can solve problems such as narrow power supply voltage range

Pending Publication Date: 2020-10-30
SHANGHAI AWINIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the application provides a linear voltage regulator and an electronic device to solve the problem that the existing linear voltage regulator has a narrow range of power supply voltage

Method used

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  • Linear voltage regulator and electronic equipment
  • Linear voltage regulator and electronic equipment
  • Linear voltage regulator and electronic equipment

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application. In the case of no conflict, the following embodiments and technical features thereof can be combined with each other.

[0032] Please refer to figure 1 , is a schematic structural diagram of a linear regulator according to an embodiment of the present invention.

[0033] The linear regulator is used to convert the power supply voltage HVCC into a stable power supply PVDD output, and supply power to the load through the power supply PVDD.

[0034] In this embodiment, the linear voltage regulator includes a...

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Abstract

The invention discloses a linear voltage regulator and electronic equipment. The linear voltage regulator comprises a pre-modulation voltage module and a voltage stabilization output module, wherein the pre-modulation voltage module is used for carrying out pre-modulation on an inputted power voltage, and outputting a modulation voltage which is smaller than the power voltage; and the voltage stabilization output module is connected with the pre-modulation voltage module, adopts the modulation voltage as a working voltage, and is used for converting the power supply voltage input to the voltage stabilization module into a stable power supply to be output. The linear voltage regulator can be applied to a wide power supply voltage scene.

Description

technical field [0001] The application relates to the technical field of integrated circuits, in particular to a linear voltage regulator and electronic equipment. Background technique [0002] A linear regulator (LDO; Low Dropout Regular) is a circuit or device that subtracts a small voltage difference from the input power supply voltage to generate a regulated stable voltage. Linear regulators have the advantages of small output ripple and are widely used in many fields. At present, linear regulators are divided into capfree LDOs and capless LDOs. Capfree LDOs need an external chip An external large capacitor is used to stabilize the voltage, and the capless LDO does not need an external capacitor. Generally, the voltage is stabilized by the built-in voltage stabilizing capacitor on the chip. [0003] The input power supply voltage of the LDO is generally not high. In the scenario where the power supply voltage is too high, if a high power supply is directly used for powe...

Claims

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Application Information

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IPC IPC(8): G05F3/26
CPCG05F3/26Y02B70/10
Inventor 王伟
Owner SHANGHAI AWINIC TECH CO LTD
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