LOW DROPOUT LINEAR REGULATORS AND STARTING METHODS THEREFOR
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United States of America Patent
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app pub date -
Aug 28, 2014
filing date -
Aug 28, 2013
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Abstract
A low dropout linear regulator, a starting method, an electronic device, and a chip are provided. The starting method includes the steps of beginning a soft-starting process of the low dropout linear regulator and providing a first current; when an output voltage of the low dropout linear regulator reaches a starting voltage, providing a second current; and dynamically adjusting a threshold of an over current during the soft-starting process of the low dropout linear regulator, wherein the over current includes at least one of the first current and the second current. Through the low dropout linear regulator, the starting method, the electronic device, and the chip, there is short starting time and less overshoot of the output voltage, thereby achieving a fast and safe starting process. Moreover, the circuit is protected, and the usage quality and life is enhanced.
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