Methods and Apparatus for a Burst Mode Charge Pump Load Switch
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United States of America Patent
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Mar 4, 2015
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Mar 4, 2015
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Abstract
A fully integrated circuit configuration that can be used to control the gate voltage of a power NMOS load switch using a unique method of controlling the charge pump voltage by utilizing a feedback loop to regulate the gate voltage and turning off the charge pump periodically in order to save power. This configuration is suitable for load switch applications where the input voltage can be as low as 0.8V.
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