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US 9,753,472 B2Granted
LDO life extension circuitry
AssigneeQUALCOMM Incorporated
InventorsBurt Lee Price, Dhaval Rajeshbhai Shah, Jonathan Liu
Life of this patent
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AssigneeQUALCOMM Incorporated
InventorsBurt Lee Price, Dhaval Rajeshbhai Shah, Jonathan Liu
Estimating the term…
Systems and methods relate to extending life of a low-dropout (LDO) voltage regulator. A differential amplifier of the LDO voltage regulator includes switches that can be selectively turned on or off. When the LDO voltage regulator is bypassed or turned off (or not active), a first switch is turned on to selectively couple gates of a first input transistor and a second input transistor of the differential amplifier, to maintain the gates at a same voltage. The first switch is turned off to decouple the gates when the LDO voltage regulator is active. Further, a second switch can be turned on or off to selectively couple or decouple, respectively, the gate of the second input transistor to an output voltage of the LDO voltage regulator, based on whether the LDO voltage regulator is active or not active, respectively.
A low-dropout (LDO) voltage regulator comprising:
A method of extending life of a low-dropout (LDO) voltage regulator, the method comprising:
An apparatus comprising:
Dependencies are inferred from the claim text.