LDO With Distributed Output Device
First Claim
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1. An apparatus comprising:
- a first input terminal configured to receive a bias voltage, the bias voltage received from a low-dropout voltage regulator (LDO) error amplifier, and a second input terminal configured to receive a supply voltage;
a first output terminal configured to supply a feedback voltage, the feedback voltage supplied to the LDO error amplifier, and a second output terminal configured to supply regulated power to an associated load;
a regulating portion configured to regulate power supplied to the associated load; and
a switching portion configured to enable or disable the load from receiving the regulated power.
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Abstract
A method and apparatus for supplying independently switched, regulated power to a plurality of loads is disclosed.
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Citations
22 Claims
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1. An apparatus comprising:
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a first input terminal configured to receive a bias voltage, the bias voltage received from a low-dropout voltage regulator (LDO) error amplifier, and a second input terminal configured to receive a supply voltage; a first output terminal configured to supply a feedback voltage, the feedback voltage supplied to the LDO error amplifier, and a second output terminal configured to supply regulated power to an associated load; a regulating portion configured to regulate power supplied to the associated load; and a switching portion configured to enable or disable the load from receiving the regulated power. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a first device configured to supply regulated power to a first load, the first device configured to receive a bias voltage from a low-dropout voltage regulator (LDO) error amplifier, and the first device configured to supply a feedback voltage to the LDO error amplifier; and a second device configured to supply regulated power to a second load, the second device configured to receive the bias voltage from the LDO error amplifier, and the second device configured to supply a feedback voltage to the LDO error amplifier, wherein the first device shares a same feedback connection with the second device, and the first device is enabled or disabled independently from the second device. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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receiving at a plurality of devices a bias voltage, the bias voltage received from a low-dropout voltage regulator (LDO) error amplifier, wherein the plurality of devices share a common bias connection and receive the same bias voltage; supplying from the plurality of devices a feedback voltage, the feedback voltage supplied to the LDO error amplifier, wherein the plurality of devices share a common feedback connection; receiving at the plurality of devices a supply voltage, the supply voltage supplied to an input of each of the plurality of devices, wherein the supply voltage has a same voltage level at each input; and supplying regulated power from one of the plurality of devices to an associated one of a plurality of loads when the one of the plurality of devices is enabled, and not supplying the regulated power to the associated one of the plurality of loads when the one of the plurality of devices is not enabled, wherein each of the plurality of devices is enabled and disabled independently from the other of the plurality of devices. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification