Fully integrated on-chip low dropout voltage regulator

Details Fully integrated on-chip low dropout voltage regulator Fully integrated on-chip low dropout voltage regulator

2008-12-31

2011-11-08

Behm, Harry (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C327S534000

Reexamination Certificate

active

08054055

ABSTRACT:
A low dropout voltage regulator (LDO) includes a bias voltage generator, a differential error amplifier, an output driver, a controlled active load, a Double Ended Cascode Miller compensation block. The bias voltage generator produces a plurality of bias voltages. The differential error amplifier produces a differential output voltage based on the difference between a reference voltage and a function of the output voltage. The input terminal of the output driver is coupled to one output of the differential error amplifier. The substrate terminal of the output driver is capacitively coupled to the output node and resistively coupled to the input supply node. The controlled active load is coupled to the output of the output driver, and its control terminal is coupled to a function of the second output of the differential error amplifier. The inputs of the Double Ended Cascode Miller compensation block are capacitively coupled to the output node and its output is coupled to the input terminal of the output driver.

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