Power management unit for use in portable applications

Details Power management unit for use in portable applications Power management unit for use in portable applications

2005-04-12

2005-04-12

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

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

C323S317000

Reexamination Certificate

active

06879142

ABSTRACT:
A voltage regulator includes a first stage capable of receiving a reference voltage and capable of having a first current flowing through the first stage. A second stage is capable of having a second current flowing through the second stage. A third stage is capable of outputting an output voltage and capable of having a third current flowing through the second stage. The first, second and third currents are proportional to each other throughout a range of operation of the voltage regulator between substantially zero output current and maximum output current. The first stage drives the second stage as a low input impedance load.

REFERENCES:
patent: 5631598 (1997-05-01), Miranda et al.
patent: 6522111 (2003-02-01), Zadeh et al.
patent: 6600299 (2003-07-01), Xi

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