Voltage regulator circuit of integrated circuit chip

Details Voltage regulator circuit of integrated circuit chip Voltage regulator circuit of integrated circuit chip

2006-04-04

2006-04-04

Vu, Bao Q. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S284000, C323S275000

Reexamination Certificate

active

07023189

ABSTRACT:
A voltage regulator circuit for use with an integrated circuit (IC) chip and an external voltage source includes a first transistor and a second transistor. The first transistor has the emitter thereof electrically connected to the external voltage source and the collector thereof electrically connected to the IC chip via a power input pin. The second transistor has the collector thereof electrically connected to ground, the base thereof electrically connected to the IC chip via a voltage-regulation control pin, and the emitter electrically connected to the base of the first transistor. The voltage regulator circuit is utilized for regulating a source voltage received from the external voltage source via the first transistor in response to a current signal flowing through the voltage-regulation control pin to have the regulated voltage inputted into the integrated circuit chip via the power input pin.

REFERENCES:
patent: 5578960 (1996-11-01), Matsumura et al.
patent: 6667604 (2003-12-01), Yanagisawa
patent: 6822428 (2004-11-01), Miyanaga et al.
patent: 6897638 (2005-05-01), Miyanaga et al.

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