On-chip voltage stabilizing circuit

Details On-chip voltage stabilizing circuit On-chip voltage stabilizing circuit

1987-11-27

1988-10-04

Beha, Jr., William H.

Electricity: power supply or regulation systems

Self-regulating

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

323303, 323315, 330149, 330297, G05F 322, G05F 508

Patent

active

047758295

ABSTRACT:
In order to substantially suppress the noise of an integrated constant-voltage source, an integrated circuit includes an RC low-pass filter having its capacitor connected between an external chip terminal and an external ground, while the remainder of the circuit is disposed on the integrated circuit chip. The resistor of the RC low-pass filter is connected to the constant voltage of a constant-voltage source, and the output of the RC low-pass filter is coupled to the base of a transistor connected ahead of emitter-follower transistors as in a Darlington circuit. The supply voltages are obtained from the emitters of the emitter-follower transistors. A constant-current source driven by the output of the RC low-pass filter via a second resistor serves as a sink for a constant current.

REFERENCES:
patent: 2995697 (1961-08-01), Grenier
patent: 4176308 (1979-11-01), Dobkin et al.
patent: 4349778 (1982-09-01), Davis
patent: 4565959 (1986-01-01), Nagano
King, "Power Supply Sequencing Circuit," IBM Tech. Discl. Bul., vol. 19, No. 5, p. 1179, Oct. 1976.

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