Programmable charge pump

Details Programmable charge pump Programmable charge pump

1995-12-11

1998-06-02

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327390, 363 60, H03M 307

Patent

active

057606374

ABSTRACT:
A programmable charge pump produces a selected one of a plurality of bipolar output voltages in response to a pump select input signal. Transistor switches in the charge pump are controlled by logic circuitry so as to provide the selected bipolar output voltages. The charge pump may include a power management circuit to optimize power consumption by varying the clock frequency based on the current being drawn by the load. The charge pump may be fabricated as an integrated circuit which supports a plurality of interface standards requiring different bipolar supply voltages.

REFERENCES:
patent: 3470443 (1969-09-01), Berry et al.
patent: 3731112 (1973-05-01), Smith
patent: 3878450 (1975-04-01), Greatbatch
patent: 3942047 (1976-03-01), Buchanan
patent: 3943428 (1976-03-01), Whidden
patent: 3955353 (1976-05-01), Astle
patent: 3975671 (1976-08-01), Stoll
patent: 4047091 (1977-09-01), Hutchines et al.
patent: 4061929 (1977-12-01), Asano
patent: 4068295 (1978-01-01), Portmann
patent: 4106086 (1978-08-01), Holbrook et al.
patent: 4186436 (1980-01-01), Ishiwatari
patent: 4321661 (1982-03-01), Sano
patent: 4460952 (1984-07-01), Risinger
patent: 4485433 (1984-11-01), Topich
patent: 4527277 (1985-07-01), Kosaka et al.
patent: 4547682 (1985-10-01), Bialas, Jr. et al.
patent: 4596963 (1986-06-01), Lawton et al.
patent: 4636930 (1987-01-01), Bingham et al.
patent: 4679134 (1987-07-01), Bingham et al.
patent: 4736167 (1988-04-01), Kojima et al.
patent: 4745372 (1988-05-01), Miwa
patent: 4750193 (1988-06-01), Bailey
patent: 4766397 (1988-08-01), Adams
patent: 4777577 (1988-10-01), Bingham et al.
patent: 4797899 (1989-01-01), Fuller et al.
patent: 4807104 (1989-02-01), Floyd et al.
patent: 4809152 (1989-02-01), Bingham et al.
patent: 4829391 (1989-05-01), Vargas, Jr.
patent: 4871979 (1989-10-01), Shearer et al.
patent: 4897774 (1990-01-01), Bingham et al.
patent: 4914695 (1990-04-01), Martin
patent: 4922141 (1990-05-01), Lofgren et al.
patent: 4970472 (1990-11-01), Kennedy et al.
patent: 4970475 (1990-11-01), Gillig
patent: 4999761 (1991-03-01), Bingham et al.
patent: 5003197 (1991-03-01), Nojima et al.
patent: 5008629 (1991-04-01), Ohba et al.
patent: 5043686 (1991-08-01), Plunkett
patent: 5051882 (1991-09-01), Grimm et al.
patent: 5095223 (1992-03-01), Thomas
patent: 5237209 (1993-08-01), Brewer
patent: 5262934 (1993-11-01), Price
patent: 5301097 (1994-04-01), McDaniel
patent: 5397928 (1995-03-01), Chan et al.
patent: 5532915 (1996-07-01), Pantelakis et al.
Wakeman, Larry, "National's Process Enhancements Eliminate the CMOS SCR Latch-Up Problem in 56HC/74HC Logic," National Semiconductor Application Note 339, pp. 2-43 through 2-50, undated.

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