Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Reexamination Certificate
2011-06-21
2011-06-21
Luu, An T (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
C327S427000, C327S542000, C326S082000
Reexamination Certificate
active
07965125
ABSTRACT:
A current drive circuit allows for a reduction in chip size and prevents an output current from decreasing. The current drive circuit has an output terminal connected to a first resistor. The first resistor is connected to a second resistor and the drain of a first transistor. The gate of the first transistor is connected to the gate of a second transistor, a grounded first current source, and the source of a third transistor. A second current source and the third transistor are connected to a power supply line. The second current source is connected to the gate of the third transistor, the drain of a fourth transistor, the drain of a fifth transistor, and a second resistor. When the voltage decreases, the on resistance of the fourth transistor increases, the fifth transistor is then connected in series to the second transistor, which increases the gate voltage of the first transistor.
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patent: 7443391 (2008-10-01), Yoneyama
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patent: 2007/0159418 (2007-07-01), Mizuki
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patent: 1996-115136 (1996-05-01), None
patent: 2000-114891 (2000-04-01), None
Bergere Charles
Freescale Semiconductor Inc.
Luu An T
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