Control circuit having a comparator for a bandgap circuit

Details Control circuit having a comparator for a bandgap circuit Control circuit having a comparator for a bandgap circuit

2007-11-05

2011-10-18

Nguyen, Chanh (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

Reexamination Certificate

active

08040340

ABSTRACT:
A control circuit for a start-up circuit that induces current flow in a bandgap circuit during a start-up phase is disclosed. A comparator passes a power supply to the start-up circuit according to an internal node of the bandgap circuit after the start-up phase. An activating circuit is used to activate the comparator to obtain the power supply at an output earlier than another output node of the comparator.

REFERENCES:
patent: 5686823 (1997-11-01), Rapp
patent: 6232757 (2001-05-01), Afghahi et al.
patent: 2007/0210856 (2007-09-01), Uehara
patent: 2009/0219746 (2009-09-01), Bosmuller et al.
patent: WO 20007118679 (2007-10-01), None

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