Freescale Semiconductor,inc.

Nxp Usa, Inc.

Richard Saez

Andre Luis Vilas Boas

Dale John McQuirk

Miten H Nagda

Walter Luis Tercariol

A voltage regulator has an output driver current mirror circuit and one or more control circuits. The output driver current mirror circuit includes an output driver transistor, a tunable resistance circuit, and a diode-connected transistor. The output driver transistor has one current electrode coupled to a supply voltage and another current electrode coupled to an output terminal for providing the output voltage of the voltage regulator. The tunable resistance circuit has one terminal coupled to a control electrode of the output driver transistor, and another terminal coupled to a current electrode of the diode-connected transistor. The one or more control circuits includes a comparator for controlling a current provided to the output driver current mirror in response to a feedback signal from the output terminal.

Tunable voltage regulator circuit

In some embodiments, a power supply slew rate detector may include a filter circuit having a capacitive element operably coupled to a power supply output provided to a flash memory circuit and a resistive element operably coupled to the capacitive element and to ground, and a Schmitt trigger including an input operably coupled to a node between the capacitive element and the resistive element, the Schmitt trigger further including an output configured to indicate a slew rate of the power supply output.

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Campinas, Brazil

Richard Saez