Texas Instruments Corporation

Mark Pulkin

Gabriel Alfonso Ricon-Mora

David D Briggs

Robert B Borden

The low voltage to high voltage level shifter has falling-edge 1-shot circuits and coupled to the outputs OUT and OUT_B of cross gate-connected transistors and and pull-down transistors and . The falling-edge 1-shot circuits and output a narrow pulse when the outputs OUT and OUT_B transition from a high state to a low state. These pulses are used to set and reset a flip-flop . The flip flop provides an output that is only dependent on the very fast fall times of the outputs OUT and OUT_B. This allows the level shifter to be designed for optimal transitional performance without the sacrifice of a potentially long propagation delay on the output nodes.

Technique for improving propagation delay of low voltage to high voltage level shifters

A voltage regulator circuit that provides the current necessary to drive an output driver during transients and maintain low output impedance, while having a much better dropout voltage than a single source follower gain stage includes: an output driver ; a source follower for controlling the output driver; a localized feedback gain loop coupled to the source follower ; and an amplifier for controlling the source follower

Stable low dropout, low impedance driver for linear regulators

A voltage regulator circuit includes: an output transistor MP.sub.X coupled between a voltage supply node V.sub.CC and an output node V.sub.OUT ; an amplifier A.sub.1 coupled to the output transistor MP.sub.X for controlling the response of the output transistor MP.sub.X ; feedback circuitry R.sub.1 and R.sub.2 connected between the output node V.sub.OUT and the amplifier A.sub.1, the feedback circuitry R.sub.1 and R.sub.2 providing feedback to the amplifier A.sub.1 ; and a pull-down circuit PD.sub.1 coupled to the output node V.sub.OUT.

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Rowlett, TX, United States of America

Mark Pulkin