Patent ID: 7554312

Claim:
A voltage converter comprising: a current mirror to be coupled with a power source; a first transistor device to be coupled with a bias generator to receive a bias voltage, the first transistor device generating a first current; a second transistor device coupled between the current mirror and the first transistor device, the first current generated by the first transistor device to pass through the second transistor device to pull the first current through the current mirror; a reference load coupled with the gate of the second transistor device and the current mirror, the reference load to receive a second current generated by the current mirror to produce a reference voltage; and an output transistor device, a gate of the output transistor device being coupled with a gate of the second transistor device, the reference load, and the current mirror, the output transistor device to receive the reference voltage and to produce a converted voltage, the converted voltage being supplied to the bias generator and to logic elements, the logic elements comprising a real time clock (RTC) circuit.