Systems, apparatus, and methods for powering electronic devices with low voltage batteries

A method of powering a device, the method comprising:

• providing a circuit with a first transistor having a base, an emitter, and a collector, wherein the emitter is coupled to ground and the collector is coupled to an enable pin of a DC-DC booster;
• providing a microcontroller having an output port, a system power terminal, and an input port;
• generating a first signal from the output port of the microcontroller;
• transmitting the first signal to the enable pin of the DC-DC booster;
• generating a second signal from the output port of the microcontroller, wherein the second signal is an inverted version of the first signal;
• and
• transmitting the second signal to the base of the first transistor.

A system comprising:

• a microcontroller having an output port, a system power terminal, an input port, data terminals, and control terminals;
• a sensor port for receiving a blood glucose sensor, the sensor port coupled to the data terminals and control terminals of the microcontroller;
• a first signal generated from the output port of the microcontroller and coupled to an enable pin of a DC-DC booster;
• a first transistor having a base, an emitter, and a collector;
• and
• a second signal generated from the output port of the microcontroller and coupled to the base of the first transistor, wherein the second signal is an inverted version of the first signal,
• wherein the emitter of the first transistor is coupled to ground and the collector of the first transistor is coupled to the enable pin of the DC-DC booster.