Free Circuit Diagram

A DC-to-DC step-up converter is traditionally implemented using tranformer, working by converting the DC voltage to AC Voltage, step-up it using transformer, then rectify anf filter the transformer’s output to  get a higher DC voltage. Using a switching method, we can step-up a voltage without a transformer. We just need an inductor which is driven [...]

Using this switch mode regulator circuit, you can get a stable 12 volt output (500mA) although you just have 4,3 - 10V power supply. You can even boost a 3.5V input to 12V if the load draws only 100 mA or less. This switch mode voltage regulator use LTC1266 IC chip from Linear Technology. Here [...]

This switch mode regulator circuit has higher current output than  our previous switch mode regulator, but it uses same controller IC. Up to 10A can be served by this switch mode regulator. The output of this regulator circuit is regulated at 3.3 volt, and the input range is 4-9Volt.

The SHDN pin can be pulled high [...]

This switch mode step-down converter has very good efficiency, up to 94% can be obtained. This switch mode regulator uses LTC1266-3.3 controller with external N-Channel power mosfet, and need only a 5uH inductor because it uses high frequency switching. Here is the schematic diagram of this switch mode step down converter circuit:

To optimize efficiency, the [...]

This low drop out (LDO) voltage regulator need only few components, with very low noise and very low drop-out voltage. The circuit illustrated in the schematic diagram below gives a fixed 2.77 volt output, but this output voltage can be adjusted using two additional resistors.

This circuit capable to supply 300 mA load from 3.0 V [...]