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ATtiny43U with Boost Converter | PCB Design

ATtiny43U with Boost Converter
Version 1 - Last update: Oct 3, 2015

The integrated boost converter of ATtiny43U provides the microcontroller and
peripherals with a fixed supply voltage, generated from an external supply of lower
voltage. The boost converter is a switching type, step-up regulator that requires
some external components to be complete. This includes an external inductor, a
diode and some bypass capacitors. The inductor is connected between the VBAT
node and the LSW pin, and the Schottky diode between pins LSW and VCC. In
addition, an input capacitor and external bypass capacitor from VCC to GND are
usually required.

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