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Various Chip-package Adapters

   Serial Snooper

Schematics

Layout

Micro-Switchers

buck7805.sch
buck7805-sch.pdf
buck7805.pcb

This is a 7805 replacement design based on an LM2842 switching regulator. It has about the same input voltage range and current handling specs, but it's a switcher, so it's far more efficient.

buck33.sch
buck33-sch.pdf
buck33.pcb

This is a 5v to 3.3v buck regulator based on an SC189 switching regulator. While a linear regulator is often used, a linear is only 66% efficient. This switcher is closer to 90% efficient and can provide up to 1.5 amps of current.

Footprint Converters

GaN breakout (0.6mm pitch) (4x actual size)
GaN breakout (0.6mm pitch) (cut for smt mounting, 1.2 5 x 3mm grid)
and another

FT2232H breakout sch

Pillar's R8C/1B to DIP adapter, with USB breakout. R8C pcb - FT232R sch - FT232R pcb

A couple of 8 pin SOIC and TSSOP to DIP adapters

BGA-48 (6x8 0.75mm) to DIP-48 (0.600) adapter

SOT-23 adapter / test rig

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  Copyright 2011   by DJ Delorie     Updated Feb 2011