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.
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.
GaN breakout (0.6mm pitch) (4x actual size)
GaN breakout (0.6mm pitch) (cut for smt mounting, 1.2 5 x 3mm grid)
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
|webmaster donations bookstore||delorie software privacy|
|Copyright © 2011 by DJ Delorie||Updated Feb 2011|