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Simple 3 Amp Step Down Switchmode Regulator

Although this example is 5V, there are also 3.3V, 12V, 15V, and adjustable output versions of the LM2576 (see attached datasheet).

The board layout here is using a simple Vero Board which are available from just about any electronics store

Except for the Adjustable output version the same layout can be used for each.

Note: Pin 5 (which is grounded below) can also be used to switch the external loads on/off via a logic input e.g. 0v or 5V, for example an LPT port.

The boards below where built for projects in the Air-Stream Wireless Network as the circuit is ideal for Power over Ethernet (PoE) applications where a Wireless Access Point is mounted up on the mast.