<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.3.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="54.5975" y2="0" width="0" layer="20"/>
<wire x1="54.5975" y1="0" x2="54.5975" y2="40.63" width="0" layer="20"/>
<wire x1="54.5975" y1="40.63" x2="0" y2="40.63" width="0" layer="20"/>
<wire x1="0" y1="40.63" x2="0" y2="0" width="0" layer="20"/>
<text>VIN = +8V-12V</text>
<text>VOUT = +5V</text>
<text>VIN</text>
<text>GND</text>
<text>+5V</text>
<text>Step-down (Buck)
Voltage Regulator
Rev. A</text>
<text>D. Fisher, 2015/06
electronicfish.wordpress.com</text>
</plain>
<libraries>
<library name="adafruit">
<packages>
<package name="PANASONIC_F">
<description>&lt;b&gt;Panasonic Aluminium Electrolytic Capacitor VS-Serie Package F&lt;/b&gt;</description>
</package>
<package name="C0805">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="R0805">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="LED5MM">
<description>&lt;B&gt;LED&lt;/B&gt;&lt;p&gt;
5 mm, round</description>
</package>
</packages>
</library>
<library name="diode">
<description>&lt;b&gt;Diodes&lt;/b&gt;&lt;p&gt;
Based on the following sources:
&lt;ul&gt;
&lt;li&gt;Motorola : www.onsemi.com
&lt;li&gt;Fairchild : www.fairchildsemi.com
&lt;li&gt;Philips : www.semiconductors.com
&lt;li&gt;Vishay : www.vishay.de
&lt;/ul&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DO214AC">
<description>&lt;b&gt;DIODE&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Connectors">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find connectors and sockets- basically anything that can be plugged into or onto.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; Creative Commons ShareAlike 4.0 International - https://creativecommons.org/licenses/by-sa/4.0/ 
&lt;br&gt;&lt;br&gt;
You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="POWER_JACK_PTH">
</package>
<package name="1X03">
</package>
<package name="USB-A-TH-FEMALE">
</package>
</packages>
</library>
<library name="inductor-coilcraft">
<description>&lt;b&gt;Coilcraft SMD Inductors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DO3316P">
<description>&lt;b&gt;COILCRAFT&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="dfisher">
<packages>
<package name="LM2675">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="C1" library="adafruit" package="PANASONIC_F" value="150uF">
<attribute name="NAME"/>
</element>
<element name="C2" library="adafruit" package="PANASONIC_F" value="100uF">
<attribute name="NAME"/>
</element>
<element name="C3" library="adafruit" package="C0805" value=".01uF">
<attribute name="NAME"/>
</element>
<element name="D1" library="diode" package="DO214AC" value=""/>
<element name="JP2" library="SparkFun-Connectors" package="POWER_JACK_PTH" value="POWER_JACKPTH">
<attribute name="PROD_ID" value="CONN-08197"/>
</element>
<element name="L1" library="inductor-coilcraft" package="DO3316P" value="33uH">
<attribute name="MF" value=""/>
<attribute name="MPN" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="NAME"/>
</element>
<element name="R1" library="adafruit" package="R0805" value="1k">
<attribute name="NAME"/>
</element>
<element name="R2" library="adafruit" package="R0805" value="3.16k">
<attribute name="NAME"/>
</element>
<element name="R3" library="adafruit" package="R0805" value="43k">
<attribute name="NAME"/>
</element>
<element name="R4" library="adafruit" package="R0805" value="49.9k">
<attribute name="NAME"/>
</element>
<element name="R5" library="adafruit" package="R0805" value="75k">
<attribute name="NAME"/>
</element>
<element name="R6" library="adafruit" package="R0805" value="49.9k">
<attribute name="NAME"/>
</element>
<element name="JP3" library="SparkFun-Connectors" package="1X03" value="">
<attribute name="VALUE"/>
</element>
<element name="LED1" library="adafruit" package="LED5MM" value="">
<attribute name="VALUE"/>
</element>
<element name="R7" library="adafruit" package="R0805" value="220">
<attribute name="NAME"/>
</element>
<element name="U1" library="dfisher" package="LM2675" value="LM2675">
<attribute name="NAME"/>
</element>
<element name="JP4" library="SparkFun-Connectors" package="USB-A-TH-FEMALE" value="USBUSB-A-TH-FEMALE"/>
</elements>
<signals>
<signal name="VIN">
<contactref element="C1" pad="+"/>
<contactref element="JP2" pad="PWR"/>
<contactref element="JP3" pad="3"/>
<contactref element="U1" pad="VIN"/>
</signal>
<signal name="FB">
<contactref element="R1" pad="2"/>
<contactref element="R2" pad="1"/>
<contactref element="U1" pad="FB"/>
</signal>
<signal name="CB">
<contactref element="C3" pad="1"/>
<contactref element="U1" pad="CB"/>
</signal>
<signal name="VSW">
<contactref element="C3" pad="2"/>
<contactref element="D1" pad="C"/>
<contactref element="L1" pad="1"/>
<contactref element="U1" pad="VSW"/>
</signal>
<signal name="GND">
<contactref element="R1" pad="1"/>
<contactref element="C2" pad="-"/>
<contactref element="C1" pad="-"/>
<contactref element="D1" pad="A"/>
<contactref element="JP2" pad="GNDBREAK"/>
<contactref element="JP2" pad="GND"/>
<contactref element="R4" pad="2"/>
<contactref element="R6" pad="2"/>
<contactref element="JP3" pad="2"/>
<contactref element="LED1" pad="A"/>
<contactref element="U1" pad="GND"/>
<contactref element="U1" pad="P$2"/>
<contactref element="U1" pad="P$3"/>
<contactref element="JP4" pad="GND"/>
</signal>
<signal name="+5V">
<contactref element="R5" pad="2"/>
<contactref element="R3" pad="2"/>
<contactref element="L1" pad="2"/>
<contactref element="C2" pad="+"/>
<contactref element="R2" pad="2"/>
<contactref element="JP3" pad="1"/>
<contactref element="R7" pad="2"/>
<contactref element="JP4" pad="VBUS"/>
</signal>
<signal name="N$6">
<contactref element="R5" pad="1"/>
<contactref element="R4" pad="1"/>
<contactref element="JP4" pad="D+"/>
</signal>
<signal name="N$7">
<contactref element="R3" pad="1"/>
<contactref element="R6" pad="1"/>
<contactref element="JP4" pad="D-"/>
</signal>
<signal name="ON/OFF">
<contactref element="U1" pad="ON/OFF"/>
</signal>
<signal name="N$1">
<contactref element="LED1" pad="K"/>
<contactref element="R7" pad="1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
