Buck Regulator Hookup Guide Datasheet by SparkFun Electronics

Buck Regulator Hookup Guide
Who doesn't occasionally need power regulation? We certainly do, so we've designed the SparkFun Buck
Regulator Breakout and the SparkFun BabyBuck Regulator Breakout to help us with just such a task.
Starring the AP63203 from Diodes Inc, both breakout boards take advantage of the 2A synchronous buck
converter that has a wide input voltage range of 3.8V to 32V and fully integrated 125mΩ high-side power
MOSFET/68mΩ lowside power MOSFET to provide high-efficiency step-down DC/DC conversion. All of this
snuggled up in a a low-profile, TSOT26 package that's integrated into either a 1x1" or 0.4x0.5" board. For a wide
variety of power management needs - grab yourself a Buck Regulator or Baby Buck Regulator and let's dive in!
SparkFun Buck Regulator Breakout - 3.3V (AP63203)
Buck Regulator Hookup Guide Wish List SparkFun Wish List
Required Materials
To follow along with this tutorial, you will need the following materials. You may not need everything though
depending on what you have. Add it to your cart, read through the guide, and adjust the cart as necessary.
Thermal Tape 4x4" Square
SparkFun BabyBuck Regulator Breakout - 3.3V
Product Showcase: SparkFun Buck & BabyBuck Regulator BreakProduct Showcase: SparkFun Buck & BabyBuck Regulator Break
Small Heatsink
These tiny little black anodized heatsinks are perfect for cooling off small surface-mount components such as the A…
SparkFun Buck Regulator Breakout - 3.3V (AP63203)
SparkFun BabyBuck Regulator Breakout - 3.3V (AP63203)
(2) DC Barrel Power Jack/Connector
DC power jack/connector. This is a common barrel-type power jack for DC wall supplies. These are compatible wit…
Break Away Headers - Straight
A row of headers - break to fit. 40 pins that can be cut to any size. Used with custom PCBs or general custom head…
Break Away Male Headers - Right Angle
A row of right angle male headers - break to fit. 40 pins that can be cut to any size. Used with custom PCBs or gen…
Hook-Up Wire - Assortment (Solid Core, 22 AWG)
An assortment of colored wires: you know it's a beautiful thing. Six different colors of solid core wire in a cardboard …
You will need a soldering iron, solder, and general soldering accessories.
Suggested Reading
If you aren’t familiar with the following concepts, we recommend checking out these tutorials before continuing.
Soldering Iron - 60W (Adjustable Temperature)
Solder Lead Free - 15-gram Tube
How to Solder: Through-Hole Soldering
This tutorial covers everything you need to know about
through-hole soldering.
Logic Levels
Learn the difference between 3.3V and 5V devices and
logic levels.
Electric Power
An overview of electric power, the rate of energy
transfer. We'll talk definition of power, watts, equations,
and power ratings. 1.21 gigawatts of tutorial fun!
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INA169 Breakout Board Hookup Guide
How to interface with the INA169 Breakout Board to
measure current.
Wake-on-Shake Hookup Guide
A basic hookup guide for getting started with the
SparkFun Wake-on-Shake. The board gives you the
ability to put your project into hibernation until bumped
or shaken awake using the ADXL362 accelerometer.
This means you can design projects meant to stay inert
for long periods of time, possibly even several years,
depending on the battery type used to power the
12V/5V Power Supply Hookup Guide
In this tutorial, we will replace the 12V/5V (2A) power
supply's molex connector with two male barrel jacks
Understanding Thermal Resistance
Discussing what thermal resistance is, how it’s used for
thermal management, and how to maximize the life of
your project.