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Hardware Overview

Design Files

  • Design Files

  • Download the *.step File

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    Board Dimensions
    Dimensions of the Qwiic 5V Boost.

    Need more measurements?

    For more information about the board's dimensions, users can download the KiCad files for this board. These files can be opened in KiCad and additional measurements can be made with the measuring tool.

    KiCad - Free Download!

    KiCad is free, open-source CAD program for electronics. Click on the button below to download their software. (*Users can find out more information about KiCad from their website.)

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    đź“Ź Measuring Tool

    This video demonstrates how to utilize the dimensions tool in KiCad, to include additional measurements:

    QR code to play video

Board Layout

Layout

Layout of the major components on the Qwiic 5V Boost.

The Qwiic 5V Boost has the following features:

  1. PTH Breakout Pins
    A set of six 0.1" pitch PTH pins that breakout the boosted power and converted TTL signals of the I2C bus; and a control pin for the boost converter.
  2. Qwiic Connectors
    The primary interfaces for the Qwiic 5V Boost, these are pass-through connectors for the I2C bus.
  3. PWR LED
    A red indication LED for when the board is supplied with 3.3V.

Breakout Pins

The PTH pins of the Qwiic 5V Boost breakout: the 3.3V power supply from the Qwiic connectors that supplies power to the AP3012, the boosted 5V power output from the AP3012, a control pin to disable the AP3012, and the converted 5V, logic-level I2C signals from the Qwiic connectors.

Flipped pins

Pin connections between the top and bottom of the Qwiic 5V Boost.

GND
The common ground or the 0V reference for the voltage supplies.
3V3
The same 3.3V operating power for the Qwiic connectors.
SDA/SCL
The converted TTL signals of the I2C pins from the Qwiic connectors; their converted logic-level is controlled by the 3V3/5V jumpers.
5V
The boost 5V power output from the AP3012 boost converter, which is rated up to ~100mA load.
SHDN
The control signal for AP3012 boost converter; pull LOW to disable the IC.

I/O Configurations

With the 3V3/5V jumpers to configure the logic-levels of the I2C PTH pins, users can convert the power and logic-levels of the Qwiic connector to any combination of 3.3V and/or 5V on the PTH pins:

Output Power 5V 5V 3.3V
I2C Logic-Level 3.3V 5V 5V

By default, the pins are configured to a 5V logic-level.

Maximum Load Current

We recommend a maximum load current of ~100mA from the 5V output supply voltage from the AP3012 boost converter.

The boosted supply voltage of the boost converter will begin to drop as the current draw from the load increases. We found that for a boosted 5V output from a 3.3V input voltage, there is an inflection point around 100mA where the boosted voltage begins to drop off significantly.

Load Current Boosted Voltage
10mA 4.92V
20mA 4.91V
75mA 4.90V
100mA 4.89V
150mA 4.87V
200mA 4.65V

Info

This limitation is driven by the current load and supply current for the Qwiic connect system. It is not dictated by the junction temperature of the AP3012.

Qwiic Connectors

Qwiic connectors are provided for users to seamlessly integrate with SparkFun's Qwiic Ecosystem. These are pass-through connectors that operate at the standard 3.3V operating voltage and logic-levels.

Qwiic connectors

Qwiic connectors on the Qwiic 5V Boost.

What is Qwiic?

Qwiic Logo - light theme Qwiic Logo - dark theme

The Qwiic connect system is a solderless, polarized connection system that allows users to seamlessly daisy chain I2C boards together. Play the video, to learn more about the Qwiic connect system or click on the banner above to learn more about Qwiic products.

QR code to instructional video

Features of the Qwiic System

no soldering - light theme no soldering - dark theme

Qwiic cables (4-pin JST) plug easily from development boards to sensors, shields, accessory boards and more, making easy work of setting up a new prototype.

polarized connector - light theme polarized connector - dark theme

There's no need to worry about accidentally swapping the SDA and SCL wires on your breadboard. The Qwiic connector is polarized so you know you’ll have it wired correctly every time.

The part numbers for the PCB connector is SM04B-SRSS (Datasheet) and the mating connector on the cables is SHR04V-S-B; or an equivalent 1mm pitch, 4-pin JST connection.

daisy chainable - light theme daisy chainable - dark theme

It’s time to leverage the power of the I2C bus! Most Qwiic boards will have two or more connectors on them, allowing multiple devices to be connected.

LED

There is a red PWR LED to indicate when the Qwiic 5V Boost is powered with 3.3V. The LED can be disabled by cutting the LED jumper.

LED

The red PWR LED the Qwiic 5V Boost.

Jumpers

There are four jumpers on the back of the board that can be used to easily modify the hardware connections on the board.

Jumpers

The jumpers on the top of the Qwiic 5V Boost.

I2C
This jumper can be cut to disconnect the pull-up resistors from the I2C pins of Qwiic connectors.
I2C HV
This jumper can be cut to disconnect the pull-up resistors from the I2C pins of PTH breakout pins.
LED
This jumper can be cut to remove power from the red PWR LED.
3V3/5V
Configures the TTL signal level for the I2C pins of PTH breakout pins to either 5V or 3.3V.
Never modified a jumper before?

Check out our Jumper Pads and PCB Traces tutorial for a quick introduction!