Boardoza SPX1117 ADJ Breakout Board

The Boardoza SPX1117 ADJ Breakout Board is a compact and flexible adjustable linear voltage regulator board based on the SPX1117M3-L/TR low-dropout (LDO) regulator from MaxLinear. Designed for stable and low-noise voltage regulation, this board allows users to select between 5V (default), 3.3V, and 1.8V output voltages using dedicated solder jumper pads connected to the regulator’s ADJ pin.

With support for up to 800mA continuous output current, integrated thermal shutdown, and overcurrent protection, this module is suitable for powering embedded systems, sensors, development boards, and low-power digital electronics. Its compact size and configurable output options make it ideal for prototyping, IoT devices, industrial control systems, and portable electronics projects.

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Front Side	Back Side

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Key Features

• Selectable Output Voltage: Easily configure the regulator for 5V (default), 3.3V, or 1.8V output using onboard solder jumper pads.
• High Current Capability: Delivers up to 800mA continuous output current with peak current support up to 1A.
• Low Dropout Operation: Typical 1.1V dropout voltage at 800mA enables efficient regulation even at high current demands.
• Built-In Protection Features: Includes integrated thermal shutdown and overcurrent protection for reliable operation.
• Stable Power Regulation: Designed with manufacturer-recommended input and output capacitors to ensure stable and low-noise performance.

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Technical Specifications

Model: SPX1117-ADJ
Manufacturer: Boardoza
Manufacturer IC: MaxLinear
Functions: Adjustable Linear Voltage Regulator
Regulator Type: Low Dropout (LDO) Regulator
Input Voltage: 6.5V – 20V
Output Voltage: 5V (default), 3.3V, or 1.8V selectable
Output Current: Up to 800mA continuous
Peak Output Current: 1A
Dropout Voltage: Typical 1.1V
Protection Features: Thermal Shutdown, Overcurrent Protection
Voltage Selection Method: Solder Jumper
Operating Temperature: -40°C to +125°C
Board Dimensions: 40mm x 20mm

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Board Pinout

( J1 ) Output Voltage Selection Pads

Pin Number	Pin Name	Description
1	ADJ	Adjustable voltage configuration pad
2	ADJ	Adjustable voltage configuration pad
3	3.3V	Short pins 2 and 4 to configure 3.3V output
4	1.8V	Short pins 1 and 3 to configure 1.8V output

Default configuration provides 5V output.

( J2 ) Power Input Connector

Pin Number	Pin Name	Description
1	VIN	Power input (6.5V – 20V)
2	GND	Ground

( J3 ) Regulated Output Connector

Pin Number	Pin Name	Description
1	VOUT	Regulated output voltage (5V(default), 3.3V or 1.8V)
2	GND	Ground

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Board Dimensions

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Step Files

Boardoza SPX1117-ADJ.step

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Datasheet

SPX1117-ADJ Datasheet.pdf

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Version History

• V1.0.0 - Initial Release

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Support

• If you have any questions or need support, please contact [email protected]

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License

Hardware Design

All hardware design files are licensed under Creative Commons Attribution-ShareAlike 4.0 International License.