> ## Documentation Index
> Fetch the complete documentation index at: https://learn.pcbcupid.com/llms.txt
> Use this file to discover all available pages before exploring further.

> The GMOD SX1308 DC-DC Boost Converter is a high-frequency, high-efficiency step-up module that converts low input voltages (2V–24V) to higher output voltages (2V–28V).

# DC-DC Boost Converter (SX1308)

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The **GMOD SX1308 DC-DC Boost Converter** is a high-frequency (1.2MHz) step-up power module designed to efficiently convert lower input voltages into stable higher output voltages. Powered by the high-performance **SX1308** IC, this module is perfect for applications requiring compact, high-efficiency power management, such as driving 5V logic from a single 3.7V Li-ion battery or powering sensors in portable electronics.

Its small form factor and 95% peak efficiency make it an ideal choice for robotics, IoT devices, and DIY electronics projects where space and power conservation are critical.

***

## Product Variants

The GMOD Boost Converter is available in two distinct variants to suit different application needs:

1. **Fixed 5V Output**: Pre-configured to provide a steady **5V DC** output, making it a "plug-and-play" solution for powering microcontrollers and standard logic circuits.
2. **Variable Output**: Features an on-board potentiometer allowing you to manually adjust the output voltage anywhere from **2V to 28V**.

***

## Key Features

* **High-Frequency Operation**: Operates at **1.2MHz**, allowing the use of small external components (inductors/capacitors) for a more compact design.
* **High Efficiency**: Advanced synchronous rectification enables up to **95% efficiency**.
* **Stable Performance**: Delivers low ripple and noise for sensitive electronic circuits.
* **Wide Input/Output Range**: Versatile enough for a variety of battery-powered and industrial applications.
* **Integrated Protections**: Includes thermal shutdown and over-current protection.

***

## Technical Specifications

| Parameter                     | Operating Range |
| :---------------------------- | :-------------- |
| **Input Voltage (V\_IN)**     | 2.0V – 24.0V DC |
| **Output Voltage (V\_OUT)**   | 2.0V – 28.0V DC |
| **Integrated Switch Current** | 2.0A            |
| **Switching Frequency**       | 1.2 MHz         |
| **Peak Efficiency**           | Up to 95%       |
| **Internal Resistance**       | 100mΩ (Typical) |

***

## Pin Configuration

| Pin Name        | Description                                     |
| :-------------- | :---------------------------------------------- |
| **V+ (Input)**  | Positive rail of the input supply (2V to 24V)   |
| **V- (Input)**  | Negative rail (Ground) of the input supply      |
| **V+ (Output)** | Boosted positive rail of the output (2V to 28V) |
| **V- (Output)** | Common Ground for the output rail               |

***

## Applications

* **Battery Up-Regulation**: Steps up 3.7V Lithium-ion/Li-Polymer battery voltage to 5V to power microcontrollers and sensors.
* **Robotics & IoT**: Provides compact, efficient step-up voltage management in space-constrained layouts.
* **Portable Electronics**: Driving LED arrays, displays, and other modules requiring stable higher voltages from lower battery sources.

***

## Step 1: Hardware Required

1. GMOD Boost Converter (Fixed or Variable)
2. Input Source (e.g., 3.7V Battery or 12V supply)
3. Multimeter (for Variable variant calibration)
4. Load (e.g., LED, Sensor, or Microcontroller)

***

## Step 2: Circuit Connection

Connect the input source to the **V+ (Input)** and **V- (Input)** terminals. For the variable variant, it is recommended to adjust the potentiometer **before** connecting your final load.

![Boost Converter Circuit Diagram](https://files.pcbcupid.com/Documentation/Boards/g-mod/Boost_convertor/boost_converter_circuit_placeholder.png)

***

## Step 3: Observe the Output

Once powered, the module will boost the input voltage.

* **For Fixed 5V**: The output will measure approximately 5V regardless of the input (provided V\_IN \< 5V).
* **For Variable**: Use a multimeter on the output terminals and slowly rotate the potentiometer to set your desired voltage level.

![Boost Converter Operation](https://example.com/dummy-boost-animation.gif)

<Warning>
  **Boost Ratio Limit**: The SX1308 is a step-up converter; the input voltage should always be **lower** than the desired output voltage for proper operation. Ensure your load does not exceed the 2A internal switch current limit.
</Warning>

<Info>
  * **Potentiometer**: If the output voltage does not change on first use, you may need to rotate the potentiometer **counter-clockwise** for several turns (often 10-20 turns) to begin seeing a reduction or increase.
  * **Logic Level Power**: If you are powering a microcontroller from a 3.7V battery, the Fixed 5V variant ensures the logic stays stable even as the battery voltage drops.
</Info>