Description
LTC3780 10A DC-DC Automatic Buck Boost Converter Module with Adjustable CC/CV & UVLO Protection
The LTC3780 10A DC-DC Buck Boost Converter Module is a high-performance automatic step-up/step-down power supply designed to deliver a stable output voltage even when the input voltage fluctuates above or below the desired output. Powered by the Linear Technology LTC3780 controller IC, this intelligent converter automatically switches between buck (step-down) and boost (step-up) modes without interrupting the output, making it ideal for automotive, battery-powered, solar, industrial, and DIY power applications.
Unlike conventional DC-DC converters that only boost or only buck the voltage, the LTC3780 seamlessly regulates the output voltage whether the input rises or falls. This makes it particularly suitable for automotive systems where battery voltage can vary from approximately 10.5V to 14.4V, ensuring sensitive electronics receive a constant and reliable power supply.
The module features Constant Voltage (CV) and Constant Current (CC) adjustment, allowing precise control over output voltage and current. An integrated Undervoltage Lockout (UVLO) function protects batteries from deep discharge by automatically shutting down the output when the input voltage falls below the user-defined threshold.
Designed with premium components, a replaceable input fuse, low ESR capacitors, and an efficient aluminum heatsink, the LTC3780 converter achieves up to 98% conversion efficiency, making it suitable for battery charging, LED driving, solar systems, laboratory power supplies, robotics, embedded systems, and industrial automation.
Key Features
- Original Linear Technology LTC3780 controller IC.
- Automatic Buck & Boost conversion.
- Input voltage from 5V to 32V DC.
- Adjustable output voltage from 1V to 30V DC.
- Maximum output current up to 10A.
- Recommended continuous output current up to 8A.
- Constant Voltage (CV) adjustment.
- Constant Current (CC) adjustment.
- Adjustable Undervoltage Lockout (UVLO).
- High conversion efficiency up to 98%.
- Replaceable input protection fuse.
- Short circuit protection.
- Large oxidized aluminum heatsink for efficient cooling.
- High-quality low ESR capacitors.
- Heavy copper PCB for better current handling.
- Stable output with low ripple.
- Ideal for battery charging and power regulation.
- Compact and easy-to-install design.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | LTC3780 DC-DC Buck Boost Converter Module |
| Controller IC | Linear Technology LTC3780 |
| Converter Type | Automatic Non-Isolated Buck-Boost |
| Input Voltage | 5V–32V DC |
| Output Voltage | 1V–30V DC Adjustable |
| Maximum Output Current | 10A |
| Recommended Continuous Current | 8A |
| Continuous Output Power | 80W |
| Peak Output Power | 130W (with active cooling) |
| Conversion Efficiency | Up to 98% |
| Switching Frequency | 200–400KHz |
| Voltage Regulation | Constant Voltage (CV) |
| Current Regulation | Constant Current (CC) |
| Battery Protection | Adjustable UVLO |
| Short Circuit Protection | Replaceable Fuse |
| Cooling | Oxidized Aluminum Heatsink |
| Mounting Type | PCB Module |
| Isolation | Non-Isolated |
Applications
- Automotive Power Supplies.
- Car PC Power Systems.
- DIY Bench Power Supply.
- Solar Battery Charging.
- MPPT Power Projects.
- Lithium Battery Charging.
- Lead Acid Battery Chargers.
- High-Power COB LED Drivers.
- Laboratory Power Supply.
- Portable Power Stations.
- RC Battery Charging.
- Robotics Projects.
- Embedded Systems.
- Arduino & Raspberry Pi Projects.
- Industrial Automation.
- Telecom Equipment.
- CNC Controllers.
- Power Backup Systems.
- DC Motor Power Supply.
- Electronic Prototyping.
Precautions
- Always verify input and output polarity before powering the module.
- Set the output voltage before connecting the load.
- Adjust the current limit according to the connected device.
- Use adequate cooling when operating above 80W.
- Do not exceed the maximum input voltage of 32V DC.
- Ensure sufficient airflow during high-current operation.
- Replace the input fuse only with the recommended rating.
- Avoid short circuits on the output terminals.
- Keep the module away from moisture and conductive dust.
- Disconnect power before making wiring changes.