Spec Sheet - LT-3637

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Condition	Brand New

The L-Tech LT-3637 is a high-performance Constant Voltage (CV) power repeater designed for large-scale LED lighting projects. It not only amplifies the PWM control signal to extend long runs of LED strips without signal degradation or voltage drop, but it also serves a crucial, specialized function: converting a common anode control signal to a common cathode output. This unique capability allows you to integrate common cathode LED strips into a system designed for common anode fixtures, solving complex compatibility issues. With a robust 15A total output (5A per channel), the LT-3637 is the ideal solution for powering extensive runs of 12V or 24V RGB and single-color LED strips, ensuring uniform brightness and color consistency from start to finish.

Key Features

Common Anode to Common Cathode Conversion

Uniquely translates common anode PWM input signals to common cathode outputs, enabling seamless integration of otherwise incompatible LED strips and controllers.

High-Capacity 15A Output

Delivers a substantial 5A across each of its three channels for a total maximum output of 15A, perfect for powering long or high-density LED strips.

Wide Voltage Compatibility

Operates on both DC 12V and DC 24V systems, offering flexibility for a wide range of constant voltage LED lighting applications.

3-Channel PWM Amplification

Receives and boosts the PWM signal from a main LED controller, ensuring synchronized and consistent dimming and color control across all connected strips.

Compact & Efficient Design

Features a small footprint for easy installation in tight spaces like enclosures or channels, with high efficiency and low heat generation.

Technical Highlights

Ensures perfect PWM signal synchronization between the controller and extended LED strips.
Solves signal attenuation and voltage drop issues in large installations.
Enables control of common cathode strips with common anode controllers.
Robust power handling up to 360W at 24V.

Product Specifications

Parameter	Details
Model	LT-3637
Product Type	CV Power Repeater / Signal Converter
Input Signal	PWM (Pulse Width Modulation)
Input Voltage	DC 12V ~ 24V
Max Load Current	5A × 3 Channels (Max 15A total)
Max Output Power	180W (at 12V) / 360W (at 24V)
Output Signal	Constant Voltage (CV) PWM
Polarity Conversion	Common Anode (Input) to Common Cathode (Output)
Working Temperature	-30℃ ~ 55℃
Dimensions (L×W×H)	121 × 39 × 39 mm
Package Size (L×W×H)	123 × 42 × 42 mm
Weight (Gross)	100g

CV Power Repeater LT-3637 - photo 1 — The LT-3637 CV Power Repeater, showing input and output terminals for power and PWM signal.

Application Scenarios

Large-Scale Architectural & Commercial Lighting Ideal for projects requiring long, continuous runs of LED strips, such as cove lighting in large halls, facade illumination, or extensive retail displays. The LT-3637 ensures the last strip in the chain is just as bright and responsive as the first.

System Integration & Retrofitting The perfect problem-solver when you need to connect new common cathode LED strips to an existing common anode controller system. This avoids the cost and complexity of replacing the entire control infrastructure.

Multi-Zone RGB Installations When a single RGB controller's power output is insufficient for multiple zones or very long strips, use the LT-3637 to add another power-injection point while keeping all zones perfectly synchronized.

How to Install & Use This Power Repeater

Ensure all power is disconnected before beginning installation.
Connect the output from your main LED controller to the 'Signal IN' terminals of the LT-3637. Ensure correct polarity.
Connect a separate, appropriately rated constant voltage DC power supply to the 'Power IN' terminals (V+, V-). The voltage (12V or 24V) must match your LED strips.
Wire your additional LED strips to the 'Signal OUT' terminals. The LT-3637 will output a common cathode signal, so connect the common wire of your strips to the V+ terminal and the individual color channels (R, G, B) to the corresponding CH1, CH2, CH3 terminals.
Double-check all connections at each power terminal and signal port.
Reconnect power and test the system. The new strips connected to the repeater should now operate in perfect sync with the strips connected to the main controller.

⚠ Precautions

Always use a power supply with a voltage that matches your LED strips (12V or 24V).
Do not exceed the maximum current load of 5A per channel or 15A total for the repeater.
Ensure proper ventilation around the unit to maintain optimal operating temperature.
This unit converts Common Anode input to Common Cathode output. Verify your components are compatible with this configuration.

What's in the Box

✓1 x LT-3637 CV Power Repeater
✓1 x User Manual

⇩ Downloads & Documents

PDFLT-3637

Frequently Asked Questions

Q: What is the primary function of the LT-3637 power repeater?

A:Its main purpose is to amplify a PWM control signal, allowing you to power long, extended runs of LED strips from an additional power supply while keeping them synchronized with the main controller.

Q: What makes the LT-3637 unique compared to other power repeaters?

A:Its standout feature is the built-in ability to convert a common anode input signal to a common cathode output, which solves compatibility problems between different types of LED strips and controllers.

Q: Can I use this for single-color LED strips?

A:Yes, absolutely. You can connect single-color LED strips to any of the three output channels, or connect up to three separate single-color strips.

Q: Is this repeater suitable for standard RGB LED strips?

A:Yes, the 3-channel design is perfectly suited for common cathode RGB LED strips, with one channel for each color (Red, Green, Blue).

Q: What kind of power supply is required?

A:You need a constant voltage DC power supply with an output voltage that matches your LED strips (either 12V or 24V) and enough wattage to handle the load of the connected strips.

Q: My LED light is not working but has power at the start of the strip. Can this help?

A:This can often be a symptom of voltage drop over a long strip. By installing a power repeater like the LT-3637 mid-run with a second power supply, you can restore full power and brightness to the entire length.

Q: How many LT-3637 repeaters can I daisy-chain?

A:In theory, you can chain multiple repeaters to create very long, synchronized lighting runs. Each repeater will require its own dedicated power supply.

CV Power Repeater LT-3637