External IC 15M ULTRA-LONG CC SMD2835 LED STRIP

Description

About the Super Long Constant Current LED Strip

The super-long constant current (CC) led strip light, also called long run led strip light, can achieve 50 meters, 30 meters, 20 meters, 15 meters per reel, and only needs to be connected to the power supply on one end, and the brightness of the beginning and the end are the same.
Super-long constant current led strips usually use thicker PCBs, such as 3 ounces or 4 ounces, and there will be constant current ICs on the PCB or ICs inside the LED.

Why you need Super Long Constant Current LED Strip?

Are you looking for the longest led strip lights? The constant current long run led strip light can be 50 meters for one end connected with power supply, 100 meters for both end connected power supply.

The super-long constant current led tape mainly solves uneven brightness at the beginning and end of the led tape due to the voltage drop. The constant voltage 24Vdc led tape can only be 5 meters long by one end power input. If it exceeds 5 meters, there will be a voltage drop problem. To avoid the voltage drop problem, the wiring diagram of the constant voltage led strip is as follows

                                                                                                        CC Wire Diagram

The wiring diagram of the super long constant current led strip is straightforward, as shown below:
Therefore, the super long constant current led strip wiring is more spartan can save installation time and cost.

                                                                                          Super Long Constant Current LED Strip

How Does The Super Long Constant Current LED Strip Work?

LED strip voltage drop is because when the current passes through the PCB, and the PCB itself has resistance, the resistance of the PCB will consume part of the voltage and convert the electrical energy into thermal energy.
PCB resistance is related to the size of the cross-section (corresponding to the PCB board width and copper thickness). The larger the PCB cross-section, the smaller the resistance, and the longer the PCB length, the greater the resistance.

U drop = I * R (Udrop is called IR-Drop)
P = I * Udrop (P is the power converted from electrical to thermal energy)

According to the following schematic diagram, the farther away from the power supply, the lower the voltage. If it is a constant voltage led strip, the voltage will decrease, and the brightness of the LEDs will decrease accordingly. However, by adding constant current IC components to the circuit, the super long constant current led strip can ensure that the current through the LED can be kept constant within a specific voltage range (for example, 24V~20V) so that the brightness of the LED is consistent.   

Constant Current LED Strip for you to choose

The extra long constant current led strip can be 10 meters, 15 meters, 20 meters, 30 meters, 50 meters. And there are warm white, tunable white, RGB, RGBW, RGBTW for your choose.

Actually We have two types of constant current long run led strip.

IC External Super-Long Constant Current LED Strip

The external IC super-long constant current led strip can easily adjust the current, but the IC size is a little large, so the it is small density of the LEDs, and the width is not as narrow as the built-in IC constant current led strip.

IC Built-In Super-Long Constant Current LED Strip

Built-in IC super-long constant current led strip, the IC size is very tiny, built inside of  the leds, it does not take up the space of the PCB, so the leds can be made in high density, up to 300LEDs/m, and the width can be made very narrow. Up to 5mm wide. But the built-in IC super-long constant current led strip is limited to only a few fixed currents, and it does not support to adjust the current.