اپتوالکترونیک ال ای دی آدرس‌پذیر و ویژه

Product Attributes

Introduction

T77 is an intelligent externally-controlled LED light source integrating control circuitry and light-emitting circuitry. It shares the same form factor as a 5050 LED, with each component serving as a single pixel. Internally, it incorporates a smart digital interface data latch signal reshaping amplification drive circuit, power regulation circuit, built-in constant current circuit, and high-precision RC oscillator. The output drive employs patented PWM technology to effectively ensure color consistency across pixels. The data protocol uses unipolar return-to-zero code communication. After power-on reset, the DIN pin receives data transmitted from the controller. The first 24 bits of incoming data are extracted by the first pixel and loaded into its internal data latch, while the remaining data is reshaped and amplified by the internal signal reshaping circuit, then forwarded via the DO port to the next cascaded pixel. Each pixel in the chain consumes 24 bits of data as the signal passes through. The LED offers advantages including low-voltage drive, eco-friendliness and energy efficiency, high brightness, wide scattering angle, excellent consistency, ultra-low power consumption, and exceptional lifespan. Integrating the control circuit directly into the LED simplifies the overall circuit design, reduces form factor, and eases installation.

Features

• Reverse polarity protection for both positive and negative terminals
• Integrated high-quality externally-controlled single-wire serial cascade constant-current IC
• Control circuit and die integrated in SMD5050 package, forming a complete externally-controlled pixel with uniform and consistent output
• Built-in data reshaping circuit; each pixel reshapes the waveform before forwarding, preventing cumulative waveform distortion along the line
• Built-in power-on reset and power-off reset circuits; LEDs default to OFF at power-up
• Integrated grayscale adjustment circuit (256-level adjustable grayscale)
• Special processing for red channel drive for more balanced color mixing
• Single-wire data transmission with unlimited cascade capability
• Reshape-and-forward enhancement technology; transmission distance between two nodes exceeds 10 meters
• Data transmission rate up to 800Kbps; cascade count no less than 1024 pixels at 30 frames/sec refresh rate

Applications

• LED full-color luminous letter light strings
• LED full-color modules
• LED magic color flexible/rigid light strips
• LED guardrail tubes
• LED landscape/scene lighting