Overview

The SK6818-T52491H4RGBWP6-VC-XW-E-A-000 is a highly integrated, top-face luminescent SMD (Surface-Mount Device) RGBW LED produced by Shenzhen Normand Electronic Co.,Ltd. This advanced component combines high-quality RGB and White LED chips with an integrated control IC (the 68-series SK6818) into a single, compact 6-pin package. Designed for a 24V operating environment, it provides a streamlined and efficient solution for dynamic lighting and consumer electronics requiring both vibrant color and high-quality white light output.

Key Features

· Operating Voltage & Current: 24V operation. Default output current is 17mA (OUT RGBW), but practical use recommends 7mA. Specific usage notes: use 7mA for monochromatic light, 70% of 5mA (3.5mA) for RGB mode, and 50% of 3.5mA for RGBW mode.

· Communication Protocol: Utilizes a single-line zero-code transmission protocol, allowing for infinite cascading of units.

· Data Transmission: Supports a data transmission frequency of up to 800 Kbps. When operating at a refresh rate of 30 frames per second, the cascade number is less than 1024 points.

· Grayscale Control: Offers 256 levels of grayscale adjustment for smooth color transitions.

· Viewing Angle: 120° typical viewing angle.

· Built-in Reset: An integrated reset circuit ensures the LED does not light up unexpectedly upon power-up.

· ESD Protection: 2KV ESD withstand voltage (Human Body Mode).

· Moisture Sensitivity: MSL Level 5a.

· Compliance: Fully RoHS and REACH compliant.

Applications

This versatile LED component is primarily targeted at the consumer electronics market (SMT), where compact size, reliable data transmission, and vibrant color output are required.

Mechanical and Pin Configuration

The device features a compact footprint with dimensions of 5.2 x 4.9 x 1.4 mm (Length x Width x Height). It utilizes a 6-pin (P6) configuration:

· Pin 1 & 6: GND (Ground)

· Pin 2: DIN (Data Input)

· Pin 3 & 4: VDD (Power Supply, 24V)

· Pin 5: DOUT (Data Output)

This pinout facilitates straightforward cascading, where the DOUT of one LED connects directly to the DIN of the next, forming a continuous data chain.

Electrical and Optical Characteristics

Electrical Parameters (Ta=25℃)

· Logic Supply Voltage (VDD): 20V to 24V (Operating range: 21V to 25.5V).

· Output Drive Current: 17mA typical (default), 7mA recommended for practical use (VDS=1.0~3.0V).

· PWM Frequency: 1.2 KHz typical.

· Static Power Consumption: 1.2mA (VDD=4.5V, outputs off).

· Operating Temperature: -40℃ to +80℃.

· Storage Temperature: -40℃ to +80℃.

Optical Parameters

The LED delivers bright and consistent illumination across the RGBW spectrum. The product is available in three white light color temperature variants:

· Red: Wavelength 620-630nm, Brightness 1275-1800 mcd

· Green: Wavelength 520-530nm, Brightness 5800-7550 mcd

· Blue: Wavelength 460-470nm, Brightness 450-815 mcd

· White (BW): Color Temperature 5500-9900K

· White (NW): Color Temperature 3900-4200K

· White (WS): Color Temperature 2800-3200K, Brightness 6237.5-8125 mcd
(Note: Brightness tolerance is ±10%, dominant wavelength tolerance is ±1.0nm, and color temperature tolerance is ±100K. Ra > 80±2.)

Data Transmission and Protocol

The IC employs a unipolar zero-code protocol. Each symbol begins with a high level, and the duration of this high level determines whether the bit is a "0" or a "1".

Timing Specifications

· Symbol Period (T): 1.20 μs (Minimum 0.9 μs, Maximum 20 μs).

· "0" Code: High-level time 0.30 μs (range 0.20-0.40 μs); Low-level time 0.90 μs (range 0.70 μs min).

· "1" Code: High-level time 0.90 μs (range 0.70-1.00 μs); Low-level time 0.30 μs (range 0.20 μs min).

· Reset Code: Low-level time must be greater than 200 μs to reset the data pipeline.

Data Structure

Data is transmitted in 32-bit packets, sent most significant bit (MSB) first, in GRBW order (G7→G6→...→G0, R7→R6→...→R0, B7→B6→...→B0, W7→W6→...→W0). The first group of data sent by the MCU is automatically reshaped and forwarded to subsequent LEDs in the cascade.

Conclusion

The SK6818-T52491H4RGBWP6-VC-XW-E-A-000 is a robust, high-performance intelligent RGBW LED solution. Its integration of the driver IC, support for 24V operation, and reliable single-line cascading protocol make it an excellent choice for designers looking to implement complex, large-scale lighting effects in consumer electronics and decorative lighting applications. For the most up-to-date specifications, users should consult the official Normand website(www.normandled.com).