TM512ADH DMX512 LED Driver IC with High-Precision Constant Current Output

TM512ADH DMX512 LED Driver IC with High-Precision Constant Current Output

The TM512ADH is a DMX512 differential parallel protocol LED driver chip designed for high-precision constant current output. It features 1 to 4 channels with adjustable current, offering up to 65536 levels of grayscale. This model is specifically designed for high current applications, featuring a heat sink package to ensure optimal performance in demanding conditions. The TM512ADH series provides precise decoding of DMX512 signals and supports the expansion of up to 512 protocol signals. It fully supports data transmission speeds from 200Kbps to 1000Kbps, requiring no rate setting, and supports addressing up to 4096 channels.

Equipped with integrated EEPROM, the TM512ADH eliminates the need for external memory components. It supports online programming via AB line writing, which simplifies installation and reduces wiring complexity. Additionally, it allows for parameter settings (such as power-up lighting status, field selection, and current adjustments) without the need to disconnect or reconnect the device. The TM512ADH offers four output channels capable of handling voltages up to 28V and providing constant current outputs of up to 200mA per channel.

The chip also features PWM reverse polarity output and RGBW time compensation functions, allowing it to handle higher current drivers like transistors and MOSFETs. It supports a 4K refresh rate, ensuring smooth operation with high-quality visual effects.

This chip is ideal for applications in architectural lighting and stage lighting systems, where reliability and ease of maintenance are paramount. The TM512ADH ensures that a failure in one chip does not affect others in the system, making it suitable for large, complex installations.

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Key Features of TM512ADH:

• DMX512 Protocol Compatibility: Fully compatible with DMX512 (1990) signal protocol and supports up to 512 signals, with easy expansion.
• Control Mode: Differential parallel control, supports up to 4096 channels addressing.
• High-Speed Adaptive Decoding: Precision decoding for DMX512 signals with transmission speeds from 200Kbps to 1000Kbps without the need for rate adjustment.
• Integrated 485 Module: High differential signal resolution with large input impedance for enhanced load capacity.
• Internal Pull-up Resistor on AI Pin: Provides interference immunity when the AIBI line is floating.
• Online Code Writing: Supports online code writing via AB lines, with a maximum wiring distance limited by the AIBI bus.
• Parameter Writing Capabilities: Allows independent parameter settings without re-writing codes, such as:
  • Power-up lighting state (custom RGBW output combinations).
  • Field selection (choose 1, 2, or 4 fields for reduced data transmission during expansion).
  • No signal lighting state (define whether the last frame or power-up color should be displayed when no signal is received).
  • Current adjustment levels (64 levels of independent current control).
• RGBW Constant Current Output: Each channel supports 10mA to 200mA current output with adjustable external resistors.
• Precise Current Control: ±3% chip-to-chip accuracy for high-precision constant current control.
• PWM Reverse Polarity Function: Supports PWM reverse polarity, ideal for driving external power devices like transistors or high-current drivers.
• 4K Refresh Rate: Supports refresh rates up to 4kHz, ensuring smooth visuals in dynamic lighting displays.
• Integrated 5V Regulator: Simplifies power supply design.
• High Voltage Tolerance: Output ports support voltages greater than 30V.
• Built-in Over-Temperature Protection: Ensures safe operation in high-temperature environments.
• Output Channel Hysteresis: 80ns delay reduces power surge interference.
• Low Voltage Operation: Enhanced stability, allowing operation at voltages as low as 2.5V for better power system stability.

Specifications:

Parameter	Value
Control Mode	Differential Parallel, up to 4096 channels addressing
Transmission Speed	200Kbps to 1000Kbps (adaptive decoding)
Output Channels	1 to 4 (OUTR, OUTG, OUTB, OUTW)
Grayscale Control	Up to 65536 levels (with gamma correction 2.2)
Current Output per Channel	10mA to 200mA (adjustable with external resistor)
Refresh Rate	Up to 4kHz (in frequency expansion mode)
Built-in 5V Regulator	Yes
Maximum Output Voltage	30V
Current Accuracy	±3% between chips and channels
PWM Reverse Polarity Output	Yes
Over-Temperature Protection	Yes
Power-Up State Selection	Yes (select RGBW output combinations)
External Resistor Control	Yes (for current adjustment)
Frequency Expansion Modes	250Hz, 500Hz, 1kHz, 2kHz, 4kHz
Field Selection	Yes (1, 2, or 4 fields for reduced data transmission)
Low Voltage Operation	2.5V stable operation
Package Type	ESOP16
Interference Protection	Built-in module for enhanced immunity
Channel Hysteresis	80ns delay

Applications:

• Point Light Sources: Ideal for decorative and point light applications.
• Linear Lights & Wall Wash Lights: Suitable for linear lighting and wall-washing effects.
• Stage Lighting Systems: Designed for high-end lighting effects in performance venues.
• Indoor/Outdoor Video Walls: Perfect for large-scale video display applications.
• Architectural Lighting: Ideal for dynamic lighting in architectural designs and structures.

Package Options:

• ESOP16

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Why Choose TM512ADH?

• High-Precision Current Control: Offers precise, adjustable current for demanding LED applications.
• Flexible Parameters & Easy Integration: Online programming, parameter setting, and field selection for customization.
• Superior Performance for Large-Scale Installations: High refresh rate, large voltage tolerance, and high current output capability.
• Reliable and Stable: Built-in protections and high immunity to interference make it perfect for professional lighting systems.

The TM512ADH is an ideal solution for complex and high-performance lighting systems, offering advanced features like high-resolution grayscale control, flexible current settings, and robust signal decoding. Whether for architectural lighting or stage effects, it ensures exceptional visual quality and reliability.