TM512AC4 DMX512 Differential Parallel Protocol LED Driver Chip
TM512AC4 is a high-performance DMX512 differential parallel protocol LED driver chip featuring constant 4-channel high-precision current output. It comes with decoding and forwarding capabilities, converting the data through a DO output to a single-wire 800Kbps zero-code signal. The DO output data can directly control our 800Kbps rate ICs, forwarding up to 192 channels of data.
The TM512AC4 utilizes precise decoding technology to decode DMX512 signals. It is compatible with and extends DMX512 protocol signals. This chip automatically adapts to DMX512 signal transmission speeds ranging from 200Kbps to 1000Kbps without the need for manual speed settings. It supports addressing up to 4096 channels. The chip features a built-in EEPROM, eliminating the need for external EEPROM components and supports online code writing.
TM512AC4 provides 4 high-precision constant current output channels with a voltage tolerance of up to 30V, each capable of handling currents between 3mA and 80mA. PWM reverse polarity frequency reduction is also available to improve system performance.
TM512AC4 is designed primarily for building decoration and stage lighting effects in LED lighting systems, where the failure of one chip does not affect the functioning of others, simplifying maintenance.
Key Features:
- Compatible with DMX512 (1990) signal protocol
- Up to 4096 channels for addressing
- Adaptive to DMX512 transmission speeds between 200Kbps to 1000Kbps
- Forwarding mode: Pure forwarding, compatible with 800Kbps rate ICs (such as TM1804, TM1925D)
- Built-in EEPROM for easy programming and eliminates external components
- PWM reverse polarity frequency reduction function with 500Hz refresh rate
- PWM256 gray-scale control for precise dimming
- Built-in 5V voltage regulator for stable operation
- Supports manual current adjustment with external resistor (3mA to 80mA per channel)
- Reliable industrial-grade design ensuring high performance and stability
Specification Table:
| Feature | Specification |
|---|---|
| Protocol | DMX512 (Differential Parallel) |
| Control Method | Differential Parallel, Supports up to 4096 Channels |
| Transmission Speed | 200Kbps – 1000Kbps |
| Forwarding Mode | Pure forwarding (no direct lighting), compatible with TM1804, TM1925D |
| Built-in EEPROM | Yes (No external EEPROM required) |
| PWM Functionality | Reverse Polarity Frequency Reduction (500Hz refresh rate) |
| PWM Gray-scale Control | PWM256 Level |
| Current Output Channels | OUTR, OUTG, OUTB, OUTW (30V tolerance) |
| Current Range per Channel | 3mA – 80mA (Adjustable with external resistor) |
| Address Backup | Dual E2 Address Code Backup |
| Voltage Regulation | Built-in 5V Regulator |
| Startup LED Indication | Blue light for self-check, white light after successful code writing |
| Delay Function | Progressive output channel delay to reduce interference |
| Package Type | SSOP16 |
| Power Consumption | Low power consumption, optimized for efficient energy use |
| Industrial Design | Yes, stable and reliable performance |
Applications:
- Point light sources
- Linear lights
- Wall washing lights
- Stage lighting systems
- Indoor and outdoor video walls
- Decorative lighting systems
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