Overview
The TLC5971PWPR, produced by Texas Instruments, is a 12-channel, 16-bit enhanced spectrum PWM RGB LED driver. This device is designed to provide high precision and flexibility in controlling LED lighting systems. It features a constant-current sink driver with 16-bit grayscale control for each channel, allowing for 65536 steps of current adjustment. The device also includes global brightness control and an internal 3.3-V linear regulator, making it suitable for a wide range of LED lighting applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 12 | - |
| Grayscale Steps per Channel | 65536 | - |
| Global Brightness Control Steps per Color Group | 128 | - |
| Constant-Current Capability per Channel | 60 mA | mA |
| Power-Supply Voltage Range | 6 V to 17 V (Internal Linear Regulator), 3 V to 5.5 V (Direct Power Supply) | V |
| LED Supply Voltage | Up to 17 V | V |
| Constant-Current Accuracy (Channel-to-Channel) | ±1% (Typical) | % |
| Constant-Current Accuracy (Device-to-Device) | ±1% (Typical) | % |
| Data Transfer Rate | 20 MHz | MHz |
| Operating Temperature Range | -40°C to +85°C | °C |
| Thermal Shutdown Temperature | 150°C to 180°C | °C |
Key Features
- 12 constant-current sink output channels with 16-bit grayscale control (65536 steps) for each channel.
- Global brightness control with 7-bit (128 steps) for each color group.
- Internal 3.3-V linear regulator.
- Power-supply voltage range: 6 V to 17 V (internal linear regulator) and 3 V to 5.5 V (direct power supply).
- LED supply voltage up to 17 V.
- High constant-current accuracy: ±1% (typical) channel-to-channel and device-to-device.
- Data transfer rate of 20 MHz.
- Auto display repeat function and display timing reset function.
- Internal and external selectable grayscale clock.
- Thermal shutdown with auto restart.
- Unlimited device cascading.
Applications
The TLC5971PWPR is suitable for various LED lighting applications, including:
- RGB LED cluster lamp displays.
- Large-scale LED installations requiring high precision and control.
- Automotive lighting systems.
- Industrial lighting solutions.
- Consumer electronics with advanced LED lighting features.
Q & A
- What is the number of channels supported by the TLC5971PWPR?
The TLC5971PWPR supports 12 channels.
- What is the grayscale resolution for each channel?
Each channel has a 16-bit grayscale resolution, allowing for 65536 steps of current adjustment.
- What is the global brightness control resolution?
The global brightness control has a 7-bit resolution, providing 128 steps for each color group.
- What is the maximum constant-current capability per channel?
The maximum constant-current capability per channel is 60 mA.
- What is the operating temperature range of the TLC5971PWPR?
The operating temperature range is -40°C to +85°C.
- Does the TLC5971PWPR have thermal shutdown protection?
- Can multiple TLC5971PWPR devices be cascaded?
- What is the data transfer rate of the TLC5971PWPR?
The data transfer rate is 20 MHz.
- Does the TLC5971PWPR have an internal linear regulator?
- What are some typical applications of the TLC5971PWPR?
Typical applications include RGB LED cluster lamp displays, large-scale LED installations, automotive lighting systems, industrial lighting solutions, and consumer electronics with advanced LED lighting features.
