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TLC5920DL
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TLC5920DL

Product Overview

Category

The TLC5920DL belongs to the category of integrated circuits (ICs).

Use

This IC is primarily used for driving LED displays and lighting applications.

Characteristics

  • The TLC5920DL is a high-performance, constant-current sink driver.
  • It is designed to control up to 16 channels of LEDs.
  • The IC offers a wide range of grayscale control with a 12-bit PWM (Pulse Width Modulation) resolution.
  • It supports both dot correction and global brightness control.
  • The TLC5920DL operates at a low voltage, making it suitable for battery-powered devices.
  • It has built-in thermal shutdown protection to prevent overheating.

Package

The TLC5920DL is available in a small outline package (SOP) with 24 pins.

Essence

The essence of the TLC5920DL lies in its ability to efficiently drive LED displays and lighting systems by providing precise current control and grayscale modulation.

Packaging/Quantity

The TLC5920DL is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

  • Supply Voltage: 3V to 5.5V
  • Maximum Output Current: 120mA per channel
  • Grayscale Control: 12-bit PWM resolution
  • Number of Channels: 16
  • Operating Temperature Range: -40°C to +85°C
  • Package Type: SOP-24

Detailed Pin Configuration

The TLC5920DL features a total of 24 pins, each serving a specific function. The pin configuration is as follows:

  1. GND: Ground
  2. OUT0: Channel 0 output
  3. OUT1: Channel 1 output
  4. OUT2: Channel 2 output
  5. OUT3: Channel 3 output
  6. OUT4: Channel 4 output
  7. OUT5: Channel 5 output
  8. OUT6: Channel 6 output
  9. OUT7: Channel 7 output
  10. OUT8: Channel 8 output
  11. OUT9: Channel 9 output
  12. OUT10: Channel 10 output
  13. OUT11: Channel 11 output
  14. OUT12: Channel 12 output
  15. OUT13: Channel 13 output
  16. OUT14: Channel 14 output
  17. OUT15: Channel 15 output
  18. VCC: Power supply voltage
  19. SOUT: Serial data output
  20. SIN: Serial data input
  21. XLAT: Latch signal input
  22. BLANK: Blank signal input
  23. GSCLK: Grayscale clock input
  24. GND: Ground

Functional Features

  • Precise current control for driving LED displays and lighting systems.
  • Wide grayscale control range for smooth brightness transitions.
  • Dot correction capability for accurate color reproduction.
  • Global brightness control for overall luminance adjustment.
  • Low voltage operation for compatibility with various power sources.
  • Thermal shutdown protection to prevent overheating.

Advantages and Disadvantages

Advantages

  • High-performance constant-current sink driver.
  • Supports up to 16 channels of LEDs.
  • Wide grayscale control range.
  • Built-in thermal shutdown protection.

Disadvantages

  • Limited to driving LEDs and not suitable for other applications.
  • Requires external components for complete LED display or lighting system implementation.

Working Principles

The TLC5920DL operates by receiving serial data input (SIN) and clock signals (GSCLK) to control the current flowing through each channel. The grayscale control is achieved using a 12-bit PWM resolution, allowing precise control over the brightness levels of individual LEDs. The dot correction feature enables accurate color reproduction by adjusting the current levels for each LED. The IC also provides global brightness control and thermal shutdown protection to ensure safe and efficient operation.

Detailed Application Field Plans

The TLC5920DL finds extensive application in various fields, including:

  1. LED displays for advertising boards and signage.
  2. Indoor and outdoor lighting systems.
  3. Automotive lighting, such as taillights and dashboard indicators.
  4. Decorative lighting for events and venues.
  5. Backlighting for LCD panels and keypads.
  6. Architectural lighting for buildings and landscapes.
  7. Stage and theater lighting.

Detailed and Complete Alternative Models

  • MAX7219: LED display driver with serial interface.
  • TLC5940: 16-channel LED driver with grayscale control.
  • IS31FL3731: Matrix LED driver with built-in PWM control.
  • HT16K33: I2C-controlled LED driver with keyscan function.
  • TLC59711: High-current LED driver with 12-bit grayscale control.

These alternative models offer similar functionality and can be considered as alternatives to the TLC5920DL based on specific requirements and application needs.

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10 domande e risposte comuni relative all'applicazione di TLC5920DL nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of TLC5920DL in technical solutions:

  1. Q: What is TLC5920DL? A: TLC5920DL is a constant current LED driver that can control up to 16 channels of LEDs.

  2. Q: What is the maximum output current of TLC5920DL? A: The maximum output current per channel of TLC5920DL is 120 mA.

  3. Q: Can TLC5920DL be used with both common anode and common cathode LEDs? A: Yes, TLC5920DL can be used with both common anode and common cathode LEDs.

  4. Q: How many TLC5920DL devices can be cascaded together? A: Multiple TLC5920DL devices can be cascaded together to control more than 16 channels of LEDs.

  5. Q: What is the communication interface used by TLC5920DL? A: TLC5920DL uses a serial interface (SPI) for communication with a microcontroller or other devices.

  6. Q: Can TLC5920DL dim the LEDs? A: Yes, TLC5920DL supports individual channel brightness control, allowing you to dim the LEDs.

  7. Q: What is the supply voltage range for TLC5920DL? A: The supply voltage range for TLC5920DL is typically between 3V and 5.5V.

  8. Q: Does TLC5920DL have built-in thermal shutdown protection? A: Yes, TLC5920DL has built-in thermal shutdown protection to prevent overheating.

  9. Q: Can TLC5920DL drive high-power LEDs? A: TLC5920DL is designed for driving low to medium power LEDs. For high-power LEDs, additional external drivers may be required.

  10. Q: Are there any application examples for TLC5920DL? A: Yes, TLC5920DL can be used in various applications such as LED displays, signage, decorative lighting, and automotive lighting.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.