Texas Instruments
Imej mungkin representasi.
Lihat spesifikasi untuk butiran produk.
TLC5949PWP
Lihat Butiran Helaian data

TLC5949PWP

Product Overview

The TLC5949PWP is a 16-channel, constant-current sink, and PWM LED driver. It falls under the category of integrated circuits (ICs) and is commonly used for driving LEDs in various applications. The TLC5949PWP is known for its high efficiency, precise current control, and compatibility with a wide range of LED types. It is available in a TSSOP-24 package and is typically sold in reels of 2500 units.

Specifications

  • Number of Channels: 16
  • Package Type: TSSOP-24
  • Output Type: Constant Current
  • Interface: Serial
  • Supply Voltage: 3V to 5.5V
  • Maximum Output Current: 120mA per channel
  • Maximum Clock Frequency: 30MHz

Pin Configuration

The detailed pin configuration of the TLC5949PWP is as follows: 1. VCC 2. SIN 3. SCLK 4. XLAT 5. BLANK 6. GND 7. OUT0 8. OUT1 9. OUT2 10. OUT3 11. OUT4 12. OUT5 13. OUT6 14. OUT7 15. OUT8 16. OUT9 17. OUT10 18. OUT11 19. OUT12 20. OUT13 21. OUT14 22. OUT15 23. IREF 24. VPROG

Functional Features

The TLC5949PWP offers several functional features, including: - 16 channels of individually adjustable LED current - High grayscale PWM dimming control - Dot correction for accurate color display - Serial interface for easy control - Thermal shutdown protection

Advantages and Disadvantages

Advantages

  • Precise current control for each LED channel
  • High dimming resolution for smooth brightness transitions
  • Compatibility with a wide range of LED types
  • Thermal shutdown protection for enhanced safety

Disadvantages

  • Requires an external resistor for setting the maximum LED current
  • Limited to 16 channels, may not be suitable for larger LED arrays

Working Principles

The TLC5949PWP operates by receiving serial input data and using it to control the current sinking of individual LED channels. It utilizes a grayscale PWM control method to achieve precise brightness levels and incorporates dot correction to ensure consistent color reproduction. The device also includes thermal shutdown protection to prevent damage due to excessive heat.

Application Field Plans

The TLC5949PWP is well-suited for a variety of applications, including: - LED displays and signage - Architectural and decorative lighting - Automotive lighting systems - Gaming peripherals and accessories - Industrial control panels

Alternative Models

For those seeking alternatives to the TLC5949PWP, some options include: - TLC5947: A 24-channel LED driver with similar features - MAX7219: A serially interfaced LED driver with multiplexing capabilities - AS1130: A compact LED driver with integrated matrix control

In conclusion, the TLC5949PWP is a versatile LED driver offering precise current control, high dimming resolution, and thermal protection. Its compatibility with various LED types and applications makes it a popular choice for designers and engineers looking to implement efficient and reliable LED lighting solutions.

Word count: 476

Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi TLC5949PWP dalam penyelesaian teknikal

  1. What is the TLC5949PWP?

    • The TLC5949PWP is a 16-channel, constant-current sink driver with grayscale PWM control for LED displays.

  2. What is the maximum output current of the TLC5949PWP?

    • The TLC5949PWP can provide a maximum output current of 120 mA per channel.

  3. What is the supply voltage range for the TLC5949PWP?

    • The supply voltage range for the TLC5949PWP is typically 3 V to 5.5 V.

  4. How many bits of grayscale control does the TLC5949PWP support?

    • The TLC5949PWP supports 12-bit grayscale control for each channel.

  5. Can the TLC5949PWP be daisy-chained for controlling more than 16 channels?

    • Yes, the TLC5949PWP can be daisy-chained to control multiple devices and expand the number of controlled channels.

  6. What is the communication interface used by the TLC5949PWP?

    • The TLC5949PWP uses a serial interface (SPI) for communication with a microcontroller or other control device.

  7. Does the TLC5949PWP include thermal shutdown protection?

    • Yes, the TLC5949PWP includes thermal shutdown protection to prevent damage from excessive heat.

  8. What are some typical applications for the TLC5949PWP?

    • Typical applications include LED displays, LED signage, LED matrix panels, and other LED-based visual solutions.

  9. What is the maximum clock frequency supported by the TLC5949PWP?

    • The TLC5949PWP supports a maximum clock frequency of 30 MHz.

  10. Is there a reference design or application notes available for using the TLC5949PWP in technical solutions?

    • Yes, Texas Instruments provides reference designs and application notes to assist with integrating the TLC5949PWP into various technical solutions.