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TLC5947DAPG4
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TLC5947DAPG4

Product Overview

Category

The TLC5947DAPG4 belongs to the category of integrated circuits (ICs) specifically designed for LED lighting applications.

Use

This product is primarily used for controlling and driving LEDs in various lighting systems, such as automotive lighting, signage, and architectural lighting.

Characteristics

  • High precision: The TLC5947DAPG4 offers 12-bit grayscale PWM control, allowing for precise brightness adjustment of individual LEDs.
  • Daisy-chainable: Multiple TLC5947DAPG4 ICs can be connected in a daisy-chain configuration, enabling control of a large number of LEDs with minimal wiring complexity.
  • Constant current output: It provides constant current sink outputs, ensuring consistent brightness levels across multiple LEDs.
  • Wide voltage range: The operating voltage range of this IC is from 3V to 5.5V, making it compatible with a wide range of power supply options.

Package

The TLC5947DAPG4 is available in a small form factor HTSSOP package, which facilitates easy integration into compact electronic designs.

Essence

The essence of the TLC5947DAPG4 lies in its ability to efficiently control and drive LEDs, enabling the creation of visually appealing lighting effects with high precision and flexibility.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specified quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

  • Supply Voltage: 3V to 5.5V
  • Number of Channels: 24
  • Grayscale Control: 12-bit PWM
  • Output Current: Up to 120 mA per channel
  • Communication Interface: Serial data input
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TLC5947DAPG4 features a 28-pin HTSSOP package with the following pin configuration:

  1. VPRG - Programming voltage input
  2. SIN - Serial data input
  3. SCLK - Serial clock input
  4. XLAT - Latch signal input
  5. BLANK - Output blanking control input
  6. GSCLK - Grayscale clock input 7-30. OUT0 to OUT23 - Constant current sink outputs for driving LEDs
  7. GND - Ground
  8. VCC - Supply voltage

Functional Features

1. Grayscale PWM Control

The TLC5947DAPG4 offers 12-bit grayscale PWM control, allowing precise adjustment of LED brightness levels. This feature enables smooth fading effects and accurate color mixing.

2. Daisy-Chaining Capability

Multiple TLC5947DAPG4 ICs can be daisy-chained together, simplifying the control of large LED arrays. This feature reduces the complexity of wiring and improves overall system scalability.

3. Constant Current Output

With constant current sink outputs, the TLC5947DAPG4 ensures consistent brightness across multiple LEDs, even when the supply voltage fluctuates. This feature eliminates the need for external current-limiting resistors.

4. Wide Operating Voltage Range

The operating voltage range of 3V to 5.5V makes the TLC5947DAPG4 compatible with various power supply options, enhancing its versatility in different lighting applications.

Advantages and Disadvantages

Advantages

  • High precision control of LED brightness
  • Daisy-chainable for easy scalability
  • Eliminates the need for external current-limiting resistors
  • Wide operating voltage range for compatibility

Disadvantages

  • Limited number of channels (24)
  • Requires additional components for thermal management in high-power applications

Working Principles

The TLC5947DAPG4 operates by receiving serial data input (SIN) and clock signals (SCLK) to control the grayscale PWM of each LED channel. The grayscale data is latched (XLAT) and then applied to the constant current sink outputs (OUT0 to OUT23) through a grayscale clock (GSCLK). This process ensures precise control of LED brightness levels.

Detailed Application Field Plans

The TLC5947DAPG4 finds applications in various fields, including:

  1. Automotive Lighting: Used for controlling LED headlights, taillights, and interior lighting systems in automobiles.
  2. Signage: Enables dynamic and eye-catching LED displays in advertising signage and billboards.
  3. Architectural Lighting: Provides control over LED fixtures used for accent lighting, façade illumination, and decorative purposes.
  4. Stage Lighting: Allows for sophisticated control of LED-based stage lighting setups, creating captivating visual effects.

Detailed and Complete Alternative Models

  1. TLC5940: Similar to the TLC5947DAPG4, but with 16 channels instead of 24.
  2. MAX7219: A versatile LED driver IC suitable for multip

Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan TLC5947DAPG4 dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of TLC5947DAPG4 in technical solutions:

  1. Q: What is the TLC5947DAPG4? A: The TLC5947DAPG4 is a 24-channel, constant-current sink LED driver that can be used to control LEDs in various applications.

  2. Q: What is the maximum current per channel that the TLC5947DAPG4 can handle? A: The TLC5947DAPG4 can handle a maximum current of 120 mA per channel.

  3. Q: Can the TLC5947DAPG4 be used to drive RGB LEDs? A: Yes, the TLC5947DAPG4 can be used to drive RGB LEDs by controlling the intensity of each color channel separately.

  4. Q: How many TLC5947DAPG4 devices can be daisy-chained together? A: Multiple TLC5947DAPG4 devices can be daisy-chained together to control a larger number of LEDs. The exact number depends on the specific application and power requirements.

  5. Q: What is the communication interface used to control the TLC5947DAPG4? A: The TLC5947DAPG4 uses a serial interface (SPI) for communication with a microcontroller or other control device.

  6. Q: Can the TLC5947DAPG4 be used in high-power LED applications? A: No, the TLC5947DAPG4 is designed for low to medium power LED applications. For high-power LED applications, a different LED driver with higher current handling capabilities should be used.

  7. Q: Does the TLC5947DAPG4 have built-in thermal protection? A: Yes, the TLC5947DAPG4 has built-in thermal shutdown protection to prevent overheating.

  8. Q: Can the TLC5947DAPG4 be used in automotive applications? A: Yes, the TLC5947DAPG4 is suitable for automotive applications as it can operate over a wide temperature range and has ESD protection.

  9. Q: What is the supply voltage range for the TLC5947DAPG4? A: The TLC5947DAPG4 operates with a supply voltage range of 3 V to 5.5 V.

  10. Q: Are there any evaluation boards or reference designs available for the TLC5947DAPG4? A: Yes, Texas Instruments provides evaluation boards and reference designs for the TLC5947DAPG4, which can help in the development and testing of applications using this LED driver.

Please note that these answers are general and may vary depending on the specific requirements and implementation of the TLC5947DAPG4 in different technical solutions.