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TLC5917IDR
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TLC5917IDR

Product Overview

Category

TLC5917IDR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for driving LEDs (Light Emitting Diodes) in various applications.

Characteristics

  • TLC5917IDR is a 16-channel constant current LED driver.
  • It operates with a supply voltage range of 3 V to 5.5 V.
  • The device supports both dot correction and brightness control.
  • It offers a high output current accuracy of ±1.5%.
  • This IC has a thermal shutdown feature to prevent overheating.

Package

TLC5917IDR is available in a small outline package (SOIC) with 24 pins.

Essence

The essence of TLC5917IDR lies in its ability to efficiently drive multiple LEDs with precise current control, enabling accurate and uniform illumination.

Packaging/Quantity

The IC is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

  • Supply Voltage Range: 3 V to 5.5 V
  • Output Current Accuracy: ±1.5%
  • Number of Channels: 16
  • Thermal Shutdown Temperature: 165°C
  • Package Type: SOIC-24

Detailed Pin Configuration

The pin configuration of TLC5917IDR is as follows:

  1. GND (Ground)
  2. SDA (Serial Data Input)
  3. SCL (Serial Clock Input)
  4. OE (Output Enable)
  5. IREF (Reference Current)
  6. OUT0 (Channel 0 Output)
  7. OUT1 (Channel 1 Output)
  8. OUT2 (Channel 2 Output)
  9. OUT3 (Channel 3 Output)
  10. OUT4 (Channel 4 Output)
  11. OUT5 (Channel 5 Output)
  12. OUT6 (Channel 6 Output)
  13. OUT7 (Channel 7 Output)
  14. OUT8 (Channel 8 Output)
  15. OUT9 (Channel 9 Output)
  16. OUT10 (Channel 10 Output)
  17. OUT11 (Channel 11 Output)
  18. OUT12 (Channel 12 Output)
  19. OUT13 (Channel 13 Output)
  20. OUT14 (Channel 14 Output)
  21. OUT15 (Channel 15 Output)
  22. VCC (Supply Voltage)
  23. GND (Ground)
  24. GND (Ground)

Functional Features

  • Constant current output for driving LEDs.
  • Dot correction feature for precise brightness adjustment.
  • Serial interface for easy control and configuration.
  • Output enable pin for power-saving mode.
  • Thermal shutdown protection to prevent overheating.

Advantages and Disadvantages

Advantages

  • Accurate and uniform LED illumination.
  • High output current accuracy ensures consistent brightness.
  • Supports dot correction for precise brightness control.
  • Thermal shutdown feature protects the IC from overheating.

Disadvantages

  • Limited to driving LEDs and not suitable for other applications.
  • Requires external components for proper operation.

Working Principles

TLC5917IDR operates by receiving serial data through the SDA pin and clock signals through the SCL pin. The received data controls the output current of each channel, allowing precise control over the brightness of connected LEDs. The dot correction feature enables fine-tuning of individual LED brightness levels. The thermal shutdown mechanism safeguards the IC by disabling the outputs when the temperature exceeds the specified threshold.

Detailed Application Field Plans

TLC5917IDR finds applications in various fields, including:

  1. Automotive lighting systems
  2. Signage and display boards
  3. Backlighting for LCD panels
  4. Architectural lighting
  5. Entertainment lighting
  6. Industrial control panels
  7. Decorative lighting

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to TLC5917IDR are:

  1. MAX7219CNG
  2. TLC5940NT
  3. IS31FL3731
  4. PCA9685PW
  5. AS1130-BQFT

These models offer similar functionality and can be used as substitutes depending on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TLC5917IDR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TLC5917IDR in technical solutions:

  1. Q: What is TLC5917IDR? A: TLC5917IDR is a constant-current LED driver IC that can control up to 8 channels of LEDs.

  2. Q: What is the maximum current per channel that TLC5917IDR can handle? A: TLC5917IDR can handle a maximum current of 120 mA per channel.

  3. Q: Can TLC5917IDR be used with both common anode and common cathode LEDs? A: Yes, TLC5917IDR can be used with both common anode and common cathode LEDs.

  4. Q: How many TLC5917IDR devices can be cascaded together? A: Multiple TLC5917IDR devices can be cascaded together to control more than 8 channels of LEDs.

  5. Q: What is the communication interface used by TLC5917IDR? A: TLC5917IDR uses the I2C communication interface for control and configuration.

  6. Q: Can TLC5917IDR dim the LEDs connected to it? A: Yes, TLC5917IDR supports individual LED brightness control, allowing you to dim the LEDs.

  7. Q: What is the supply voltage range for TLC5917IDR? A: The supply voltage range for TLC5917IDR is typically between 3V and 5.5V.

  8. Q: Does TLC5917IDR have built-in thermal shutdown protection? A: Yes, TLC5917IDR has built-in thermal shutdown protection to prevent overheating.

  9. Q: Can TLC5917IDR be used in automotive applications? A: Yes, TLC5917IDR is suitable for automotive applications as it can operate in a wide temperature range.

  10. Q: Are there any evaluation boards or reference designs available for TLC5917IDR? A: Yes, Texas Instruments provides evaluation boards and reference designs to help with the implementation of TLC5917IDR in various applications.

Please note that these answers are general and may vary depending on the specific requirements and use cases. It's always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.