Texas Instruments
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TLC5917IPW
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TLC5917IPW

Product Overview

Category

TLC5917IPW belongs to the category of integrated circuits (ICs) specifically designed for LED driver applications.

Use

This product is primarily used for controlling and driving LEDs (Light Emitting Diodes) in various electronic devices and lighting systems.

Characteristics

  • TLC5917IPW is a 16-channel constant current LED driver.
  • It operates with a wide supply voltage range of 3V to 5.5V.
  • The device supports both dot correction and brightness control for precise LED illumination.
  • It offers a high output current capability of up to 120 mA per channel.
  • TLC5917IPW features a built-in thermal shutdown protection mechanism to prevent overheating.

Package

The TLC5917IPW is available in a TSSOP (Thin Shrink Small Outline Package) package, which provides compactness and ease of integration into circuit boards.

Essence

The essence of TLC5917IPW lies in its ability to efficiently drive multiple LEDs simultaneously while maintaining accurate brightness control and thermal protection.

Packaging/Quantity

The product is typically packaged in reels or tubes, containing a specific quantity of TLC5917IPW ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

  • Supply Voltage Range: 3V to 5.5V
  • Number of Channels: 16
  • Output Current per Channel: Up to 120 mA
  • Package Type: TSSOP
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TLC5917IPW features a total of 24 pins, each serving a specific function. Here is a detailed pin configuration:

  1. GND: Ground reference for the IC.
  2. VCC: Positive power supply input.
  3. SDA: Serial data input for communication.
  4. SCL: Serial clock input for communication. 5-20. OUT0-OUT15: Output pins for LED connections.
  5. IREF: Reference current input pin.
  6. VDD: Positive power supply input.
  7. OE: Output enable pin.
  8. GND: Ground reference for the IC.

Functional Features

  • Dot Correction: TLC5917IPW supports dot correction, allowing precise adjustment of individual LED brightness levels.
  • Brightness Control: The device enables accurate control of LED brightness through a serial interface.
  • Thermal Shutdown Protection: Built-in thermal shutdown protection prevents the IC from overheating, ensuring safe operation.

Advantages and Disadvantages

Advantages

  • High output current capability allows driving multiple LEDs with ease.
  • Wide supply voltage range provides flexibility in various applications.
  • Dot correction feature ensures uniform brightness across LEDs.
  • Thermal shutdown protection enhances reliability and safety.

Disadvantages

  • Limited to LED driver applications, not suitable for other types of integrated circuit applications.
  • Requires external components for proper operation, increasing overall system complexity.

Working Principles

TLC5917IPW operates by receiving control signals through the serial data (SDA) and serial clock (SCL) inputs. These signals are used to adjust the brightness levels of individual LEDs connected to the output pins. The dot correction feature allows fine-tuning of each LED's brightness, resulting in uniform illumination. The built-in thermal shutdown mechanism protects the IC from excessive heat, ensuring reliable performance.

Detailed Application Field Plans

The TLC5917IPW finds extensive use in various applications, including:

  1. Automotive Lighting Systems: Used for controlling LED headlights, taillights, and interior lighting in vehicles.
  2. Display Panels: Enables precise control of LED backlights in LCD displays.
  3. Architectural Lighting: Suitable for driving LEDs in decorative lighting fixtures and building facades.
  4. Signage and Advertising: Used in LED-based signage boards and billboards for vibrant and eye-catching displays.
  5. Consumer Electronics: Enables LED control in devices such as televisions, monitors, and gaming consoles.

Detailed and Complete Alternative Models

  1. TLC5916IPW: Similar to TLC5917IPW but with 15 channels instead of 16.
  2. TLC5940IPW: Offers 16 channels with enhanced grayscale control capabilities.
  3. MAX7219CNG: A different LED driver IC with multiplexing capabilities suitable for display applications.

These alternative models provide similar functionality and can be considered as alternatives to TLC5917IPW based on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TLC5917IPW v technických řešeních

Sure! Here are 10 common questions and answers related to the application of TLC5917IPW in technical solutions:

  1. Q: What is TLC5917IPW? A: TLC5917IPW 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 supported by TLC5917IPW? A: The maximum current per channel supported by TLC5917IPW is 120 mA.

  3. Q: Can TLC5917IPW be used with both common anode and common cathode LEDs? A: Yes, TLC5917IPW can be used with both common anode and common cathode LEDs.

  4. Q: How many TLC5917IPW devices can be cascaded together? A: Multiple TLC5917IPW devices can be cascaded together to control more than 8 channels of LEDs.

  5. Q: What is the communication interface used by TLC5917IPW? A: TLC5917IPW uses the I2C communication interface for control and configuration.

  6. Q: Can TLC5917IPW dim the LEDs connected to it? A: Yes, TLC5917IPW supports individual channel brightness control, allowing you to dim the LEDs.

  7. Q: Is there any built-in thermal protection in TLC5917IPW? A: Yes, TLC5917IPW has built-in thermal shutdown protection to prevent overheating.

  8. Q: Can TLC5917IPW operate from a wide range of power supply voltages? A: Yes, TLC5917IPW can operate from a power supply voltage range of 3 V to 5.5 V.

  9. Q: Does TLC5917IPW have any built-in fault detection features? A: Yes, TLC5917IPW has built-in open and short LED detection features for fault detection.

  10. Q: Can TLC5917IPW be used in automotive applications? A: Yes, TLC5917IPW is suitable for automotive applications as it can operate in a wide temperature range and has ESD protection.

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