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TLC5947DAP
Product Overview
Category
The TLC5947DAP belongs to the category of integrated circuits (ICs).
Use
It is primarily used for controlling LED displays and lighting systems.
Characteristics
- The TLC5947DAP is a 24-channel, constant-current sink driver.
- It has a grayscale PWM (Pulse Width Modulation) control feature.
- The device operates with a supply voltage ranging from 3V to 5.5V.
- It offers a high output current capability of up to 60mA per channel.
- The TLC5947DAP supports daisy-chaining multiple devices for expanded channel count.
- It incorporates thermal shutdown protection to prevent overheating.
Package
The TLC5947DAP is available in a 28-pin HTSSOP (Heat Sink Small Outline Package) package.
Essence
The essence of the TLC5947DAP lies in its ability to provide precise control over LED brightness levels, making it ideal for applications requiring dynamic lighting effects.
Packaging/Quantity
The TLC5947DAP is typically sold in reels containing 250 units per reel.
Specifications
- Supply Voltage: 3V to 5.5V
- Output Current: Up to 60mA per channel
- Number of Channels: 24
- Grayscale Control: 4096 steps
- Communication Interface: Serial (SPI)
- Operating Temperature Range: -40°C to +85°C
Detailed Pin Configuration
The pin configuration of the TLC5947DAP is as follows:
- VPRG - Programming Voltage Input
- SIN - Serial Data Input
- SCLK - Serial Clock Input
- XLAT - Latch Clock Input
- BLANK - Output Enable Input
- GND - Ground
- OUT0 - Channel 0 Output
- OUT1 - Channel 1 Output
- OUT2 - Channel 2 Output
- OUT3 - Channel 3 Output
- OUT4 - Channel 4 Output
- OUT5 - Channel 5 Output
- OUT6 - Channel 6 Output
- OUT7 - Channel 7 Output
- OUT8 - Channel 8 Output
- OUT9 - Channel 9 Output
- OUT10 - Channel 10 Output
- OUT11 - Channel 11 Output
- OUT12 - Channel 12 Output
- OUT13 - Channel 13 Output
- OUT14 - Channel 14 Output
- OUT15 - Channel 15 Output
- OUT16 - Channel 16 Output
- OUT17 - Channel 17 Output
- OUT18 - Channel 18 Output
- OUT19 - Channel 19 Output
- OUT20 - Channel 20 Output
- VCC - Supply Voltage Input
Functional Features
- Precise grayscale control for LED brightness adjustment.
- Daisy-chain capability for expanding the number of controlled channels.
- Thermal shutdown protection to prevent overheating and damage.
- Serial communication interface for easy integration with microcontrollers.
Advantages and Disadvantages
Advantages
- High output current capability allows driving a wide range of LEDs.
- Grayscale PWM control enables smooth and accurate brightness adjustments.
- Daisy-chaining feature simplifies the design of large LED display systems.
- Thermal shutdown protection ensures device reliability.
Disadvantages
- Limited to sink current operation only, not suitable for driving common anode LEDs.
- Requires external resistors for setting LED current levels.
- SPI communication interface may require additional hardware support in some applications.
Working Principles
The TLC5947DAP operates by receiving serial data through the SIN pin, which is then clocked in using the SCLK input. The grayscale control data determines the brightness level of each channel, and the XLAT pin latches the data to the output channels. The BLANK pin enables or disables the outputs.
Detailed Application Field Plans
The TLC5947DAP finds applications in various fields, including: 1. LED displays for signage and advertising. 2. Architectural lighting systems. 3. Automotive lighting, such as taillights and interior ambient lighting. 4. Entertainment and stage lighting. 5. Gaming machines and casino equipment. 6. Decorative lighting installations. 7. Industrial control panels with LED indicators.
Detailed and Complete Alternative Models
Some alternative models to the TLC5947DAP include: - MAX7219: A 24-channel LED driver with serial interface. - TLC59711: A 12-channel constant-current LED driver with integrated PWM control. - IS31FL3731: A 144-channel LED driver with grayscale control and I2C interface.
These alternative models offer similar functionality and can be considered based on specific application requirements.
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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan TLC5947DAP dalam solusi teknis
Sure! Here are 10 common questions and answers related to the application of TLC5947DAP in technical solutions:
Q: What is the TLC5947DAP? A: The TLC5947DAP is a 24-channel, constant-current sink LED driver that can be used to control LEDs in various applications.
Q: How many LEDs can the TLC5947DAP drive? A: The TLC5947DAP can drive up to 24 LEDs individually with its 24 channels.
Q: What is the maximum current per channel that the TLC5947DAP can handle? A: The TLC5947DAP can handle a maximum current of 120 mA per channel.
Q: Can the TLC5947DAP be cascaded to control more than 24 LEDs? A: Yes, multiple TLC5947DAPs can be cascaded together to control a larger number of LEDs.
Q: What is the communication interface used by the TLC5947DAP? A: The TLC5947DAP uses a serial interface (SPI) for communication with a microcontroller or other devices.
Q: Can the TLC5947DAP dim the LEDs? A: Yes, the TLC5947DAP supports 12-bit PWM control, allowing for smooth and precise dimming of the LEDs.
Q: What is the supply voltage range for the TLC5947DAP? A: The TLC5947DAP operates with a supply voltage range of 3 V to 5.5 V.
Q: Does the TLC5947DAP have built-in thermal shutdown protection? A: Yes, the TLC5947DAP has built-in thermal shutdown protection to prevent overheating.
Q: Can the TLC5947DAP be used in automotive applications? A: Yes, the TLC5947DAP is designed to meet the requirements of automotive applications and can operate in harsh environments.
Q: Are there any evaluation boards or reference designs available for the TLC5947DAP? A: Yes, Texas Instruments provides evaluation boards and reference designs that can help users get started with the TLC5947DAP in their applications.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.