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TLC5948PWPR
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TLC5948PWPR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: LED Driver
  • Characteristics: High-Precision, 16-Channel, Constant-Current PWM Sink Driver
  • Package: TSSOP-28
  • Essence: The TLC5948PWPR is a high-performance LED driver IC designed to control and drive LEDs in various applications.
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Number of Channels: 16
  • Output Current: Up to 120 mA per channel
  • Gray Scale: 4096 steps
  • Interface: Serial Data Input
  • Supply Voltage: 3.3V - 5.5V
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TLC5948PWPR has a TSSOP-28 package with the following pin configuration:

  1. VCC
  2. GND
  3. SIN
  4. SCLK
  5. XLAT
  6. BLANK
  7. GSCLK
  8. OUT0
  9. OUT1
  10. OUT2
  11. OUT3
  12. OUT4
  13. OUT5
  14. OUT6
  15. OUT7
  16. OUT8
  17. OUT9
  18. OUT10
  19. OUT11
  20. OUT12
  21. OUT13
  22. OUT14
  23. OUT15
  24. IREF
  25. VPRG
  26. DCPRG
  27. VPROG
  28. VLED

Functional Features

  • High-Precision LED Current Control
  • 16 Programmable Constant-Current Outputs
  • 12-Bit Grayscale PWM Control
  • Daisy-Chainable Interface for Multiple Devices
  • Internal Oscillator for PWM Control

Advantages and Disadvantages

Advantages: - Precise control of LED current - High grayscale resolution - Daisy-chainable interface simplifies wiring - Wide operating temperature range

Disadvantages: - Limited to driving LEDs only - Requires an external power supply for LEDs

Working Principles

The TLC5948PWPR uses pulse-width modulation (PWM) to control the brightness of LEDs. It provides 12-bit grayscale control, allowing smooth transitions between different brightness levels. The IC receives serial data input and converts it into individual LED current values, which are then applied to the corresponding outputs.

Application Field Plans

The TLC5948PWPR is widely used in various applications that require precise LED control, such as:

  1. LED Displays
  2. Automotive Lighting
  3. Architectural Lighting
  4. Signage
  5. Gaming Machines
  6. Decorative Lighting

Alternative Models

If the TLC5948PWPR does not meet specific requirements, alternative models with similar functionality include:

  1. TLC5947: 24-channel LED driver with higher output current capability.
  2. TLC59711: 12-channel LED driver with integrated constant-current sinks.
  3. MAX7219: LED driver with built-in display multiplexing capabilities.

These alternative models offer flexibility in terms of channel count, output current, and additional features.

In conclusion, the TLC5948PWPR is a high-performance LED driver IC that provides precise control over LED brightness. With its 16 programmable channels and high grayscale resolution, it is suitable for a wide range of applications requiring accurate LED illumination.

Lista 10 Vanliga frågor och svar relaterade till tillämpningen av TLC5948PWPR i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of TLC5948PWPR in technical solutions:

  1. Q: What is the TLC5948PWPR? A: The TLC5948PWPR is a 16-channel, constant-current sink LED driver that can be used for controlling LEDs in various applications.

  2. Q: What is the maximum current per channel that the TLC5948PWPR can handle? A: The TLC5948PWPR can handle a maximum current of 120 mA per channel.

  3. Q: Can the TLC5948PWPR be used with both common anode and common cathode LEDs? A: No, the TLC5948PWPR is designed to work with common cathode LEDs only.

  4. Q: How many TLC5948PWPR devices can be daisy-chained together? A: Multiple TLC5948PWPR devices can be daisy-chained together to control a larger number of LEDs. The exact number depends on the specific requirements of the application.

  5. Q: What is the communication interface used by the TLC5948PWPR? A: The TLC5948PWPR uses a serial interface (SPI) for communication with a microcontroller or other control device.

  6. Q: Can the TLC5948PWPR be used with both 3.3V and 5V microcontrollers? A: Yes, the TLC5948PWPR is compatible with both 3.3V and 5V microcontrollers.

  7. Q: Does the TLC5948PWPR require external resistors for current limiting? A: No, the TLC5948PWPR has built-in current limiting resistors for each channel, eliminating the need for external resistors.

  8. Q: Can the TLC5948PWPR be used for dimming LEDs? A: Yes, the TLC5948PWPR supports 12-bit grayscale PWM control, allowing for smooth and precise LED dimming.

  9. Q: What is the maximum clock frequency supported by the TLC5948PWPR? A: The TLC5948PWPR can support clock frequencies up to 30 MHz.

  10. Q: Can the TLC5948PWPR be used in automotive applications? A: Yes, the TLC5948PWPR is designed to operate in automotive environments and can withstand high temperatures and voltage fluctuations commonly found in automotive systems.

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