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MAX6978AUE+T
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MAX6978AUE+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: LED Display Driver
  • Characteristics: High-performance, low-power, serial-interfaced, 16-channel constant-current LED driver
  • Package: 16-pin TSSOP (Thin Shrink Small Outline Package)
  • Essence: Efficiently drives LEDs in various applications
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 3V to 5.5V
  • Output Current Range: 5mA to 40mA per channel
  • Serial Interface: I²C-compatible
  • Maximum Clock Frequency: 400kHz
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MAX6978AUE+T has a 16-pin TSSOP package with the following pin configuration:

  1. GND: Ground
  2. SDA: Serial Data Input
  3. SCL: Serial Clock Input
  4. VDD: Power Supply
  5. OUT15: Channel 15 Output
  6. OUT14: Channel 14 Output
  7. OUT13: Channel 13 Output
  8. OUT12: Channel 12 Output
  9. OUT11: Channel 11 Output
  10. OUT10: Channel 10 Output
  11. OUT9: Channel 9 Output
  12. OUT8: Channel 8 Output
  13. OUT7: Channel 7 Output
  14. OUT6: Channel 6 Output
  15. OUT5: Channel 5 Output
  16. OUT4: Channel 4 Output

Functional Features

  • 16-channel constant-current LED driver
  • Individual PWM (Pulse Width Modulation) control for each channel
  • Programmable current levels for each channel
  • Internal oscillator for PWM generation
  • Built-in fault detection and protection features
  • Low-power shutdown mode for power saving

Advantages and Disadvantages

Advantages: - High-performance LED driver with precise current control - Flexible and programmable PWM control for each channel - Wide operating voltage range allows compatibility with various systems - Built-in fault detection enhances system reliability - Low-power shutdown mode helps conserve energy

Disadvantages: - Limited to 16 channels, may not be suitable for applications requiring more channels - Requires an external microcontroller or host device for serial communication

Working Principles

The MAX6978AUE+T is a serial-interfaced LED display driver that efficiently drives LEDs in various applications. It utilizes a constant-current output to ensure consistent brightness across all connected LEDs. The device communicates with an external microcontroller or host device through the I²C-compatible serial interface.

By individually controlling the PWM signals for each channel, the MAX6978AUE+T enables precise dimming and brightness adjustment of the connected LEDs. The built-in fault detection circuitry provides protection against overtemperature, open/shorted LED conditions, and undervoltage events.

Detailed Application Field Plans

The MAX6978AUE+T finds applications in various fields, including but not limited to: - LED matrix displays - LED signage - Automotive lighting - Industrial control panels - Gaming machines - Medical equipment - Consumer electronics

Detailed and Complete Alternative Models

  1. TLC5940: 16-channel LED driver with grayscale control
  2. MAX7219: LED display driver with integrated multiplexing and scanning capabilities
  3. HT16K33: 16-channel LED driver with keyscan function
  4. LP5024: 24-channel LED driver with individual PWM control
  5. AS1130: 132-channel LED driver with advanced pattern generation features

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi MAX6978AUE+T dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of MAX6978AUE+T in technical solutions:

  1. Q: What is the MAX6978AUE+T? A: The MAX6978AUE+T is a 16-port constant-current LED driver with an I2C interface, commonly used for driving LEDs in various applications.

  2. Q: What is the maximum current that can be sourced by each port of the MAX6978AUE+T? A: Each port of the MAX6978AUE+T can source up to 60mA of constant current.

  3. Q: Can the MAX6978AUE+T drive different types of LEDs? A: Yes, the MAX6978AUE+T can drive both common-anode and common-cathode LEDs.

  4. Q: How many LEDs can be controlled by a single MAX6978AUE+T? A: The MAX6978AUE+T can control up to 16 LEDs individually.

  5. Q: What is the supply voltage range for the MAX6978AUE+T? A: The supply voltage range for the MAX6978AUE+T is typically between 2.7V and 5.5V.

  6. Q: Can the MAX6978AUE+T dim the LEDs? A: Yes, the MAX6978AUE+T supports individual LED brightness control through its I2C interface.

  7. Q: Is there any built-in protection in the MAX6978AUE+T? A: Yes, the MAX6978AUE+T has built-in thermal shutdown and overvoltage protection features.

  8. Q: Can the MAX6978AUE+T operate in a daisy-chain configuration? A: Yes, multiple MAX6978AUE+T devices can be connected in a daisy-chain configuration to control more than 16 LEDs.

  9. Q: What is the maximum clock frequency supported by the I2C interface of the MAX6978AUE+T? A: The I2C interface of the MAX6978AUE+T supports clock frequencies up to 400kHz.

  10. Q: Are there any evaluation boards or reference designs available for the MAX6978AUE+T? A: Yes, Maxim Integrated provides evaluation kits and reference designs that can help in the application of the MAX6978AUE+T in various technical solutions.

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