Maxim Integrated
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MAX6977AUE+T
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MAX6977AUE+T

Product Overview

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

Specifications

  • Supply Voltage Range: 3V to 5.5V
  • Maximum Output Current: 80mA per channel
  • Number of Channels: 16
  • Serial Interface: I²C-compatible
  • Dimming Control: 256-step logarithmic PWM (Pulse Width Modulation)
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

  1. VDD: Power supply voltage
  2. GND: Ground reference
  3. SDA: Serial data input/output for I²C communication
  4. SCL: Serial clock input for I²C communication
  5. OE: Output enable control
  6. DIN0-DIN15: Serial data inputs for LED display control
  7. VOUT: Output voltage for external logic
  8. VLED: LED power supply voltage
  9. AGND: Analog ground reference
  10. NC: No connection
  11. NC: No connection
  12. NC: No connection
  13. NC: No connection
  14. NC: No connection
  15. NC: No connection
  16. NC: No connection

Functional Features

  • High integration with 16-channel constant-current LED drivers
  • I²C-compatible serial interface for easy control and configuration
  • Logarithmic PWM dimming control for smooth brightness adjustment
  • Wide operating voltage range allows flexibility in power supply selection
  • Internal thermal shutdown protection prevents overheating

Advantages and Disadvantages

Advantages: - High-performance LED driver with precise current control - Flexible dimming options for optimal display brightness - Compact package size for space-constrained applications - Wide operating temperature range for reliable performance in various environments

Disadvantages: - Limited maximum output current per channel (80mA) - Requires external power supply for LED operation

Working Principles

The MAX6977AUE+T is an integrated LED display driver that efficiently controls the brightness of LED displays. It utilizes a serial interface (I²C-compatible) to communicate with a microcontroller or other controlling devices. The driver features 16 channels, each capable of driving up to 80mA of constant current to individual LEDs.

The logarithmic PWM dimming control allows smooth adjustment of the LED brightness by modulating the duty cycle of the PWM signal. This ensures accurate and flicker-free brightness levels across the entire dimming range.

The driver includes internal thermal shutdown protection, which safeguards against excessive heat buildup. This feature prevents damage to the IC and ensures reliable operation even in demanding conditions.

Detailed Application Field Plans

The MAX6977AUE+T LED display driver finds applications in various fields, including:

  1. Consumer Electronics: LED TVs, monitors, and digital signage
  2. Automotive: Dashboard displays, instrument clusters, and interior lighting
  3. Industrial Control Systems: Panel meters, process indicators, and control panels
  4. Medical Equipment: Patient monitoring displays and diagnostic devices
  5. Gaming and Entertainment: Slot machines, arcade games, and casino displays

Detailed and Complete Alternative Models

  1. MAX7219CNG+: Similar LED display driver with 8-channel capability
  2. TLC5940NT: LED driver with 16-channel capability and grayscale control
  3. HT16K33: Integrated LED controller and driver with I²C interface
  4. LP5024TL/NOPB: 24-channel LED driver with individual PWM control
  5. AS1130-BQFT: LED driver with 132-channel capability and matrix control

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

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af MAX6977AUE+T i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of MAX6977AUE+T in technical solutions:

  1. Q: What is the MAX6977AUE+T? A: The MAX6977AUE+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 MAX6977AUE+T? A: Each port of the MAX6977AUE+T can source up to 60mA of constant current.

  3. Q: Can the MAX6977AUE+T drive different types of LEDs? A: Yes, the MAX6977AUE+T can drive both common-anode and common-cathode LEDs.

  4. Q: How many LEDs can be controlled by a single MAX6977AUE+T? A: The MAX6977AUE+T can control up to 16 LEDs individually.

  5. Q: What is the communication interface used by the MAX6977AUE+T? A: The MAX6977AUE+T uses the I2C interface for communication with a microcontroller or other devices.

  6. Q: Can the MAX6977AUE+T dim the LEDs it drives? A: Yes, the MAX6977AUE+T supports individual PWM dimming for each LED port.

  7. Q: What is the supply voltage range for the MAX6977AUE+T? A: The supply voltage range for the MAX6977AUE+T is typically between 3V and 5.5V.

  8. Q: Is there any built-in thermal protection in the MAX6977AUE+T? A: Yes, the MAX6977AUE+T has built-in thermal shutdown protection to prevent overheating.

  9. Q: Can the MAX6977AUE+T be cascaded with other LED drivers? A: Yes, multiple MAX6977AUE+T devices can be cascaded together to control more than 16 LEDs.

  10. Q: What are some typical applications of the MAX6977AUE+T? A: The MAX6977AUE+T is commonly used in applications such as LED displays, signage, automotive lighting, and industrial control panels.

Please note that these answers are general and may vary depending on specific design considerations and requirements.