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M5451QT
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M5451QT

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: LED Display Driver
  • Characteristics: High current sinking capability, Serial input control, Daisy-chainable
  • Package: 24-pin Quad Flat Package (QFP)
  • Essence: Efficiently drives LED displays with minimal external components
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Supply Voltage: 3.3V to 5.5V
  • Maximum Output Current: 500mA per channel
  • Number of Channels: 35
  • Serial Data Input: Shift register with latch
  • Clock Frequency: Up to 25MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The M5451QT IC has a total of 24 pins, which are assigned as follows:

  1. VDD - Power supply voltage
  2. GND - Ground
  3. SDI - Serial data input
  4. CLK - Clock input
  5. LE - Latch enable input
  6. OE - Output enable input 7-11. Q0-Q4 - Channel outputs 0 to 4 12-16. Q5-Q9 - Channel outputs 5 to 9 17-21. Q10-Q14 - Channel outputs 10 to 14 22-26. Q15-Q19 - Channel outputs 15 to 19 27-31. Q20-Q24 - Channel outputs 20 to 24 32-36. Q25-Q29 - Channel outputs 25 to 29 37-41. Q30-Q34 - Channel outputs 30 to 34

Functional Features

  • High current sinking capability allows driving of large LED displays
  • Serial input control simplifies interfacing with microcontrollers
  • Daisy-chainable for easy expansion of the number of channels
  • Built-in shift register with latch for easy data transfer

Advantages and Disadvantages

Advantages

  • High current sinking capability enables driving of power-hungry LED displays
  • Serial input control simplifies the interface with microcontrollers, reducing external components
  • Daisy-chainable feature allows easy scalability for larger display configurations
  • Efficient shift register design minimizes data transfer complexity

Disadvantages

  • Limited to sinking current, not suitable for driving LED displays that require sourcing current
  • Requires an external microcontroller or controller to provide serial data input
  • Not suitable for applications requiring bidirectional communication

Working Principles

The M5451QT is designed to efficiently drive LED displays by providing high current sinking capability. It operates based on serial data input received from an external microcontroller or controller. The IC uses a shift register with a latch to store and transfer data to the output channels. Each channel can sink up to 500mA of current, making it suitable for driving large LED displays.

Detailed Application Field Plans

The M5451QT LED display driver IC finds applications in various fields, including:

  1. Advertising: Large outdoor LED billboards and signage
  2. Scoreboards: Sports arenas, stadiums, and indoor/outdoor scorekeeping displays
  3. Information Displays: Public transportation systems, airports, train stations, and bus stops
  4. Gaming: Casino slot machines, arcade games, and gaming consoles
  5. Industrial Control: Process monitoring, production line displays, and equipment status indicators

Detailed and Complete Alternative Models

  1. MAX7219 - LED display driver IC with similar features and capabilities
  2. TLC5940 - LED driver IC with both sourcing and sinking capabilities
  3. HT16K33 - LED driver IC with integrated key scanning functionality
  4. AS1130 - LED driver IC with built-in matrix scanning capabilities
  5. LP5024 - LED driver IC with individual PWM control for each channel

These alternative models offer similar functionality and can be considered as alternatives to the M5451QT depending on specific application requirements.

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技術ソリューションにおける M5451QT の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of M5451QT in technical solutions:

Q1: What is M5451QT? A1: M5451QT is a serially interfaced LED driver IC that can control up to 35 LEDs, making it suitable for various display applications.

Q2: How does M5451QT communicate with microcontrollers? A2: M5451QT uses a simple serial interface protocol, allowing easy communication with microcontrollers using only a few digital pins.

Q3: What is the maximum number of LEDs that M5451QT can control? A3: M5451QT can control up to 35 LEDs, which makes it ideal for small to medium-sized display projects.

Q4: Can M5451QT drive different types of LEDs? A4: Yes, M5451QT can drive both common anode and common cathode LEDs, providing flexibility in choosing the type of LEDs for your project.

Q5: How many M5451QT ICs can be cascaded together? A5: Multiple M5451QT ICs can be cascaded together to control a larger number of LEDs. The exact number depends on the specific requirements of your project.

Q6: Does M5451QT support dimming or brightness control? A6: Yes, M5451QT supports global brightness control, allowing you to adjust the overall brightness of all connected LEDs.

Q7: Can M5451QT handle multiplexing of LEDs? A7: No, M5451QT does not have built-in multiplexing capabilities. However, it can be combined with external multiplexing techniques to control a larger number of LEDs.

Q8: What is the power supply voltage range for M5451QT? A8: The power supply voltage range for M5451QT is typically between 4.5V and 5.5V, making it compatible with common microcontroller supply voltages.

Q9: Is M5451QT suitable for battery-powered applications? A9: Yes, M5451QT has low power consumption and can be used in battery-powered applications, provided the power requirements are met.

Q10: Are there any application examples for M5451QT? A10: Yes, M5451QT can be used in various applications such as LED displays, scoreboards, signage, gaming machines, and other projects requiring control of multiple LEDs.

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