ON Semiconductor
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ADT7476ARQZ
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ADT7476ARQZ

Product Overview

Category

ADT7476ARQZ belongs to the category of integrated circuits (ICs).

Use

It is primarily used for temperature sensing and fan control in electronic devices.

Characteristics

  • Temperature sensing accuracy
  • Fan speed control capability
  • Low power consumption
  • Small form factor

Package

ADT7476ARQZ is available in a small outline package (SOIC) with 16 pins.

Essence

The essence of ADT7476ARQZ lies in its ability to accurately sense temperature and control fan speed, ensuring optimal thermal management in electronic devices.

Packaging/Quantity

ADT7476ARQZ is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Temperature Sensing Range: -40°C to +125°C
  • Supply Voltage: 2.7V to 5.5V
  • Fan Control Channels: 4
  • Communication Interface: I2C/SMBus

Detailed Pin Configuration

  1. VDD: Power supply voltage
  2. GND: Ground
  3. SDA: Serial data line (I2C/SMBus)
  4. SCL: Serial clock line (I2C/SMBus)
  5. ALERT: Interrupt output
  6. TACH1: Tachometer input for fan 1
  7. TACH2: Tachometer input for fan 2
  8. TACH3: Tachometer input for fan 3
  9. TACH4: Tachometer input for fan 4
  10. PWM1: Pulse width modulation output for fan 1
  11. PWM2: Pulse width modulation output for fan 2
  12. PWM3: Pulse width modulation output for fan 3
  13. PWM4: Pulse width modulation output for fan 4
  14. VCC: Power supply voltage
  15. GND: Ground
  16. NC: No connection

Functional Features

  • Accurate temperature sensing using built-in sensors or external diode connections
  • Fan speed control based on temperature readings
  • Programmable temperature thresholds and fan speed profiles
  • Over-temperature alarm and shutdown protection
  • I2C/SMBus interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages

  • Precise temperature sensing for effective thermal management
  • Flexible fan control options for optimal cooling
  • Compact package size for space-constrained applications
  • Low power consumption for energy efficiency

Disadvantages

  • Limited number of fan control channels (4 in this case)
  • Requires additional external diodes for accurate temperature sensing in some cases

Working Principles

ADT7476ARQZ operates by continuously monitoring the temperature using its built-in sensors or external diode connections. It compares the temperature readings with user-defined thresholds and adjusts the fan speeds accordingly. The I2C/SMBus interface allows communication with a microcontroller, enabling real-time temperature monitoring and fan control.

Detailed Application Field Plans

ADT7476ARQZ finds applications in various electronic devices that require temperature sensing and fan control. Some common application fields include:

  1. Personal Computers: Ensuring efficient cooling of CPUs and other components.
  2. Servers: Maintaining optimal operating temperatures in data centers.
  3. Home Appliances: Regulating temperature in refrigerators, ovens, etc.
  4. Automotive Electronics: Controlling fan speed in car engine compartments.
  5. Industrial Equipment: Preventing overheating in machinery and control panels.

Detailed and Complete Alternative Models

  1. ADT7473ARQZ: Similar functionality with 3 fan control channels.
  2. ADT7475ARQZ: Enhanced temperature sensing accuracy and 4 fan control channels.
  3. ADT7477ARQZ: Extended temperature range (-55°C to +150°C) with 4 fan control channels.

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

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de ADT7476ARQZ en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of ADT7476ARQZ in technical solutions:

  1. Question: What is ADT7476ARQZ?
    Answer: ADT7476ARQZ is a digital temperature sensor and fan controller IC.

  2. Question: What is the operating voltage range of ADT7476ARQZ?
    Answer: The operating voltage range of ADT7476ARQZ is typically between 3.0V and 5.5V.

  3. Question: Can ADT7476ARQZ measure multiple temperature zones?
    Answer: Yes, ADT7476ARQZ can measure up to four temperature zones simultaneously.

  4. Question: How does ADT7476ARQZ control fans?
    Answer: ADT7476ARQZ uses pulse width modulation (PWM) signals to control the speed of fans connected to it.

  5. Question: Does ADT7476ARQZ support automatic fan speed control?
    Answer: Yes, ADT7476ARQZ supports automatic fan speed control based on temperature readings.

  6. Question: Can ADT7476ARQZ communicate with a microcontroller or a computer?
    Answer: Yes, ADT7476ARQZ has an I2C interface that allows communication with external devices.

  7. Question: What is the maximum number of fans that ADT7476ARQZ can control?
    Answer: ADT7476ARQZ can control up to six fans.

  8. Question: Does ADT7476ARQZ have built-in over-temperature protection?
    Answer: Yes, ADT7476ARQZ has built-in over-temperature protection to prevent overheating.

  9. Question: Can ADT7476ARQZ monitor voltage and current?
    Answer: Yes, ADT7476ARQZ can monitor the voltage and current of the fans it controls.

  10. Question: Is ADT7476ARQZ suitable for applications in computers and servers?
    Answer: Yes, ADT7476ARQZ is commonly used in computer and server applications for temperature monitoring and fan control.

Please note that these answers are general and may vary depending on the specific implementation and configuration of ADT7476ARQZ in a technical solution.