Renesas Electronics America Inc.
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ISL78444AVEZ-T7A

ISL78444AVEZ-T7A

Product Overview

Category

ISL78444AVEZ-T7A belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in automotive applications, specifically for power management.

Characteristics

  • High efficiency
  • Wide input voltage range
  • Low quiescent current
  • Overvoltage and overcurrent protection
  • Thermal shutdown protection

Package

ISL78444AVEZ-T7A is available in a small outline package (SOP) with exposed pad.

Essence

The essence of ISL78444AVEZ-T7A lies in its ability to efficiently manage power in automotive systems, ensuring reliable and safe operation.

Packaging/Quantity

This product is typically packaged in reels and the quantity per reel varies depending on customer requirements.

Specifications

  • Input Voltage Range: 4.5V to 40V
  • Output Voltage Range: 0.8V to 5.5V
  • Maximum Continuous Output Current: 4A
  • Quiescent Current: 50µA
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. EN: Enable pin
  4. FB: Feedback pin
  5. VOUT: Output voltage pin

Functional Features

  • Wide input voltage range allows compatibility with various automotive systems.
  • High efficiency ensures minimal power loss during operation.
  • Overvoltage and overcurrent protection safeguards the system from potential damage.
  • Thermal shutdown protection prevents overheating and enhances safety.

Advantages and Disadvantages

Advantages

  • High efficiency leads to improved energy utilization.
  • Wide input voltage range provides flexibility in different automotive applications.
  • Overvoltage and overcurrent protection enhance system reliability.

Disadvantages

  • Limited maximum continuous output current may restrict usage in high-power applications.
  • Quiescent current, although low, still contributes to power consumption.

Working Principles

ISL78444AVEZ-T7A operates as a buck converter, converting the input voltage to a lower output voltage. It utilizes pulse width modulation (PWM) techniques to regulate the output voltage based on the feedback received from the FB pin. The enable pin (EN) controls the ON/OFF state of the converter.

Detailed Application Field Plans

ISL78444AVEZ-T7A finds extensive application in the automotive industry, particularly in power management systems. Some specific use cases include:

  1. Electric vehicle powertrain systems
  2. Battery management systems
  3. LED lighting systems in automobiles
  4. Infotainment systems
  5. Advanced driver-assistance systems (ADAS)

Detailed and Complete Alternative Models

  1. ISL78244AVEZ-T7A: Similar to ISL78444AVEZ-T7A but with a higher maximum continuous output current of 6A.
  2. ISL78344AVEZ-T7A: Similar to ISL78444AVEZ-T7A but with an extended input voltage range up to 60V.

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

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Énumérez 10 questions et réponses courantes liées à l'application de ISL78444AVEZ-T7A dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of ISL78444AVEZ-T7A in technical solutions:

  1. Q: What is the ISL78444AVEZ-T7A? A: The ISL78444AVEZ-T7A is a high-performance, quad-output power supply controller designed for automotive applications.

  2. Q: What are the key features of the ISL78444AVEZ-T7A? A: The key features include wide input voltage range, high efficiency, low quiescent current, adjustable output voltage, and overvoltage/undervoltage protection.

  3. Q: What are the typical applications of the ISL78444AVEZ-T7A? A: The ISL78444AVEZ-T7A is commonly used in automotive systems such as infotainment systems, advanced driver-assistance systems (ADAS), and lighting control modules.

  4. Q: What is the maximum input voltage supported by the ISL78444AVEZ-T7A? A: The ISL78444AVEZ-T7A can handle an input voltage range from 3V to 40V.

  5. Q: How many outputs does the ISL78444AVEZ-T7A have? A: The ISL78444AVEZ-T7A has four independent outputs, each capable of delivering up to 1A of current.

  6. Q: Can the output voltages be adjusted on the ISL78444AVEZ-T7A? A: Yes, the output voltages can be adjusted using external resistors connected to the feedback pins.

  7. Q: Does the ISL78444AVEZ-T7A provide any protection features? A: Yes, the ISL78444AVEZ-T7A offers overvoltage protection, undervoltage lockout, and thermal shutdown protection.

  8. Q: What is the operating temperature range of the ISL78444AVEZ-T7A? A: The ISL78444AVEZ-T7A can operate within a temperature range of -40°C to +125°C.

  9. Q: Can the ISL78444AVEZ-T7A be used in other applications besides automotive systems? A: While it is primarily designed for automotive applications, the ISL78444AVEZ-T7A can also be used in other industrial and consumer electronics applications.

  10. Q: Is there any evaluation board available for the ISL78444AVEZ-T7A? A: Yes, Intersil provides an evaluation board (ISL78444EVAL1Z) that allows users to test and evaluate the performance of the ISL78444AVEZ-T7A in their specific applications.

Please note that these answers are general and may vary depending on the specific requirements and use cases. It's always recommended to refer to the datasheet and application notes for detailed information.