L4972AD

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: TO-220

Essence: The L4972AD is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The L4972AD is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

Input Voltage Range: 8V - 55V
Output Voltage Range: 1.25V - 50V
Output Current: Up to 3A
Dropout Voltage: 0.6V (typical)
Quiescent Current: 10mA (typical)
Operating Temperature Range: -40°C to +125°C

Pin Configuration

The L4972AD has a standard TO-220 package with five pins:

VIN - Input voltage pin
GND - Ground pin
SENSE - Sense pin for feedback voltage
VOUT - Output voltage pin
COMP - Compensation pin for stability control

Functional Features

High Efficiency: The L4972AD utilizes advanced circuitry to achieve high efficiency, minimizing power losses during voltage regulation.
Low Dropout Voltage: The IC maintains a low dropout voltage, ensuring stable output voltage even when the input voltage is close to the desired output voltage.
Adjustable Output Voltage: The output voltage can be easily adjusted using external resistors, allowing flexibility in meeting specific voltage requirements.
Overcurrent Protection: The L4972AD incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
Thermal Shutdown Protection: In case of excessive temperature rise, the IC automatically shuts down to prevent damage due to overheating.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Adjustable output voltage provides versatility - Overcurrent and thermal shutdown protection enhance reliability and safety

Disadvantages: - Limited maximum output current (up to 3A) - Requires external components for proper operation

Working Principles

The L4972AD operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (SENSE pin) with a reference voltage. The internal circuitry adjusts the pass transistor to maintain a stable output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The L4972AD is commonly used in various applications, including but not limited to: - Power supplies for industrial equipment - Automotive electronics - Telecommunications devices - Audio amplifiers - LED lighting systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the L4972AD include: - LM317: Adjustable voltage regulator with higher output current capability - LT1083: High-current adjustable voltage regulator with low dropout voltage - LM7805: Fixed 5V voltage regulator for low-power applications

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

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L4972AD v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L4972AD in technical solutions:

Q: What is L4972AD? A: L4972AD is a voltage regulator IC that provides a regulated output voltage for various electronic applications.
Q: What is the input voltage range of L4972AD? A: The input voltage range of L4972AD is typically between 8V and 55V.
Q: What is the output voltage range of L4972AD? A: The output voltage range of L4972AD can be adjusted from 1.235V to 35V.
Q: What is the maximum output current of L4972AD? A: The maximum output current of L4972AD is 3A.
Q: Can L4972AD handle high-frequency switching? A: Yes, L4972AD is designed to handle high-frequency switching up to 300kHz.
Q: Does L4972AD have built-in protection features? A: Yes, L4972AD has built-in protection features such as thermal shutdown, overcurrent protection, and short-circuit protection.
Q: Can L4972AD operate in a wide temperature range? A: Yes, L4972AD can operate in a temperature range of -40°C to +125°C.
Q: Is L4972AD suitable for automotive applications? A: Yes, L4972AD is suitable for automotive applications as it meets the requirements for automotive-grade components.
Q: Can L4972AD be used in both step-up and step-down configurations? A: Yes, L4972AD can be used in both step-up (boost) and step-down (buck) configurations.
Q: What are some typical applications of L4972AD? A: Some typical applications of L4972AD include power supplies, battery chargers, LED drivers, and automotive electronics.

Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.