L4979DTR-E

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent and thermal protection - Wide input voltage range

Package: SO-8 (Small Outline 8-pin package)

Essence: The L4979DTR-E is a voltage regulator IC designed to provide a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The L4979DTR-E is typically sold in reels containing 2500 units.

Specifications

Input Voltage Range: 4.5V to 60V
Output Voltage Range: 1.2V to 57V
Output Current: Up to 1.5A
Dropout Voltage: 1.2V (typical)
Quiescent Current: 10mA (typical)
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4979DTR-E has the following pin configuration:

GND (Ground)
IN (Input Voltage)
SENSE (Voltage Sensing)
VREF (Reference Voltage)
FB (Feedback)
OUT (Output Voltage)
NC (No Connection)
VCC (Supply Voltage)

Functional Features

High Efficiency: The L4979DTR-E incorporates a high-efficiency voltage regulator circuit, minimizing power losses and maximizing energy conversion.
Low Dropout Voltage: With a low dropout voltage of 1.2V, the IC can maintain a 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 and Thermal Protection: The IC includes built-in protection mechanisms to prevent damage from overcurrent conditions and excessive heat.
Wide Input Voltage Range: The L4979DTR-E can handle a wide range of input voltages, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Adjustable output voltage provides flexibility - Overcurrent and thermal protection ensure device safety - Wide input voltage range allows for versatile use

Disadvantages: - Limited maximum output current (up to 1.5A) - Dropout voltage may affect performance in low voltage applications

Working Principles

The L4979DTR-E operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB pin) with the reference voltage (VREF pin). The internal circuitry adjusts the pass transistor to maintain a stable output voltage regardless of changes in the input voltage or load conditions.

Detailed Application Field Plans

The L4979DTR-E is commonly used in various electronic devices and systems, including: - Power supplies for industrial equipment - Automotive electronics - Battery-powered devices - Telecommunications equipment - Audio amplifiers

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the L4979DTR-E include: - LM317: Adjustable voltage regulator with higher output current capability - LT1083: Low dropout voltage regulator with higher output current capability - LM7805: Fixed voltage regulator with lower output current capability

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

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van L4979DTR-E in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of L4979DTR-E in technical solutions:

Q: What is L4979DTR-E? A: L4979DTR-E is a voltage regulator IC (integrated circuit) commonly used in technical solutions to regulate and control power supply voltages.
Q: What is the input voltage range supported by L4979DTR-E? A: The input voltage range supported by L4979DTR-E is typically between 8V and 55V.
Q: What is the output voltage range provided by L4979DTR-E? A: L4979DTR-E can provide an adjustable output voltage ranging from 5V to 40V.
Q: Can L4979DTR-E handle high current loads? A: Yes, L4979DTR-E has a maximum output current capability of up to 3A, making it suitable for applications with moderate to high current loads.
Q: Does L4979DTR-E have built-in protection features? A: Yes, L4979DTR-E includes various protection features such as thermal shutdown, overcurrent protection, and short-circuit protection.
Q: Is L4979DTR-E suitable for automotive applications? A: Yes, L4979DTR-E is designed to meet automotive specifications, making it suitable for use in automotive applications.
Q: Can L4979DTR-E operate in a wide temperature range? A: Yes, L4979DTR-E is designed to operate in a wide temperature range, typically from -40°C to +150°C.
Q: Does L4979DTR-E require external components for operation? A: Yes, L4979DTR-E requires external components such as capacitors and resistors for proper operation and stability.
Q: Can L4979DTR-E be used in both step-up (boost) and step-down (buck) configurations? A: Yes, L4979DTR-E can be used in both step-up and step-down configurations, allowing flexibility in various power supply designs.
Q: Is there a datasheet available for L4979DTR-E? A: Yes, a datasheet providing detailed information about L4979DTR-E's electrical characteristics, pin configuration, and application notes is available from the manufacturer's website or authorized distributors.

Please note that the answers provided here are general and may vary depending on specific application requirements. It is always recommended to refer to the official documentation and consult with technical experts for accurate and detailed information.