L4938ED013TR

Product Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: High efficiency, low dropout voltage, overcurrent protection
Package: TO-220
Essence: Linear voltage regulator
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

Input Voltage Range: 4.5V to 40V
Output Voltage Range: 1.2V to 37V
Output Current: Up to 3A
Dropout Voltage: 0.5V at 3A
Quiescent Current: 10mA
Line Regulation: 0.02%/V
Load Regulation: 0.04%/A
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4938ED013TR has a standard TO-220 package with three pins:

Pin 1 (VIN): Input voltage pin
Pin 2 (GND): Ground pin
Pin 3 (VOUT): Output voltage pin

Functional Features

High Efficiency: The L4938ED013TR offers high efficiency due to its low dropout voltage and low quiescent current.
Overcurrent Protection: It incorporates overcurrent protection, safeguarding the circuit from excessive current flow.
Thermal Shutdown: The IC includes thermal shutdown protection, preventing damage from excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - Low dropout voltage ensures efficient power conversion. - Overcurrent protection enhances system reliability. - Thermal shutdown feature prevents overheating.

Disadvantages: - Limited output current capacity compared to some other voltage regulators. - Higher quiescent current compared to certain low-power alternatives.

Working Principles

The L4938ED013TR is a linear voltage regulator that maintains a stable output voltage regardless of input voltage fluctuations. It achieves this by using a pass transistor to regulate the output voltage based on a feedback mechanism. The internal circuitry compares the actual output voltage with a reference voltage and adjusts the pass transistor accordingly.

Detailed Application Field Plans

The L4938ED013TR finds applications in various fields, including: 1. Automotive: Power supply for automotive electronics, such as infotainment systems and lighting control. 2. Industrial: Voltage regulation for industrial automation equipment, motor control, and instrumentation. 3. Consumer Electronics: Power management for audio/video devices, gaming consoles, and home appliances. 4. Telecommunications: Voltage regulation for telecom infrastructure, base stations, and network equipment.

Detailed and Complete Alternative Models

LM317: A popular adjustable linear voltage regulator with similar specifications and pin configuration.
LT1083: High current linear voltage regulator with low dropout voltage and adjustable output.
LM7805: Fixed 5V linear voltage regulator commonly used in electronic circuits.
TPS7A4700: Low-noise, high-accuracy linear voltage regulator suitable for sensitive applications.

(Note: This list is not exhaustive and other alternative models may exist.)

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací L4938ED013TR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of L4938ED013TR in technical solutions:

Q: What is L4938ED013TR? A: L4938ED013TR is a specific model of voltage regulator IC (integrated circuit) used in various technical solutions.
Q: What is the input voltage range for L4938ED013TR? A: The input voltage range for L4938ED013TR is typically between 4.5V and 40V.
Q: What is the output voltage range of L4938ED013TR? A: The output voltage range of L4938ED013TR can be adjusted from 1.25V to 37V.
Q: What is the maximum output current of L4938ED013TR? A: The maximum output current of L4938ED013TR is typically around 1.5A.
Q: Is L4938ED013TR suitable for automotive applications? A: Yes, L4938ED013TR is designed to meet the requirements of automotive applications, including high temperature and reliability standards.
Q: Can L4938ED013TR handle short-circuit conditions? A: Yes, L4938ED013TR has built-in protection features that allow it to handle short-circuit conditions without damage.
Q: Does L4938ED013TR require external components for operation? A: Yes, L4938ED013TR requires external capacitors and resistors for proper operation and stability.
Q: Can L4938ED013TR operate in a wide temperature range? A: Yes, L4938ED013TR is designed to operate in a wide temperature range, typically from -40°C to 150°C.
Q: What is the typical efficiency of L4938ED013TR? A: The typical efficiency of L4938ED013TR is around 85-90%, depending on the input and output voltage conditions.
Q: Are there any specific application notes or reference designs available for L4938ED013TR? A: Yes, the manufacturer of L4938ED013TR provides application notes and reference designs that can help in implementing the IC in various technical solutions.

Please note that the answers provided here are general and may vary depending on the specific datasheet and application requirements of L4938ED013TR.