L4938EDTR-E

Product Overview

Category

L4938EDTR-E belongs to the category of voltage regulators.

Use

It is primarily used for regulating voltage in electronic circuits.

Characteristics

• High precision and stability
• Low dropout voltage
• Wide input voltage range
• Overcurrent and thermal protection
• Adjustable output voltage

Package

L4938EDTR-E comes in a small outline package (SOP) with 8 pins.

Essence

The essence of L4938EDTR-E lies in its ability to provide a stable and regulated output voltage, ensuring proper functioning of electronic devices.

Packaging/Quantity

L4938EDTR-E is typically packaged in reels containing a quantity of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 40V
• Output Voltage Range: 1.2V to 37V
• Dropout Voltage: 0.45V at 1A
• Output Current: Up to 1.5A
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

1. GND (Ground)
2. Vout (Output Voltage)
3. Vin (Input Voltage)
4. NC (No Connection)
5. NC (No Connection)
6. NC (No Connection)
7. NC (No Connection)
8. ADJ (Adjustment)

Functional Features

• Overcurrent Protection: The regulator shuts down when the output current exceeds a certain threshold.
• Thermal Protection: It prevents the device from overheating by shutting down when the temperature exceeds a safe limit.
• Adjustable Output Voltage: The output voltage can be adjusted using an external resistor.

Advantages

• High precision and stability ensure reliable voltage regulation.
• Low dropout voltage minimizes power dissipation.
• Wide input voltage range allows for versatile applications.
• Overcurrent and thermal protection enhance the safety of the circuit.

Disadvantages

• Limited output current capacity (up to 1.5A).
• Requires an external resistor for adjusting the output voltage.

Working Principles

L4938EDTR-E operates based on the principle of linear voltage regulation. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The regulator compares the output voltage with a reference voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

L4938EDTR-E finds applications in various electronic devices and systems, including: - Power supplies - Battery chargers - Automotive electronics - Industrial control systems - Audio amplifiers - LED lighting

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to L4938EDTR-E are: - LM317 - LM7805 - LT1083 - LM1117 - TPS7A4700

These models offer similar functionality and can be used as substitutes depending on specific requirements.

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