SPX3940T-L-3-3

Product Overview

Category

SPX3940T-L-3-3 belongs to the category of voltage regulators.

Use

This product is primarily used for regulating voltage in electronic circuits.

Characteristics

• Voltage regulation capability
• Compact size
• High efficiency
• Low dropout voltage
• Thermal shutdown protection

Package

The SPX3940T-L-3-3 comes in a small surface-mount package, making it suitable for space-constrained applications.

Essence

The essence of SPX3940T-L-3-3 lies in its ability to provide stable and regulated voltage output, ensuring proper functioning of electronic devices.

Packaging/Quantity

The product is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of SPX3940T-L-3-3 voltage regulators.

Specifications

• Input Voltage Range: 4.5V to 7V
• Output Voltage: 3.3V
• Maximum Output Current: 1A
• Dropout Voltage: 0.5V (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SPX3940T-L-3-3 has three pins:

1. Vin (Input Voltage)
2. Vout (Output Voltage)
3. GND (Ground)

Functional Features

• Voltage Regulation: The SPX3940T-L-3-3 ensures a stable output voltage of 3.3V regardless of input voltage fluctuations.
• Thermal Shutdown Protection: In case of excessive temperature rise, the regulator shuts down to prevent damage.
• Low Dropout Voltage: The device maintains a low voltage drop between the input and output, minimizing power dissipation.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Compact size allows for easy integration into various electronic devices.
• Thermal shutdown protection ensures safety and reliability.

Disadvantages

• Limited output current capacity of 1A may not be sufficient for high-power applications.
• Input voltage range is relatively narrow, restricting compatibility with certain systems.

Working Principles

The SPX3940T-L-3-3 operates based on the principle of linear voltage regulation. It utilizes a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals.

Detailed Application Field Plans

The SPX3940T-L-3-3 finds application in various electronic systems, including but not limited to: - Battery-powered devices - Embedded systems - Consumer electronics - Industrial automation

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to SPX3940T-L-3-3 are: - LM1117-3.3 - LT1086-3.3 - MCP1702-3.3

These models offer similar voltage regulation capabilities and can be used as substitutes depending on specific requirements.

In conclusion, the SPX3940T-L-3-3 voltage regulator is a compact and efficient device used for stabilizing voltage in electronic circuits. Its thermal shutdown protection and low dropout voltage make it suitable for a wide range of applications. However, its limited output current capacity and narrow input voltage range should be taken into consideration when selecting an appropriate voltage regulator for high-power or specific system requirements.