SPX3940T-L-3-3/TR

Product Overview

Category

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

Use

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

Characteristics

• Voltage regulation: The SPX3940T-L-3-3/TR provides a stable output voltage, ensuring consistent performance of connected devices.
• Efficiency: This voltage regulator offers high efficiency, minimizing power loss during operation.
• Low dropout voltage: The device maintains a low dropout voltage, enabling it to regulate voltage even when the input voltage is close to the desired output voltage.
• Thermal protection: The SPX3940T-L-3-3/TR incorporates thermal protection mechanisms to prevent overheating and ensure safe operation.
• Short-circuit protection: It includes built-in short-circuit protection to safeguard against damage caused by excessive current flow.

Package

The SPX3940T-L-3-3/TR is available in a compact surface-mount package, making it suitable for space-constrained applications.

Essence

The essence of the SPX3940T-L-3-3/TR lies in its ability to provide reliable and stable voltage regulation, ensuring optimal performance of electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of voltage regulators. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Input voltage range: 4V - 16V
• 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/TR has three pins:

1. Vin (Input): This pin is used to connect the input voltage source.
2. Vout (Output): The regulated output voltage is provided through this pin.
3. GND (Ground): This pin is connected to the ground reference of the circuit.

Functional Features

• Voltage regulation: The SPX3940T-L-3-3/TR maintains a constant output voltage of 3.3V, regardless of variations in the input voltage.
• Load regulation: It exhibits excellent load regulation characteristics, ensuring stable performance even with varying loads.
• Fast transient response: The device quickly responds to changes in load conditions, minimizing voltage fluctuations.
• Low quiescent current: The regulator consumes minimal current when there is no load, conserving power and extending battery life.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption.
• Compact package size allows for easy integration into space-constrained designs.
• Thermal and short-circuit protection mechanisms enhance safety and reliability.
• Fast transient response ensures stability during load variations.

Disadvantages

• Limited maximum output current of 1A may not be suitable for high-power applications.
• Dropout voltage of 0.5V may restrict its use in low-voltage systems.

Working Principles

The SPX3940T-L-3-3/TR utilizes a combination of internal circuitry and feedback mechanisms to regulate the output voltage. It compares the actual output voltage with a reference voltage and adjusts the internal circuitry accordingly to maintain a stable output voltage of 3.3V.

Detailed Application Field Plans

The SPX3940T-L-3-3/TR finds application in various electronic devices and systems, including but not limited to: - Battery-powered devices - Portable consumer electronics - Embedded systems - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

1. SPX3940T-L-2-5/TR: Similar to the SPX3940T-L-3-3/TR, but with an output voltage of 2.5V.
2. SPX3940T-L-5-0/TR: Similar to the SPX3940T-L-3-3/TR, but with an output voltage of 5.0V.
3. SPX3940T-L-ADJ/TR: Adjustable output voltage version of the SPX3940T-L series, allowing for a user-defined output voltage within a specified range.

These alternative models provide flexibility in choosing the desired output voltage for specific applications.

In conclusion, the SPX3940T-L-3-3/TR is a voltage regulator that offers stable voltage regulation, high efficiency, and various protection mechanisms. Its compact size and wide operating temperature range make it suitable for a range of electronic applications. However, its limited maximum output current and dropout voltage should be considered when selecting this product for specific designs.