L4931ABD25

Product Overview

• Category: Voltage Regulator
• Use: To regulate and stabilize the output voltage in electronic circuits
• Characteristics: Low dropout voltage, high output current capability, thermal shutdown protection
• Package: TO-252 (DPAK)
• Essence: Linear voltage regulator
• Packaging/Quantity: Available in tape and reel packaging, quantity varies depending on supplier

Specifications

• Input Voltage Range: 4.4V to 26V
• Output Voltage: 2.5V
• Output Current: Up to 100mA
• Dropout Voltage: 0.6V typical at 100mA load
• Line Regulation: ±0.2% typical
• Load Regulation: ±0.4% typical
• Quiescent Current: 5mA typical
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4931ABD25 has three pins:

1. Input (IN): Connects to the input voltage source.
2. Ground (GND): Connected to the ground reference of the circuit.
3. Output (OUT): Provides the regulated output voltage.

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• High output current capability allows for powering a wide range of electronic components.
• Thermal shutdown protection prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages

• Compact TO-252 package enables easy integration into various circuit designs.
• Low dropout voltage minimizes power dissipation and improves efficiency.
• Wide input voltage range provides flexibility in different applications.
• Thermal shutdown protection enhances reliability and safeguards against overheating.

Disadvantages

• Limited output current capability compared to some other voltage regulators.
• Higher quiescent current compared to certain low-power alternatives.

Working Principles

The L4931ABD25 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The L4931ABD25 is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: Portable electronics, such as smartphones, tablets, and portable audio players, benefit from its low dropout voltage and efficient power regulation.
2. Automotive applications: Provides stable voltage supply for automotive electronics, such as infotainment systems, navigation units, and lighting controls.
3. Industrial equipment: Used in control systems, sensors, and instrumentation where precise and reliable voltage regulation is required.
4. Communication systems: Ensures stable voltage supply for routers, modems, and other network equipment.

Detailed and Complete Alternative Models

• LM1117-2.5: Similar voltage regulator with adjustable output voltage.
• MCP1702-2502E: Low dropout voltage regulator with 2.5V fixed output.
• AMS1117-2.5: Low dropout voltage regulator with 2.5V fixed output and SOT-223 package.

(Note: This list is not exhaustive and there are several other alternative models available in the market.)

In conclusion, the L4931ABD25 is a voltage regulator with excellent characteristics, making it suitable for a wide range of applications. Its compact package, low dropout voltage, and thermal shutdown protection make it an attractive choice for designers seeking reliable and efficient voltage regulation.