L4931CPT50

Product Overview

• Category: Voltage Regulator
• Use: To regulate voltage in electronic circuits
• Characteristics: Low dropout, low quiescent current, high accuracy
• Package: TO-220, SOT-89
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.4V to 20V
• Output Voltage: 5V
• Output Current: 250mA
• Dropout Voltage: 0.6V (typical)
• Quiescent Current: 5mA (typical)
• Line Regulation: 0.2% (typical)
• Load Regulation: 0.4% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4931CPT50 has three pins:

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

Functional Features

• Low dropout voltage ensures efficient regulation even with small voltage differences.
• Low quiescent current minimizes power consumption when the load is light.
• High accuracy provides a stable output voltage for precise circuit operation.
• Thermal shutdown protection prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Low dropout voltage allows for efficient regulation. - Low quiescent current reduces power consumption. - High accuracy ensures stable output voltage. - Thermal shutdown protection enhances reliability.

Disadvantages: - Limited output current capability (250mA). - Restricted input voltage range (4.4V to 20V).

Working Principles

The L4931CPT50 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The L4931CPT50 is commonly used in various electronic devices, including:

1. Battery-powered devices: Provides a stable voltage supply for microcontrollers, sensors, and other low-power components.
2. Automotive applications: Regulates voltage for automotive electronics, such as infotainment systems and engine control units.
3. Industrial equipment: Ensures consistent voltage levels for control systems, motor drivers, and sensors.

Detailed and Complete Alternative Models

1. LM1117-5.0: Similar specifications and pin configuration, available in different package options.
2. LT1761-5: Offers lower dropout voltage and higher output current capability.
3. MCP1700-500: Low-cost alternative with comparable performance.

Please note that these alternative models may have slight differences in specifications and features.