L4931ABPT25

Product Overview

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

Specifications

• Input Voltage Range: 4.4V to 40V
• Output Voltage: 2.5V
• Output Current: Up to 100mA
• Dropout Voltage: 0.6V (typical)
• Quiescent Current: 50µA (typical)
• Line Regulation: 0.05% (typical)
• Load Regulation: 0.2% (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L4931ABPT25 has three pins:

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

Functional Features

• Low Dropout: The L4931ABPT25 has a low dropout voltage, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a low quiescent current, the regulator minimizes power consumption when the load is light.
• High Accuracy: The device offers high output voltage accuracy, ensuring precise voltage regulation for sensitive electronic components.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation with low dropout voltage
• Low power consumption due to low quiescent current
• High output voltage accuracy for precise regulation

Disadvantages

• Limited output current capability (up to 100mA)
• Restricted input voltage range (4.4V to 40V)

Working Principles

The L4931ABPT25 is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage from the output, adjusting the pass transistor to maintain a stable output voltage.

Detailed Application Field Plans

The L4931ABPT25 finds applications in various electronic devices and systems, including:

1. Battery-powered devices: Provides stable voltage for microcontrollers, sensors, and other low-power components.
2. Automotive electronics: Regulates voltage for audio systems, lighting controls, and other automotive accessories.
3. Industrial control systems: Ensures stable voltage for PLCs, motor drives, and other industrial equipment.
4. Communication systems: Used in routers, switches, and network equipment to maintain reliable voltage levels.

Detailed and Complete Alternative Models

1. LM1117-2.5: Similar specifications and pin configuration, available in different package options.
2. LT1761-2.5: Low dropout voltage regulator with adjustable output voltage.
3. MCP1702-2.5: Low quiescent current regulator with wide input voltage range.

(Note: This list is not exhaustive and other alternative models may exist.)

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