VRE205M

Product Overview

Category: Electronic Component
Use: Voltage Regulator
Characteristics: High precision, low dropout voltage, compact size
Package: TO-220
Essence: Integrated circuit voltage regulator
Packaging/Quantity: Bulk packaging, 100 units per pack

Specifications

• Input Voltage Range: 4.5V to 24V
• Output Voltage Range: 1.2V to 20V
• Output Current: Up to 2A
• Dropout Voltage: 0.3V at 1A
• Line Regulation: ±0.02%
• Load Regulation: ±0.1%
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The VRE205M voltage regulator has a standard TO-220 package with three pins:

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

Functional Features

• High precision regulation ensures stable output voltage.
• Low dropout voltage allows efficient operation even with small input-output differentials.
• Compact size enables easy integration into various electronic circuits.
• Built-in thermal shutdown and current limit protection for enhanced reliability.
• Fast transient response to sudden load changes.

Advantages

• Wide input voltage range accommodates various power supply sources.
• Excellent line and load regulation for precise voltage control.
• Low quiescent current minimizes power consumption in standby mode.
• Robust protection features ensure safe operation under adverse conditions.
• Compact form factor saves board space in applications with limited area.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Dropout voltage may cause power dissipation and heat generation in certain scenarios.
• Requires external capacitors for stability, adding to the component count.

Working Principles

The VRE205M is a linear voltage regulator that utilizes an integrated circuit to maintain a constant output voltage regardless of input variations. It employs a feedback mechanism to adjust its internal pass transistor, compensating for changes in load and input conditions. By comparing the output voltage with a reference voltage, the regulator continuously adjusts the pass transistor to ensure a stable output.

Detailed Application Field Plans

The VRE205M finds applications in various electronic systems where precise voltage regulation is required. Some common application fields include:

1. Power Supplies: Used as a post-regulator to provide stable voltage to sensitive components.
2. Battery-Powered Devices: Ensures consistent voltage levels for efficient operation.
3. Automotive Electronics: Regulates voltage for automotive sensors, control modules, etc.
4. Industrial Control Systems: Provides reliable voltage for PLCs, motor drives, and instrumentation.
5. Consumer Electronics: Used in audio/video equipment, routers, set-top boxes, etc.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with similar specifications.
2. LT1084: High current, low dropout voltage regulator suitable for demanding applications.
3. LM7805: Fixed 5V regulator commonly used in many electronic devices.
4. ADP3339: Low quiescent current, high PSRR voltage regulator for battery-powered systems.
5. TPS7A47: Ultra-low noise, high PSRR regulator ideal for audio applications.

(Note: This list is not exhaustive and other alternative models are available.)

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