NCV431AIDR2G

Product Overview

Category

The NCV431AIDR2G belongs to the category of voltage references.

Use

It is commonly used as a precision shunt regulator in various electronic circuits.

Characteristics

• Provides a stable reference voltage for accurate circuit operation.
• Offers high precision and low temperature coefficient.
• Can operate over a wide range of input voltages.
• Exhibits excellent line and load regulation characteristics.

Package

The NCV431AIDR2G is available in a small SOT-23 package.

Essence

This voltage reference is an essential component in electronic systems that require precise and stable voltage levels.

Packaging/Quantity

The NCV431AIDR2G is typically sold in reels containing 3000 units.

Specifications

• Reference Voltage: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 50ppm/°C
• Operating Voltage Range: 1.24V to 36V
• Quiescent Current: 60µA
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The NCV431AIDR2G has three pins:

1. Cathode (K): Connected to the ground or reference potential.
2. Anode (A): Connected to the input voltage source.
3. Output (O): Provides the regulated reference voltage.

Functional Features

• Precise Voltage Regulation: The NCV431AIDR2G maintains a constant output voltage regardless of changes in input voltage or load conditions.
• Low Power Consumption: With a quiescent current of only 60µA, it minimizes power consumption in battery-powered applications.
• Fast Response Time: It quickly responds to changes in load conditions, ensuring stable voltage output.

Advantages and Disadvantages

Advantages

• High precision and low temperature coefficient ensure accurate voltage regulation.
• Wide operating voltage range allows for versatile applications.
• Small package size enables space-saving designs.
• Excellent line and load regulation characteristics provide stable performance.

Disadvantages

• Limited output current capacity (up to 100mA).
• Requires an external resistor for precise voltage selection.

Working Principles

The NCV431AIDR2G operates based on the principle of a shunt regulator. It compares the reference voltage (2.5V) with the input voltage and adjusts the current flowing through the internal resistor to maintain a constant output voltage. By controlling the current, it compensates for variations in the input voltage and load conditions, providing a stable reference voltage.

Detailed Application Field Plans

The NCV431AIDR2G finds applications in various electronic systems, including:

1. Voltage Regulation: It is used as a precision voltage reference in power supplies, battery chargers, and voltage regulators.
2. Sensor Calibration: It provides a stable reference voltage for calibrating sensors in automotive, industrial, and medical applications.
3. Analog-to-Digital Conversion: It ensures accurate voltage levels in analog-to-digital converters, enhancing the precision of measurements.
4. Audio Amplifiers: It helps maintain consistent audio signal levels in amplifiers, improving sound quality.

Detailed and Complete Alternative Models

1. TL431: A widely used alternative with similar specifications and functionality.
2. LM4040: Offers higher accuracy and lower temperature coefficient but at a higher cost.
3. REF3030: Provides a higher output current capability while maintaining good precision.

These alternative models can be considered based on specific application requirements and cost considerations.

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