AS431AZTR-E1

Product Overview

Category

AS431AZTR-E1 belongs to the category of voltage references.

Use

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

Characteristics

• Provides a stable voltage reference with high accuracy.
• Offers low temperature coefficient and excellent line regulation.
• Operates over a wide range of temperatures.
• Suitable for both battery-powered and industrial applications.

Package

AS431AZTR-E1 is available in a small SOT-23 package.

Essence

The essence of AS431AZTR-E1 lies in its ability to provide a precise and stable voltage reference, ensuring reliable performance in electronic systems.

Packaging/Quantity

This product is typically packaged in reels, with 3000 units per reel.

Specifications

• Reference Voltage: 2.5V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 50ppm/°C
• Line Regulation: 0.2%/V
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.5V to 36V
• Quiescent Current: 80µA

Detailed Pin Configuration

AS431AZTR-E1 has three pins:

1. Anode (A): Connected to the positive terminal of the power supply.
2. Cathode (K): Connected to the load or ground.
3. Reference (R): Provides the stable voltage reference output.

Functional Features

• Precise voltage reference for maintaining stability in electronic circuits.
• Adjustable output voltage through external resistors.
• Low quiescent current consumption.
• Overcurrent and thermal protection features.

Advantages and Disadvantages

Advantages

• High accuracy and stability.
• Wide operating temperature range.
• Low power consumption.
• Compact package size.
• Easy to use and integrate into various circuit designs.

Disadvantages

• Limited output current capability.
• Requires external resistors for voltage adjustment.

Working Principles

AS431AZTR-E1 operates based on the principle of a shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage across the load, regulating the current flow through the shunt resistor to maintain a stable output voltage.

Detailed Application Field Plans

AS431AZTR-E1 finds applications in various fields, including:

1. Power supply circuits: Provides stable voltage references for voltage regulators and power management systems.
2. Battery-powered devices: Ensures accurate voltage levels for battery monitoring and charging circuits.
3. Industrial control systems: Maintains precise voltage references for analog-to-digital converters and sensor interfaces.
4. Automotive electronics: Used in automotive voltage regulation circuits and battery management systems.

Detailed and Complete Alternative Models

Some alternative models to AS431AZTR-E1 include:

1. TL431: Similar shunt voltage reference with adjustable output voltage.
2. LM4040: Precision micropower shunt voltage reference with low temperature coefficient.
3. REF3030: High-accuracy voltage reference with low dropout voltage.

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements.

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