AS431AKTR-E1

Product Overview

Category

AS431AKTR-E1 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 voltage reference with high accuracy.
• Offers low temperature coefficient and excellent line regulation.
• Operates over a wide temperature range.
• Suitable for both battery-powered and industrial applications.

Package

AS431AKTR-E1 comes in a small SOT-23 package, which is widely used in surface mount technology (SMT) applications.

Essence

The essence of AS431AKTR-E1 lies in its ability to maintain a constant voltage reference regardless of external conditions.

Packaging/Quantity

This product is typically packaged in reels, containing a specific quantity of units per reel. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

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

Detailed Pin Configuration

AS431AKTR-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: AS431AKTR-E1 ensures a stable output voltage regardless of input variations.
• Adjustable output: The output voltage can be adjusted by connecting external resistors.
• Low power consumption: It operates with low quiescent current, making it suitable for power-sensitive applications.
• Short-circuit protection: The device is designed to withstand short-circuit conditions without damage.

Advantages and Disadvantages

Advantages

• High accuracy and stability.
• Wide operating temperature range.
• Low power consumption.
• Small package size for space-constrained applications.

Disadvantages

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

Working Principles

AS431AKTR-E1 operates based on the principle of a shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage across a resistor connected between the Anode (A) and Cathode (K) pins. By adjusting the current flowing through the resistor, it maintains a constant voltage drop across it, thereby providing a stable output voltage.

Detailed Application Field Plans

AS431AKTR-E1 finds applications in various fields, including:

1. Power supply circuits: It can be used as a voltage reference in linear regulators or switching power supplies.
2. Battery charging systems: AS431AKTR-E1 ensures accurate voltage regulation during battery charging processes.
3. Sensor circuits: It provides a stable reference voltage for precise sensor measurements.
4. Audio amplifiers: It can be utilized as a biasing element to maintain consistent audio signal levels.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AS431AKTR-E1 include:

1. TL431: A widely used programmable precision reference.
2. LM4040: A series of precision micropower shunt voltage references.
3. REF3030: A low-power, high-precision voltage reference.

These alternatives may have different specifications and package options, so it is important to select the one that best suits the specific application requirements.

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