AP431SHARTR-G1

Product Overview

Category

AP431SHARTR-G1 belongs to the category of voltage references.

Use

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

Characteristics

• High accuracy and stability
• Low temperature coefficient
• Wide operating voltage range
• Adjustable output voltage
• Low quiescent current

Package

AP431SHARTR-G1 is available in a small surface mount SOT-23 package.

Essence

The essence of AP431SHARTR-G1 lies in its ability to provide a stable reference voltage for precise voltage regulation in electronic systems.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a specific quantity of AP431SHARTR-G1 units.

Specifications

• Reference Voltage: 2.5V
• Operating Voltage Range: 2.5V to 36V
• Quiescent Current: 80µA (typical)
• Output Current: Up to 100mA
• Temperature Coefficient: ±50ppm/°C (typical)

Detailed Pin Configuration

AP431SHARTR-G1 has three pins:

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

Functional Features

• Voltage Regulation: AP431SHARTR-G1 maintains a constant output voltage regardless of input voltage variations.
• Adjustable Output: The reference voltage can be adjusted using external resistors to meet specific requirements.
• Low Power Consumption: With a low quiescent current, it minimizes power consumption in battery-powered applications.
• Temperature Stability: It exhibits low temperature coefficient, ensuring stable performance over a wide temperature range.

Advantages and Disadvantages

Advantages

• High accuracy and stability in voltage regulation.
• Wide operating voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility.
• Low quiescent current prolongs battery life.

Disadvantages

• Limited output current capability compared to other voltage regulators.
• Sensitive to external noise and disturbances.

Working Principles

AP431SHARTR-G1 operates based on the principle of a shunt regulator. It compares the reference voltage at the R pin with a fraction of the output voltage, adjusting the current flow through the internal shunt resistor to maintain a constant output voltage.

Detailed Application Field Plans

AP431SHARTR-G1 finds applications in various electronic systems, including:

1. Power supplies: Provides stable voltage references for power management circuits.
2. Battery charging circuits: Ensures precise voltage regulation during charging processes.
3. Audio amplifiers: Maintains consistent biasing voltages for improved audio quality.
4. Instrumentation systems: Offers accurate voltage references for measurement circuits.
5. Automotive electronics: Used in voltage monitoring and control circuits.

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to AP431SHARTR-G1 include:

1. TL431: A widely used adjustable precision shunt regulator.
2. LM4040: A series of precision voltage references available in different voltage options.
3. REF3030: Low-power, high-precision voltage reference ICs.
4. MAX6126: Ultra-low-noise, high-precision voltage references.

These alternative models provide similar functionality and can be chosen based on specific requirements and design constraints.

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