TLV431ALPRPG

Product Overview

Category

The TLV431ALPRPG 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.
• Operates over a wide range of input voltages.
• Can be used as a replacement for Zener diodes in many applications.

Package

The TLV431ALPRPG is available in a small SOT-23 package.

Essence

This product is an adjustable precision shunt regulator that maintains a constant voltage across a load.

Packaging/Quantity

The TLV431ALPRPG is typically sold in reels containing 3000 units per reel.

Specifications

• Reference Voltage: Adjustable from 1.24V to 16V
• Input Voltage Range: 2.5V to 36V
• Output Current: Up to 100mA
• Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The TLV431ALPRPG has three pins:

1. Anode (A): Connected to the input voltage source.
2. Cathode (C): Connected to the ground or reference voltage.
3. Adjust (ADJ): Used to adjust the output voltage.

Functional Features

• Precise voltage regulation: The TLV431ALPRPG ensures a stable output voltage regardless of changes in the input voltage or load conditions.
• Adjustable output voltage: The ADJ pin allows users to set the desired output voltage within the specified range.
• Low quiescent current: The device consumes minimal current when not actively regulating the voltage, resulting in improved power efficiency.
• Fast response time: The TLV431ALPRPG quickly responds to changes in the input voltage, providing rapid voltage stabilization.

Advantages and Disadvantages

Advantages

• High precision and low temperature coefficient ensure accurate voltage regulation.
• Wide input voltage range allows for versatile applications.
• Small package size enables space-saving designs.
• Adjustable output voltage provides flexibility in circuit design.

Disadvantages

• Limited output current compared to other voltage regulators.
• Requires external components for proper operation.
• Sensitivity to noise and fluctuations in the input voltage.

Working Principles

The TLV431ALPRPG operates as a shunt regulator by maintaining a constant voltage drop across the load. It compares the reference voltage at the ADJ pin with an internal voltage reference, adjusting the current flowing through the shunt resistor to stabilize the output voltage.

Detailed Application Field Plans

The TLV431ALPRPG finds applications in various electronic systems, including:

1. Power supplies: It ensures stable voltage levels in power supply circuits, preventing damage to sensitive components.
2. Battery charging circuits: The TLV431ALPRPG regulates the charging voltage, protecting the battery from overcharging.
3. Voltage monitoring circuits: It can be used to monitor and control voltage levels in different parts of a system.
4. Audio amplifiers: The TLV431ALPRPG helps maintain a consistent bias voltage for improved audio quality.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TLV431ALPRPG include:

1. LM4040: A precision voltage reference with adjustable output voltage.
2. REF3030: A low-power, high-precision voltage reference suitable for portable devices.
3. LT1236: A micropower precision shunt voltage reference with excellent temperature stability.

These alternatives provide comparable features and can be considered based on specific application requirements.

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