TLV431BIDBVR

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Low Output Noise - High Accuracy - Low Dropout Voltage - Wide Operating Range

Package: SOT-23 (Small Outline Transistor 23)

Essence: The TLV431BIDBVR is a precision shunt regulator that can be used to provide a stable reference voltage in various electronic circuits.

Packaging/Quantity: The TLV431BIDBVR is typically sold in reels of 3000 units.

Specifications

• Reference Voltage: Adjustable from 1.24V to 16V
• Initial Accuracy: ±1%
• Temperature Coefficient: 50ppm/°C
• Operating Temperature Range: -40°C to +125°C
• Dropout Voltage: 0.5V (typical)
• Maximum Cathode Current: 100mA

Detailed Pin Configuration

The TLV431BIDBVR has three pins:

1. Anode (A): Connected to the positive supply voltage.
2. Cathode (C): Provides the regulated output voltage.
3. Reference (R): Connects to an external resistor to set the desired output voltage.

Functional Features

• Adjustable Output Voltage: By connecting an external resistor between the Reference (R) and Cathode (C) pins, the TLV431BIDBVR can provide a precise and adjustable output voltage.
• Precision Shunt Regulation: The TLV431BIDBVR maintains a stable output voltage by shunting excess current to ground.
• Low Output Noise: The device ensures minimal noise interference in sensitive applications.
• High Accuracy: With an initial accuracy of ±1%, the TLV431BIDBVR provides reliable voltage references.
• Low Dropout Voltage: The device operates with a low dropout voltage, minimizing power dissipation.

Advantages and Disadvantages

Advantages: - Adjustable output voltage allows flexibility in circuit design. - High accuracy ensures precise voltage references. - Low dropout voltage reduces power dissipation. - Small package size (SOT-23) enables space-saving designs.

Disadvantages: - Limited maximum cathode current of 100mA. - Requires an external resistor for voltage adjustment.

Working Principles

The TLV431BIDBVR operates as a precision shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage across the Anode (A) and Cathode (C) pins. By adjusting the resistance connected to the Reference (R) pin, the output voltage can be precisely set. Excess current is shunted from the Cathode (C) pin to ground, maintaining a stable output voltage.

Detailed Application Field Plans

The TLV431BIDBVR finds applications in various electronic circuits, including:

1. Voltage References: Provides a stable reference voltage for analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other precision measurement systems.
2. Power Supplies: Used as a voltage reference in linear regulators and switching power supplies to ensure accurate and stable output voltages.
3. Battery Management Systems: Monitors battery voltage levels and provides voltage references for battery charging and protection circuits.
4. Audio Amplifiers: Utilized as a voltage reference in audio amplifiers to maintain accurate signal levels and minimize distortion.

Detailed and Complete Alternative Models

Some alternative models to the TLV431BIDBVR include:

1. LM4040: Precision Shunt Voltage Reference
2. LT1236: Micropower Precision Shunt Voltage Reference
3. MAX6126: Ultra-High-Precision Voltage Reference
4. REF3030: Low-Noise, Very Low Drift Precision Voltage Reference

These alternative models offer similar functionality and can be considered based on specific application requirements.

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