TLV431BIDCKR

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Low Output Voltage Deviation Over Temperature - High Accuracy (±1%) - Low Quiescent Current (80 µA typical) - Wide Operating Voltage Range (1.24 V to 18 V) - Low Dynamic Output Impedance - Sink Current Capability up to 100 mA - Small SOT-23 Package

Package: SOT-23-3

Essence: The TLV431BIDCKR is an adjustable precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits where a precise voltage reference is required.

Packaging/Quantity: The TLV431BIDCKR is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Reference Voltage: Adjustable from 1.24 V to 18 V
• Initial Accuracy: ±1%
• Quiescent Current: 80 µA typical
• Sink Current Capability: Up to 100 mA
• Operating Temperature Range: -40°C to +125°C
• Package Type: SOT-23-3

Detailed Pin Configuration

The TLV431BIDCKR has three pins:

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

Functional Features

• Adjustable Reference Voltage: The TLV431BIDCKR allows the user to adjust the reference voltage according to their specific requirements.
• High Accuracy: With an initial accuracy of ±1%, this voltage reference ensures precise and reliable performance.
• Low Quiescent Current: The low quiescent current of 80 µA helps in reducing power consumption.
• Wide Operating Voltage Range: The TLV431BIDCKR can operate within a wide voltage range, from 1.24 V to 18 V.
• Low Dynamic Output Impedance: It exhibits a low dynamic output impedance, ensuring stability even with varying load conditions.
• Sink Current Capability: The device can sink current up to 100 mA, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - Adjustable reference voltage allows flexibility in design. - High accuracy ensures precise voltage regulation. - Low quiescent current reduces power consumption. - Wide operating voltage range provides versatility. - Small package size saves board space.

Disadvantages: - Limited sink current capability compared to some other voltage references. - Not suitable for applications requiring high output currents.

Working Principles

The TLV431BIDCKR operates as a shunt regulator, maintaining a stable reference voltage between the cathode (C) and reference (R) pins. By adjusting the resistor divider network connected to the reference pin, the desired output voltage can be set. The TLV431BIDCKR compares the reference voltage with the input voltage and adjusts the current flowing through the shunt resistor to maintain a constant output voltage.

Detailed Application Field Plans

The TLV431BIDCKR finds applications in various fields, including:

1. Voltage Regulation: It is commonly used as a precision voltage reference in power supplies, battery chargers, and voltage regulators.
2. Temperature Sensors: The TLV431BIDCKR can be employed as a temperature sensor by utilizing its voltage output to measure temperature variations.
3. Audio Amplifiers: It can be utilized as a biasing element in audio amplifiers to stabilize the output voltage and improve overall performance.
4. Battery Management Systems: The TLV431BIDCKR is suitable for battery management systems, ensuring accurate voltage monitoring and control.

Detailed and Complete Alternative Models

Some alternative models to the TLV431BIDCKR include:

1. LM4040: Precision Micropower Shunt Voltage Reference
2. LT1009: Precision Reference
3. MAX6001: Low-Power, Precision Voltage Reference
4. REF02: Precision Voltage Reference

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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