TLV431IDBZR

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Low Output Noise - High Accuracy - Low Temperature Drift - Wide Operating Range

Package: SOT-23-3

Essence: The TLV431IDBZR is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits to maintain a constant voltage level.

Packaging/Quantity: The TLV431IDBZR is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Reference Voltage: Adjustable from 1.24V to 6V
• Initial Accuracy: ±1%
• Temperature Coefficient: 50 ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Input Current: 80 µA (typical)
• Output Current: 1 mA to 100 mA

Detailed Pin Configuration

The TLV431IDBZR has three pins:

1. Anode (A): Connected to the input voltage.
2. Cathode (K): Connected to the ground or reference voltage.
3. Adjust (ADJ): Provides the adjustable reference voltage output.

Functional Features

• Adjustable Output: The TLV431IDBZR allows for precise adjustment of the reference voltage within the specified range.
• Low Output Noise: Ensures a stable and noise-free reference voltage.
• High Accuracy: Provides a highly accurate reference voltage, suitable for precision applications.
• Low Temperature Drift: Maintains stability over a wide temperature range.
• Wide Operating Range: Can operate in a wide range of input and output voltages.

Advantages and Disadvantages

Advantages: - Precise and stable reference voltage - Low output noise - High accuracy - Wide operating range

Disadvantages: - Limited output current capability (up to 100 mA) - Requires external components for certain applications

Working Principles

The TLV431IDBZR operates as a shunt regulator, maintaining a constant reference voltage between the Anode and Cathode pins. By adjusting the voltage at the Adjust pin, the desired reference voltage can be set. The TLV431IDBZR compares the input voltage with the reference voltage and adjusts the current flow through the device to maintain a stable output voltage.

Detailed Application Field Plans

The TLV431IDBZR is widely used in various electronic applications, including:

1. Voltage Regulation: It can be used as a precision voltage reference in power supplies, battery chargers, and voltage regulators.
2. Amplifier Biasing: It is suitable for biasing amplifiers and operational amplifiers to ensure stable and accurate operation.
3. Temperature Sensors: The TLV431IDBZR can be used as a temperature sensor by utilizing its temperature coefficient to measure temperature variations accurately.
4. Current Limiting: It can be employed as a current limiter to protect sensitive components from excessive current flow.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TLV431IDBZR are:

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

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

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