TLV431ILPR

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Low Voltage Reference - Programmable Output Voltage - Low Quiescent Current - High Accuracy - Wide Operating Range

Package: SOT-23 (Small Outline Transistor 23)

Essence: The TLV431ILPR is a precision shunt regulator that can be used as a voltage reference in various electronic circuits. It provides a stable and accurate output voltage, making it suitable for applications requiring precise voltage references.

Packaging/Quantity: The TLV431ILPR is available in a SOT-23 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Reference Voltage Range: 1.24V to 6V
• Operating Temperature Range: -40°C to +85°C
• Output Current: Up to 100mA
• Quiescent Current: Typically 60µA
• Accuracy: ±1%
• Line Regulation: 0.2%/V
• Load Regulation: 0.4%/mA

Detailed Pin Configuration

The TLV431ILPR has three pins:

1. Anode (A): Connected to the positive supply voltage.
2. Cathode (K): Output pin providing the regulated voltage.
3. Reference (R): Connected to an external resistor to set the desired output voltage.

Functional Features

• Adjustable Output Voltage: The TLV431ILPR allows the user to program the desired output voltage by connecting an external resistor between the reference pin and ground.
• Precision Shunt Regulation: It maintains a stable output voltage by shunting excess current to ground.
• Low Quiescent Current: The device consumes very low current when in operation, minimizing power consumption.
• High Accuracy: The TLV431ILPR provides a highly accurate output voltage with a tolerance of ±1%.
• Wide Operating Range: It can operate over a wide range of temperatures and supply voltages.

Advantages and Disadvantages

Advantages: - Precise and stable voltage reference - Adjustable output voltage - Low quiescent current consumption - High accuracy - Wide operating range

Disadvantages: - Limited output current capability (up to 100mA) - Requires an external resistor for voltage programming

Working Principles

The TLV431ILPR operates as a shunt regulator. It compares the voltage at the reference pin (R) with an internal reference voltage of 1.24V. By adjusting the resistance connected between the reference pin and ground, the output voltage can be set to the desired value. When the input voltage exceeds the programmed output voltage, the TLV431ILPR shunts excess current to ground, maintaining a constant output voltage.

Detailed Application Field Plans

The TLV431ILPR is widely used in various electronic applications, including:

1. Voltage References: It serves as a precise voltage reference in analog-to-digital converters, digital-to-analog converters, and other circuits requiring accurate voltage references.
2. Power Supplies: It can be used as a voltage reference in power supply circuits to provide stable and accurate output voltages.
3. Battery Management Systems: The TLV431ILPR is employed in battery management systems to monitor and regulate battery voltage levels.
4. Audio Amplifiers: It finds application in audio amplifiers to provide a stable bias voltage for optimal amplifier performance.
5. Temperature Sensors: It is utilized in temperature sensor circuits to generate a stable reference voltage for accurate temperature measurements.

Detailed and Complete Alternative Models

Some alternative models to the TLV431ILPR include:

1. LM4040: Precision Micropower Shunt Voltage Reference
2. LT1009: Precision Reference
3. MAX6126: Ultra-High-Precision Voltage Reference
4. REF102: Precision Voltage Reference
5. ADR4550: Precision Micropower Voltage Reference

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

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