TLV431QPKG3

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Low voltage shunt regulator - Adjustable output voltage - High accuracy and stability - Low quiescent current - Wide operating temperature range

Package: TO-252-3 (DPAK)

Essence: The TLV431QPKG3 is a low voltage shunt regulator IC used for providing a stable reference voltage in various electronic circuits.

Packaging/Quantity: The TLV431QPKG3 is available in a TO-252-3 package, also known as DPAK (Plastic Package). It is typically sold in reels or tubes containing multiple units.

Specifications

• Reference Voltage Range: 1.24V to 6V
• Operating Voltage Range: 2.5V to 16V
• Quiescent Current: 60µA (typical)
• Temperature Range: -40°C to +125°C
• Output Current: Up to 100mA

Pin Configuration

The TLV431QPKG3 has three pins:

1. Anode (A): Connected to the input voltage.
2. Cathode (C): Connected to the ground or reference voltage.
3. Adjust (ADJ): Output pin for the adjustable reference voltage.

Functional Features

• Adjustable Output Voltage: The TLV431QPKG3 allows users to set the desired output voltage within the specified range.
• High Accuracy and Stability: Provides a highly accurate and stable reference voltage over a wide temperature range.
• Low Quiescent Current: Consumes very low current when not actively regulating the voltage, resulting in power savings.
• Wide Operating Temperature Range: Can operate reliably in extreme temperature conditions.

Advantages and Disadvantages

Advantages: - Adjustable output voltage allows for flexibility in various applications. - High accuracy and stability ensure precise voltage regulation. - Low quiescent current minimizes power consumption. - Wide operating temperature range enables usage in harsh environments.

Disadvantages: - Limited output current capability (up to 100mA). - Requires external components for proper operation. - Not suitable for high-power applications.

Working Principles

The TLV431QPKG3 operates as a shunt regulator, maintaining a stable reference voltage between the Anode and Cathode pins. By adjusting the voltage at the Adjust pin, the output voltage can be set within the specified range. The internal circuitry of the IC compares the reference voltage with the input voltage and adjusts the current flowing through the device to maintain a constant output voltage.

Detailed Application Field Plans

The TLV431QPKG3 is widely used in various electronic circuits that require a stable reference voltage. Some common application areas include:

1. Voltage Regulation: Used as a precision voltage reference in power supplies, battery chargers, and voltage regulators.
2. Temperature Sensors: Provides a stable reference voltage for temperature sensors and thermostats.
3. Audio Amplifiers: Used as a biasing element in audio amplifiers to maintain a stable operating point.
4. Battery Management Systems: Utilized in battery management systems to monitor and control charging and discharging processes.

Detailed and Complete Alternative Models

Some alternative models to the TLV431QPKG3 that offer similar functionality are:

1. LM4040: Precision Micropower Shunt Voltage Reference
2. LT1236: Precision Reference
3. MAX6001: Low-Power, Precision Voltage Reference
4. REF02: Precision Voltage Reference

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

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