TL431AILPME3

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage References

Characteristics: - Adjustable Precision Shunt Regulator - Programmable Output Voltage - Low Dynamic Output Impedance - Wide Operating Current Range - High Accuracy and Temperature Stability

Package: TO-92, SOT-23, SOIC-8

Essence: The TL431AILPME3 is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits to regulate voltage levels.

Packaging/Quantity: Available in reels or tubes with varying quantities depending on the manufacturer's specifications.

Specifications

• Reference Voltage: 2.495V to 36V
• Operating Current Range: 1mA to 100mA
• Temperature Range: -40°C to +85°C
• Initial Accuracy: ±0.5%
• Dynamic Output Impedance: 0.22Ω
• Cathode Current: 1mA to 100mA

Pin Configuration

The TL431AILPME3 has three pins:

1. Anode (A): Connected to the positive supply voltage.
2. Cathode (K): Connected to the load or ground.
3. Reference (R): Provides the regulated output voltage.

Functional Features

• Adjustable Output Voltage: The TL431AILPME3 allows for precise adjustment of the output voltage by using external resistors.
• Low Dynamic Output Impedance: Ensures stability and accuracy of the regulated voltage even under varying load conditions.
• Wide Operating Current Range: Can handle a wide range of current requirements, making it suitable for various applications.
• High Accuracy and Temperature Stability: Provides consistent and reliable voltage regulation over a wide temperature range.

Advantages and Disadvantages

Advantages: - Precise voltage regulation - Wide operating current range - High accuracy and temperature stability - Easy to use and integrate into circuits

Disadvantages: - Requires external resistors for voltage adjustment - Limited output current capability compared to other voltage regulators

Working Principles

The TL431AILPME3 operates as a shunt regulator by comparing the reference voltage at the Reference (R) pin with the voltage across the Anode (A) and Cathode (K) pins. It adjusts the current flowing through the cathode to maintain a stable output voltage.

Detailed Application Field Plans

The TL431AILPME3 is widely used in various applications, including:

1. Voltage Regulation: Provides precise voltage references for power supplies, battery chargers, and voltage regulators.
2. Overvoltage Protection: Safeguards sensitive electronic components by clamping the voltage to a safe level during transient events.
3. Current Limiting: Controls the maximum current flow in circuits to protect devices from damage due to excessive current.
4. Temperature Compensation: Used in temperature-sensitive circuits to compensate for variations in voltage caused by temperature changes.

Detailed and Complete Alternative Models

Some alternative models that can be used as substitutes for the TL431AILPME3 include:

1. LM4040: Precision Micropower Shunt Voltage Reference
2. LT1009: Precision Reference
3. REF3030: Low Dropout Voltage Reference
4. MAX6126: Ultra-High-Precision Voltage Reference

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

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