TL431BILPRE3

Product Overview

Category

The TL431BILPRE3 belongs to the category of voltage references.

Use

It is commonly used as a precision shunt regulator in various electronic circuits.

Characteristics

• Provides a stable reference voltage for precise voltage regulation.
• Offers high accuracy and low temperature coefficient.
• Operates over a wide temperature range.
• Can be easily programmed for different output voltages.

Package

The TL431BILPRE3 comes in a small SOT-23 package, which is suitable for surface mount applications.

Essence

The essence of TL431BILPRE3 lies in its ability to maintain a constant voltage reference, ensuring accurate and reliable performance in electronic systems.

Packaging/Quantity

This product is typically available in reels containing a specified quantity of units, such as 3000 pieces per reel.

Specifications

• Reference Voltage: 2.5V to 36V
• Operating Temperature Range: -40°C to +85°C
• Output Current: Up to 100mA
• Initial Accuracy: ±1%
• Temperature Coefficient: 50ppm/°C

Detailed Pin Configuration

The TL431BILPRE3 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 stable reference voltage.

Functional Features

• Programmable Output Voltage: The TL431BILPRE3 can be easily programmed to provide a specific output voltage by selecting appropriate external resistors.
• Low Output Impedance: It exhibits low output impedance, allowing it to drive loads with minimal voltage drop.
• Short Circuit Protection: The device incorporates short circuit protection, preventing damage to the circuit in case of a fault condition.

Advantages and Disadvantages

Advantages

• High accuracy and stability.
• Wide operating temperature range.
• Easy to use and program.
• Small package size for space-constrained applications.

Disadvantages

• Limited output current capability.
• Requires external resistors for voltage programming.

Working Principles

The TL431BILPRE3 operates based on the principle of a shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage across the external resistor network connected between the Anode (A) and Cathode (K) pins. By adjusting the current flowing through the internal reference resistor, it maintains a constant voltage drop across the external resistors, thus regulating the output voltage.

Detailed Application Field Plans

The TL431BILPRE3 finds extensive application in various electronic systems, including:

1. Power Supplies: It is used as a voltage reference in linear and switching power supplies to ensure stable and accurate output voltages.
2. Battery Charging Systems: The TL431BILPRE3 is employed in battery charging circuits to regulate the charging voltage and prevent overcharging.
3. Audio Amplifiers: It can be utilized in audio amplifiers to provide a stable bias voltage for improved audio performance.
4. Voltage Monitors: The TL431BILPRE3 is used in voltage monitoring circuits to detect and respond to voltage variations.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TL431BILPRE3 include:

1. LM4040: A precision voltage reference with low dropout voltage and excellent temperature stability.
2. LT1236: A high-precision shunt voltage reference with ultra-low drift and noise characteristics.
3. REF3030: A low-power, high-accuracy voltage reference suitable for portable and battery-powered applications.

These alternative models can be considered based on specific requirements and design constraints.

Word count: 511 words