TL431FDT,215

Product Overview

Category

The TL431FDT,215 belongs to the category of voltage references and shunt regulators.

Use

It is commonly used in electronic circuits to provide a stable reference voltage for various applications.

Characteristics

• Voltage Reference: The TL431FDT,215 provides a precise reference voltage that can be adjusted.
• Shunt Regulator: It acts as a shunt regulator by controlling the current flow through an external resistor.
• Adjustable Output: The output voltage can be easily adjusted using two external resistors.
• Low Power Consumption: It operates with low power consumption, making it suitable for battery-powered devices.

Package

The TL431FDT,215 is available in a small surface-mount SOT-23 package.

Essence

The essence of TL431FDT,215 lies in its ability to provide a stable and adjustable reference voltage for electronic circuits.

Packaging/Quantity

The TL431FDT,215 is typically packaged in reels containing 3000 units.

Specifications

• Reference Voltage Range: 2.495V to 36V
• Operating Temperature Range: -40°C to +85°C
• Output Current: Up to 100mA
• Reference Voltage Tolerance: ±1%
• Cathode Current: 1mA to 100mA

Detailed Pin Configuration

The TL431FDT,215 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

• Adjustable Output: The TL431FDT,215 allows for precise adjustment of the output voltage using external resistors.
• Overvoltage Protection: It offers protection against overvoltage conditions, safeguarding the connected circuitry.
• Low Output Impedance: The TL431FDT,215 has a low output impedance, ensuring stability and accuracy of the reference voltage.
• Fast Response Time: It responds quickly to changes in input voltage, making it suitable for dynamic applications.

Advantages and Disadvantages

Advantages

• Precise and adjustable reference voltage.
• Low power consumption.
• Overvoltage protection.
• Small package size.

Disadvantages

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

Working Principles

The TL431FDT,215 operates based on the principle of a shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage across an external resistor connected between the Anode (A) and Cathode (K) pins. By adjusting the resistance value, the output voltage can be precisely set.

Detailed Application Field Plans

The TL431FDT,215 finds applications in various electronic circuits, including:

1. Voltage Regulators: It is used as a voltage reference in linear regulators to provide stable output voltages.
2. Switching Power Supplies: It helps regulate the output voltage in switching power supplies, improving efficiency and stability.
3. Battery Charging Circuits: The TL431FDT,215 ensures accurate charging voltage control in battery charging circuits.
4. Audio Amplifiers: It is employed in audio amplifiers to maintain a stable bias voltage for improved audio quality.

Detailed and Complete Alternative Models

Some alternative models to TL431FDT,215 include:

1. TL431ACLP: Similar functionality with different package options.
2. TLV431BQDBZR: Adjustable precision shunt regulator with enhanced features.
3. LM4040AIM3-2.5/NOPB: Precision voltage reference with fixed output voltage.

These alternative models offer similar voltage reference capabilities and can be considered based on specific requirements.

In conclusion, the TL431FDT,215 is a voltage reference and shunt regulator that provides a stable and adjustable reference voltage for electronic circuits. Its small package size, low power consumption, and overvoltage protection make it suitable for various applications in different fields. While it has limitations in output current capability and requires external resistors for voltage adjustment, alternative models are available to cater to specific needs.