TL1431IYDT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Adjustable, Precision, Shunt Regulator
• Package: SOT-23-3
• Essence: TL1431IYDT is a voltage reference IC that provides a stable and precise output voltage.
• Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

• Reference Voltage Range: 2.5V to 36V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Line Regulation: 0.2% typical
• Load Regulation: 0.4% typical
• Temperature Stability: 50ppm/°C typical
• Package Type: SOT-23-3

Pin Configuration

The TL1431IYDT has three pins arranged as follows:

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1. Pin 1: Anode (A)
2. Pin 2: Cathode (K)
3. Pin 3: Reference Voltage (Vref)

Functional Features

• Adjustable Output Voltage: The TL1431IYDT allows the user to set the desired output voltage within the specified range.
• Precision Voltage Reference: It provides a highly accurate and stable reference voltage for various applications.
• Shunt Regulator: The IC acts as a shunt regulator, maintaining a constant voltage across the load.

Advantages and Disadvantages

Advantages: - Wide operating voltage range - High precision and stability - Low temperature coefficient - Small package size - Easy to use and integrate into circuits

Disadvantages: - Limited output current capacity - Requires external resistors for voltage adjustment

Working Principles

The TL1431IYDT is based on the principle of a shunt regulator. It compares the reference voltage (Vref) with the voltage across a resistor divider network connected to the input voltage. By adjusting the resistance values, the desired output voltage can be obtained. The internal circuitry of the IC ensures that the output voltage remains stable and precise, even with variations in input voltage and load conditions.

Detailed Application Field Plans

The TL1431IYDT finds applications in various fields, including:

1. Power Supply Regulation: It can be used as a voltage reference in power supply circuits to maintain a stable output voltage.
2. Battery Charging: The IC can be employed in battery charging circuits to provide a precise reference voltage for controlling the charging process.
3. Instrumentation: It is suitable for precision measurement instruments where accurate voltage references are required.
4. Audio Equipment: The TL1431IYDT can be utilized in audio equipment to ensure consistent voltage levels for improved audio quality.

Detailed and Complete Alternative Models

Some alternative models to TL1431IYDT include:

1. LM431: A similar adjustable precision shunt regulator IC offered by Texas Instruments.
2. REF02: A precision voltage reference IC manufactured by Analog Devices.
3. MAX6126: An ultra-low noise, high precision voltage reference IC from Maxim Integrated.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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