TL1431ACZT

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - Adjustable precision shunt regulator - Low temperature coefficient - Wide operating voltage range - High stability and accuracy - Low dynamic impedance - Programmable output voltage

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

Essence: TL1431ACZT is a voltage reference IC that provides a stable and accurate output voltage.

Packaging/Quantity: Available in reels or tubes with various quantities depending on the package type.

Specifications

• Output Voltage Range: 2.5V to 36V
• Reference Voltage Tolerance: ±0.4%
• Temperature Coefficient: 50ppm/°C
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.5V to 36V
• Quiescent Current: 100µA

Pin Configuration

The TL1431ACZT 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 output voltage.

Functional Features

• TL1431ACZT acts as a precision shunt regulator, maintaining a constant voltage across the reference pin.
• It can be programmed to provide a specific output voltage by connecting external resistors.
• The device operates in a wide voltage range, making it suitable for various applications.
• TL1431ACZT exhibits low dynamic impedance, ensuring stability even under varying load conditions.
• It offers high accuracy and stability over a wide temperature range.

Advantages and Disadvantages

Advantages: - Adjustable output voltage allows flexibility in design. - High accuracy and stability ensure reliable performance. - Low dynamic impedance ensures stability under varying load conditions. - Wide operating voltage range makes it versatile.

Disadvantages: - Limited output current capability. - Requires external resistors for precise voltage selection.

Working Principles

TL1431ACZT operates as a shunt regulator by comparing the reference voltage at the R pin with an internal voltage reference. It adjusts the current flowing through the cathode to maintain a constant voltage across the reference pin. By connecting external resistors, the output voltage can be programmed to a desired value.

Detailed Application Field Plans

TL1431ACZT finds applications in various fields, including:

1. Power Supplies: It is used as a voltage reference in power supply circuits to provide stable and accurate voltages.
2. Battery Charging Systems: TL1431ACZT ensures precise voltage regulation during battery charging processes.
3. Instrumentation: It is utilized in measurement instruments where accurate voltage references are required.
4. Audio Equipment: TL1431ACZT helps maintain stable voltages in audio amplifiers and other audio devices.

Detailed and Complete Alternative Models

Some alternative models to TL1431ACZT include:

1. LM431: Similar adjustable precision shunt regulator with different package options.
2. REF3030: Voltage reference IC with higher accuracy and lower temperature coefficient.
3. LT1236: Precision shunt regulator with ultra-low temperature drift and high accuracy.

These alternative models offer similar functionality but may have different specifications and package options.

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