TL1431ACDT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Precision, Adjustable Output Voltage, Low Temperature Coefficient
• Package: SOIC-8
• Essence: TL1431ACDT is a precision shunt regulator that provides a stable reference voltage. It is commonly used in various electronic circuits where a precise voltage reference is required.
• Packaging/Quantity: TL1431ACDT is typically sold in reels of 2500 units.

Specifications

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

Pin Configuration

The TL1431ACDT IC has the following pin configuration:

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| | --| REF K |-- --| Vref A |-- --| Anode C |-- --| Cathode D |-- --| K B |-- --|___________| ```

Functional Features

• Precision Voltage Reference: TL1431ACDT provides a highly accurate and stable reference voltage.
• Adjustable Output Voltage: The output voltage can be easily adjusted using external resistors.
• Low Temperature Coefficient: The temperature coefficient of the TL1431ACDT is low, ensuring stability over a wide temperature range.
• Short Circuit Protection: The device incorporates short circuit protection to prevent damage under fault conditions.

Advantages and Disadvantages

Advantages: - High precision and stability - Adjustable output voltage - Wide operating temperature range - Short circuit protection

Disadvantages: - Limited output current capacity (up to 100mA) - Requires external resistors for voltage adjustment

Working Principles

The TL1431ACDT operates as a shunt regulator. It compares the reference voltage (Vref) with the input voltage and adjusts the current flowing through the cathode (C) and anode (A) pins to maintain a stable output voltage. By adjusting the resistance connected to the cathode pin, the output voltage can be precisely set.

Detailed Application Field Plans

The TL1431ACDT is widely used in various applications that require a stable voltage reference. Some common application fields include:

1. Power Supply Regulation: TL1431ACDT can be used as a voltage reference in power supply circuits to ensure stable output voltages.
2. Battery Charging: It is employed in battery charging circuits to provide accurate voltage references for charging control.
3. Analog-to-Digital Converters (ADC): TL1431ACDT is utilized in ADC circuits to provide a precise reference voltage for accurate analog-to-digital conversion.
4. Temperature Sensors: It can be used as a voltage reference in temperature sensor circuits to ensure accurate temperature measurements.

Detailed and Complete Alternative Models

Some alternative models to TL1431ACDT that offer similar functionality are:

1. LM4040: Precision Shunt Voltage Reference
2. LT1236: Low Drift Precision Voltage Reference
3. MAX6126: Ultra-Low Noise Precision Voltage Reference
4. REF3030: Micropower Voltage Reference

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

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