TL1431CDRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: Precision, Adjustable, Shunt Regulator
• Package: SOIC-8
• Essence: TL1431CDRE4 is a precision shunt regulator IC that provides a stable reference voltage for various applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Reference Voltage Range: 2.5V to 36V
• Output Current: Up to 100mA
• Operating Temperature Range: -40°C to +85°C
• Line Regulation: 0.02%/V
• Load Regulation: 0.4%/mA
• Initial Accuracy: ±0.4%
• Temperature Stability: ±50ppm/°C

Pin Configuration

The TL1431CDRE4 IC has the following pin configuration:

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

Functional Features

• Precision Voltage Reference: The TL1431CDRE4 provides a highly accurate and stable reference voltage.
• Adjustable Output: The output voltage can be adjusted using external resistors to suit specific requirements.
• Shunt Regulator: It operates as a shunt regulator, maintaining a constant voltage across the load.
• Low Power Consumption: The IC consumes very low power, making it suitable for battery-powered applications.
• Wide Operating Voltage Range: The reference voltage can be set between 2.5V and 36V, providing flexibility in various applications.

Advantages and Disadvantages

Advantages: - High precision and stability - Adjustable output voltage - Low power consumption - Wide operating voltage range

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

Working Principles

The TL1431CDRE4 operates as a shunt regulator. It compares the reference voltage (Vref) with the voltage across the load and adjusts the current flowing through the cathode terminal to maintain a constant voltage across the load. By adjusting the resistance connected to the REF pin, the output voltage can be set to the desired value.

Detailed Application Field Plans

The TL1431CDRE4 is widely used in various applications, including:

1. Voltage Regulation: It is commonly used as a precision voltage reference in power supplies, battery chargers, and voltage regulators.
2. Overvoltage Protection: The IC can be employed to protect sensitive electronic components from excessive voltage by acting as a crowbar circuit.
3. Current Limiting: It can be utilized as a current limiter in circuits to prevent damage due to excessive current flow.
4. Temperature Sensors: The TL1431CDRE4 can be incorporated into temperature sensor circuits to provide accurate temperature measurements.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TL1431CDRE4 are:

1. LM431: This is a popular alternative from Texas Instruments with comparable specifications and pin configuration.
2. TL431: Another alternative from Texas Instruments, offering adjustable precision voltage reference capabilities.
3. LT1431: A similar shunt regulator IC from Linear Technology, suitable for precision voltage regulation applications.

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

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