TL431ACPK

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TL431ACPK

+Nomenclature

IC VREF SHUNT ADJ 1% SOT89-3

  • FabricantTexas Instruments

  • Pièce fabricant #TL431ACPK

  • Package SOT-89 (PK)-3

  • En stock2755

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Spécifications

Attribut Valeur
Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Active
ReferenceType Shunt
OutputType Adjustable
Voltage-Output(Min/Fixed) 2.495V
Voltage-Output(Max) 36 V
Current-Output 100 mA
Tolerance ±1%
Current-Cathode 600 µA
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case TO-243AA

Présentation

Description

The TL431ACPK is a precision programmable voltage reference from Texas Instruments. It is widely used in electronic circuits for its ability to provide a stable reference voltage, making it ideal for applications such as switching power supplies, voltage monitors, and error amplifiers. The TL431ACPK operates over a wide voltage range, typically from 2.5V to 36V, and allows for adjustable output voltages using an external resistor divider network.
Key features include a low output voltage tolerance of ±0.5%, good thermal stability, and a fast response time, which enhances its performance in dynamic applications. The device can sink up to 100 mA of current, making it versatile for various load conditions. It is available in different package options, including SOT-23, which is suitable for compact circuit designs. The precision and reliability of the TL431ACPK make it a popular choice for designers requiring accurate voltage regulation and reference in their circuits.

Equivalent

The TL431ACPK is a precision adjustable shunt regulator. Equivalent products include the LM431, KA431, AZ431, and AS431. These components generally offer similar functionality with varying specifications in terms of reference voltage accuracy, temperature coefficient, and package options. Always check the specific datasheet of each component for compatibility with your design requirements.

Features

The TL431ACPK is a precision programmable voltage reference with the following features:
1. Adjustable Output Voltage: It offers an adjustable output voltage range from 2.495 V to 36 V, making it versatile for various applications.
2. Precision: It provides a tight voltage tolerance of ±0.5%, ensuring accuracy and reliability.
3. Sink Current Capability: The device can handle a sink current range of 1 mA to 100 mA, allowing for flexibility in different circuit designs.
4. Temperature Stability: With a temperature coefficient typically around 50 ppm/°C, it maintains stable performance across a wide temperature range.
5. Low Output Noise: It features low output noise characteristics, which is beneficial for sensitive applications.
6. Wide Operating Temperature Range: The TL431ACPK operates effectively from -40°C to +125°C, suitable for industrial and consumer applications.
7. Package Options: Available in a variety of packages, including TO-92, SOT-23, and SOIC, to accommodate different design constraints.
These features make the TL431ACPK ideal for use in power supplies, battery chargers, and other applications where precise voltage regulation is required.

Pinout

The TL431ACPK is a precision programmable shunt voltage reference. It typically comes in a 3-pin package, such as TO-92, SOT-23, or similar. The three pins are commonly referred to as:
1. Reference (Ref): This pin is used to set the reference voltage by connecting it to a resistive divider network. It allows the device to regulate the output voltage.

2. Anode (A): This pin is connected to the lower potential side of the load circuit. It is the terminal where the current flows out from the device.
3. Cathode (K): This pin serves as the output of the device where the regulated voltage is maintained. Current flows into the device through this pin.
The TL431ACPK functions as an adjustable voltage reference over a range of about 2.5V to 36V, making it suitable for a variety of applications, including power supplies and adjustable regulators. It achieves precise voltage regulation with a typical tolerance of about ±0.5%.

Manufacturer

The TL431ACPK is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is a global technology company that designs and manufactures semiconductors and various integrated circuits, which are utilized in a wide range of electronic applications. Founded in 1930 and headquartered in Dallas, Texas, TI is well-known for its role in the development and production of both analog and embedded processing products. The company serves numerous industries including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI's products are crucial for modern electronic devices, providing critical functionalities such as signal processing, power management, and data conversion.

Application

The TL431ACPK is a programmable voltage reference commonly used in various applications. Key areas include:
1. Voltage Regulation: It's used in power supplies for precise voltage regulation.
2. Shunt Regulator: Functions as a shunt regulator in low-current applications.
3. Switching Power Supplies: Employed for feedback control in isolated switching power supplies.
4. Battery Chargers: Ensures accurate charging voltage in battery management systems.
5. Data Acquisition Systems: Provides stable reference voltage for ADCs.
6. Overvoltage Protection: Protects circuits by maintaining a stable reference point.
7. LED Drivers: Used for maintaining consistent LED brightness.
These applications leverage its ability to maintain a stable reference over varying conditions.

Package

The TL431ACPK is a three-terminal adjustable shunt regulator. Its package type is commonly known as SOT-89, which is a surface-mount package used for electronic components.