TL431ACZ

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TL431ACZ

IC VREF SHUNT ADJ 1% TO92-3

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Specifications

Package Bulk
ProductStatus Obsolete
ReferenceType Shunt
OutputType Adjustable
Voltage-Output(Min/Fixed) 2.495V
Voltage-Output(Max) 36 V
Current-Output 100 mA
Tolerance ±1%
TemperatureCoefficient 50ppm/°C Typical
Current-Cathode 1 mA
OperatingTemperature -25°C ~ 85°C (TA)
MountingType Through Hole
Package/Case TO-226-3, TO-92-3 (TO-226AA)

Overview

Description

The TL431ACZ is a precision programmable reference voltage IC, commonly used in various electronic applications for precise voltage regulation and control. It functions as a shunt regulator, providing a stable reference voltage with low temperature coefficient and tight tolerance. This makes it ideal for use in power supplies, battery chargers, and other circuits requiring precise voltage control.
Key features of the TL431ACZ include an adjustable output voltage range from 2.5V to 36V, achieved by connecting external resistors. It typically operates with a reference voltage of 2.5V when the cathode current is between 1mA to 100mA. The device's accuracy is enhanced through low output noise and wide bandwidth, contributing to its stable performance in dynamic conditions.
The TL431ACZ is available in several package options, such as TO-92, SOT-23, and SOIC, making it versatile for various design requirements. Its ability to function with minimal external components and high reliability makes it a popular choice for circuit designers needing an adjustable precision reference.

Features

The TL431ACZ is a precision programmable voltage reference with features that make it suitable for a variety of applications, including power supplies and adjustable regulators. Key features include:
1. Adjustable Output Voltage: The output voltage can be set to any value between 2.5V and 36V with the use of two external resistors.
2. Wide Operating Range: It operates over a wide range of cathode currents, typically from 1 mA to 100 mA.
3. High Accuracy: The TL431ACZ offers a tight voltage tolerance, with an accuracy of ±1% at 25°C, ensuring precision in applications requiring stable voltage references.
4. Low Output Impedance: The device exhibits a low output impedance, typically less than 0.2 ohms, improving stability in feedback loops.
5. Temperature Stability: It features excellent temperature stability, with a temperature coefficient of 50 ppm/°C, making it suitable for use in environments with varying temperatures.
6. Package Options: Available in various packages including TO-92, enhancing flexibility in design layouts.
These features make the TL431ACZ a versatile component for use in precision voltage regulation and control circuits.

Package

The TL431ACZ is a programmable precision shunt regulator, commonly available in a TO-92 package type. The TO-92 is a small, plastic, through-hole package suitable for various low-power applications.

Pinout

The TL431ACZ is a precision programmable voltage reference device commonly used for voltage regulation and operational amplifier circuits. It typically comes in a TO-92 package, among others like SOIC-8 and SOT-23, but in the TO-92 package, it has a 3-pin configuration.
1. Pin 1 (Ref): This is the reference input pin. It is used to set the reference voltage. By connecting this pin to a resistor divider, you can program the output voltage.
2. Pin 2 (Anode): This is the anode pin. It is usually connected to the ground in most configurations for voltage regulation. It acts in conjunction with the cathode to provide a stable reference voltage.
3. Pin 3 (Cathode): This is the cathode pin and serves as the output. The device sinks current from the load, and this pin is used to deliver the regulated output voltage.
The TL431ACZ functions by providing a stable and adjustable output voltage over a wide range of currents, which makes it ideal for use as a shunt regulator in various electronic applications.

Manufacturer

The TL431ACZ is a precision adjustable shunt regulator manufactured by multiple companies, including Texas Instruments and ON Semiconductor (now onsemi). Texas Instruments is an American technology company known for designing and manufacturing semiconductors and various integrated circuits. It is one of the world's largest manufacturers of semiconductors and a key player in analog technology. Onsemi, formerly known as ON Semiconductor, is another significant player in the semiconductor industry, focusing on energy-efficient electronics, including power management and sensing technologies. Both companies serve a wide range of industries, including automotive, industrial, personal electronics, communications, and computing.

Application

The TL431ACZ is a precision programmable voltage reference widely used in various applications. It is commonly utilized in power supplies for voltage regulation and as a feedback element in switching power supplies. Additionally, it serves as an error amplifier in control loops, a comparator in battery chargers, and a reference voltage in analog-to-digital converters. Its versatility and stability make it suitable for use in instrumentation, consumer electronics, and communication equipment, ensuring accurate voltage control and regulation.

Equivalent

The TL431ACZ is a programmable precision shunt regulator. Equivalent products include the LM431, KA431, LMV431, and AS431. These components offer similar functionality, performance, and pin configurations, making them suitable replacements in most applications. Always double-check the specifications of each equivalent part to ensure compatibility with your specific circuit requirements.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

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