TL431ACDT

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TL431ACDT

IC VREF SHUNT ADJ 1% 8SO

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規格

Package Tape & Reel (TR),Cut Tape (CT)
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 8-SOIC (0.154, 3.90mm Width)

概述

Description

The TL431ACDT is a precision programmable voltage reference from Texas Instruments. It features a shunt regulator designed to maintain a stable voltage over a wide range of input voltages and operating temperatures. This device is typically used in applications requiring precision voltage regulation, such as power supplies, battery management systems, and data converters.
Key characteristics of the TL431ACDT include a reference voltage of 2.495 volts, adjustable output voltage via an external resistor network, and a wide operating current range from 1 mA to 100 mA. It offers a tight voltage tolerance of about ±0.5%, enhancing its reliability in critical applications.
The TL431ACDT comes in a surface-mount SOT-23 package, making it suitable for compact designs. Its operating temperature range is typically from -40°C to +125°C, ensuring robust performance in various environmental conditions.
Overall, the TL431ACDT is valued for its precision, flexibility, and stability, making it a popular choice for designers looking for reliable voltage regulation solutions.

Features

The TL431ACDT is a three-terminal adjustable shunt regulator that offers precise voltage regulation. Key features include:
1. Adjustable Output Voltage: It allows output voltage to be set anywhere from 2.5V to 36V with two external resistors, providing flexibility for various applications.

2. Precision: It boasts a typical reference voltage tolerance of ±0.5%, ensuring high accuracy and stability in voltage regulation applications.
3. Wide Operating Range: The device operates over a broad range of input voltages and temperatures, which enhances its applicability across different environments.
4. Low Output Impedance: The TL431ACDT has a low output impedance, typically around 0.2 ohms, which helps improve regulation performance by minimizing the effects of load changes.
5. High Stability: It offers excellent temperature stability, which is crucial for maintaining consistent performance over the operating temperature range.
6. Low Noise: The TL431ACDT generates low output noise, making it suitable for sensitive electronic circuits.
These features make the TL431ACDT suitable for use in precision power supply, voltage reference, and adjustable regulator applications.

Package

The TL431ACDT is a precision programmable voltage reference with a package type of SOT-23-3. This surface-mount package is compact and commonly used in space-constrained applications.

Pinout

The TL431ACDT is a precision programmable voltage reference. It typically comes in a 3-pin configuration. The pin functions are as follows:
1. Reference (Ref): This pin is used for setting up the desired output voltage. A resistor divider is usually connected to this pin to program the output voltage.

2. Anode (A): This pin acts as the ground or negative supply for the device. It conducts current when the device is active and the cathode current flows through this pin to maintain regulation.
3. Cathode (K): This is the output pin where the regulated voltage is measured concerning the anode. The cathode pin sources the regulated current as per the reference set by the Ref pin.
These pins are used together to create a stable, adjustable voltage reference, typically utilized in feedback loops of power supplies and other precision voltage regulation applications.

Manufacturer

The TL431ACDT is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of semiconductor products. These products are used in various applications, including automotive, industrial, personal electronics, and communication equipment. STMicroelectronics is known for its focus on innovation and sustainability in the technology sector.

Application

The TL431ACDT is a programmable precision reference used in various applications. It is commonly used for voltage regulation and as a shunt regulator in power supplies to maintain a stable output voltage. Additionally, it's used in switching power supplies, battery chargers, and voltage monitoring circuits. Its precision makes it ideal for use in precision voltage reference circuits, feedback control loops, and as a comparator in various electronic systems. The TL431ACDT's versatility also allows it to be used in industrial, consumer electronics, and communication equipment.

Equivalent

The TL431ACDT is a programmable precision reference chip. Equivalent products include:
1. LM431 series by Texas Instruments
2. KA431 series by ON Semiconductor
3. TLVH431 series by Texas Instruments
4. LMV431 series by Texas Instruments
5. AS431 series by Diodes Incorporated
These alternatives offer similar functionality with varying specifications, so check datasheets for compatibility with your specific application.

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