TL431BFDT

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Voltage References

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Description

The TL431BFDT is a precision programmable voltage reference from Texas Instruments. It functions as an adjustable shunt regulator, providing a stable reference voltage over a wide range of temperatures and currents. The device is commonly used in applications such as power supplies, battery chargers, and voltage regulation circuits.
Key features of the TL431BFDT include a wide operating voltage range (typically from 2.5V to 36V), low output voltage tolerance, and flexible cathode current capability. It offers an adjustable output voltage, which can be set using external resistors, making it suitable for various applications requiring custom voltage levels. Moreover, it has a temperature stability feature, ensuring consistent performance across different environmental conditions.
The TL431BFDT is packaged in a SOT-23 package, which is compact and suitable for space-constrained designs. Its robust performance and versatility make it a popular choice in both consumer electronics and industrial applications, providing designers with a reliable voltage reference solution.

Equivalent

The TL431BFDT is a precise voltage reference. Equivalent products include:
1. LM431 by Texas Instruments
2. KA431 by ON Semiconductor
3. AZ431 by Diodes Incorporated
4. TLVH431 by Texas Instruments
5. AS431 by BCD Semiconductor
These components offer similar functionality, typically used for voltage regulation and reference in various electronic circuits. Always check datasheets for exact specifications and compatibility.

Features

The TL431BFDT is a precision programmable shunt voltage reference. Key features include:
1. Voltage Adjustability: Offers an adjustable output voltage range of 2.495V to 36V, providing flexibility for various applications.

2. High Precision: It typically has a tight voltage tolerance of ±0.5%, ensuring accurate and stable reference voltage.
3. Temperature Stability: Exhibits excellent temperature coefficient performance, ensuring reliable operation over a wide temperature range.
4. Low Output Impedance: Features low dynamic output impedance, enhancing performance in variable load conditions.
5. Current Capability: Supports a wide cathode current range from 1 mA to 100 mA, allowing it to drive different loads effectively.
6. Package Options: Available in a variety of packages, including surface-mount and through-hole options, facilitating diverse design requirements.
7. Low Noise: Designed for low output noise, which is beneficial in sensitive analog circuits.
These features make the TL431BFDT suitable for use in voltage regulation, switching power supplies, and other precision voltage reference applications.

Pinout

The TL431BFDT is a programmable precision shunt voltage reference. It typically comes in a 3-pin package such as TO-92 or SOT-23. The pins are:
1. Anode: This pin is connected to the negative side of the reference voltage.
2. Cathode: This pin is connected to the positive side and provides the output reference voltage.
3. Reference (Ref): This pin allows for the adjustment of the output voltage. By applying a voltage to this pin, the output can be set to a desired voltage level.
The TL431 series is used for voltage regulation and reference in various applications, providing a stable reference voltage with low temperature drift. It operates over a wide range of cathode currents and is commonly used in power supplies, battery chargers, and other circuits requiring precise voltage regulation.

Manufacturer

The TL431BFDT is manufactured by STMicroelectronics. STMicroelectronics is a multinational electronics and semiconductor manufacturer headquartered in Geneva, Switzerland. The company is known for designing and producing a wide range of semiconductor products, including microcontrollers, sensors, power management devices, and discrete components. STMicroelectronics serves various industries, such as automotive, industrial, personal electronics, and communications equipment, and is recognized for its innovation and commitment to sustainability in the electronics sector.

Application

The TL431BFDT is a precision programmable voltage reference commonly used in various applications, including power supply voltage regulation, adjustable voltage and current sources, and switching power supplies. It is also utilized in battery chargers, overvoltage protection circuits, and error amplifiers in feedback loops. Additionally, the TL431BFDT can be found in communication equipment and instrumentation where precise voltage reference is required. Its ability to maintain a stable reference voltage makes it suitable for improving system accuracy and stability in multiple electronic applications.

Package

The TL431BFDT is a precision programmable voltage reference diode typically available in a surface-mounted package type known as SOT-23-3. This package is compact, making it suitable for space-constrained applications.

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