TL431BCDBVTE4

Noise - 0.1Hz to 10Hz:	--
Base Part Number:	TL431B
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Current - Cathode:	600µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	--
Tolerance:	±0.5%
Current - Output:	100mA
Voltage - Output (Max):	36V
Voltage - Output (Min/Fixed):	2.495V
Output Type:	Adjustable
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TL431BCDBVTE4 application field and working principleThe purpose of using TL431BCDBVTE4 is to provide accurate and reliable reference voltage, which is commonly used in DC-DC converters, regulators, and limiter circuits. The TL431BCDBVTE4 is part of the family of linear voltage regulators and belongs to the category of programmable shunt regulators, also known as reflux regulators. It is an adjustable three-terminal regulator IC specifically designed for use in voltage regulation, and has the characteristics of low temperature coefficient and very shear resistance.The TL431BCDBVTE4 is provided in a TO-92 package and provides a highly accurate, low drift reference voltage at its output using a basic three-terminal design. It features a wide voltage range output and a low-current shutdown mode, along with protection against input voltage and output current overloads. The output voltage of the device is programmable through external resistors and can be set to any value between 2.5 V and 36 V. The TL431BCDBVTE4 operates as an adjustable three-terminal shunt regulator and works in conjunction with an external N-channel MOSFET. The device controls the conduction of the MOSFET by sensing the difference between its controlled output voltage of the regulator and its reference voltage. When the difference exceeds a pre-determined level, the current of the pass transistor is increased, and the output voltage lowers until the difference is equalized.The TL431BCDBVTE4 consists of three main operating parts: a current limiter, an error amplifier and a reference voltage source. The current limiter limits output current and provides protection against overloads. The error amplifier compares the output voltage with the reference voltage and adjusts the conduction of the MOSFET, thus maintaining the output voltage at the desired level. Finally, the reference voltage source provides the voltage reference level required for the operation of the error amplifier.In addition to being used in DC-DC converters and other linear voltage regulator circuits, the TL431BCDBVTE4 is also widely used in current limiter circuits, circuit protection devices, bipolar logic circuits, PEAK detectors and many other applications. The device can be used in various temperature ranges from -40°C to +125°C, making it suitable for use in a wide range of industrial and consumer applications as well.In conclusion, the TL431BCDBVTE4 is a useful and versatile device widely used for a variety of applications, allowing for adjustable and accurate reference voltage generation. Furthermore, it offers enhanced reliability and protection for applications where accurate voltage regulation is required.

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