TL431AIYDT

Noise - 0.1Hz to 10Hz:	--
Base Part Number:	TL431
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Current - Cathode:	700µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Series:	Automotive, AEC-Q100
Temperature Coefficient:	--
Tolerance:	±1%
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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PMIC - Voltage Reference: TL431AIYDT Application Field and Working Principle

Voltage reference is defined as a device or circuit that produces a stable and constant output voltage, which is most commonly used as a reference voltage for other signals and circuits. It is an important feature for fire alarm, voltage regulator and other types of systems. The TL431AIYDT is a widely used three-terminal adjustable shunt regulator, which appeared on the market in the late 1970s and has since become the industry-leading three-terminal adjustable shunt regulator. This article will explain its application field, circuit structure, and working principle.When used for power supplies, the TL431AIYDT voltage reference is often used to provide a reference voltage for other circuits in the same power supply, or in another power supply that requires such a reference voltage. In most cases, the reference voltage is set to either the input voltage of the power supply, as in the case of a regulated power supply, or the output voltage of the power supply, as in the case of an adjustable power supply. This allows the TL431AIYDT to serve as the reference voltage while the power supply maintains its regulation accuracy. Additionally, the TL431AIYDT may also be used in power supply networks, where it can provide the reference voltage to multiple circuits in the same power supply.The TL431AIYDT voltage reference is also used for input voltage compensation in “on-the-fly” feedback systems. This is because the TL431AIYDT maintains a constant output voltage regardless of the input voltage, allowing it to be used in applications where the input voltage may fluctuate. Additionally, the TL431AIYDT is also used as a voltage reference in power controllers and switching regulators. In these circuits, the feedback loop is supplied with a reference voltage from the TL431AIYDT, which ensures that the power supply remains regulated as the input voltage changes.The TL431AIYDT voltage reference is composed of an adjustable three-terminal shunt regulator. The device has three pins, namely a control pin (or voltage-sensing pin), a sense pin and the output pin. These three pins work together to control the output voltage produced by the device. The control pin is used to measure the input voltage, while the sense pin is used to measure the output voltage. The output pin is responsible for regulating the output voltage based on the input voltage.When the control pin detects an input voltage that is higher than the output voltage, it will activate the device, causing it to increase its output voltage. This is done by increasing the resistance of the internal shunt regulator, which reduces the current flowing through the output pin. The device will then remain in this condition until the control pin detects an input voltage that is lower than the output voltage. In this case, the device will reduce its output voltage by decreasing the resistance of the internal shunt regulator, thus increasing the current flowing through the output pin.In summary, the TL431AIYDT voltage reference is an adjustable three-terminal shunt regulator device. It is most commonly used in power supplies, input voltage compensation, and power controllers and switching regulators. The device works by measuring the input voltage and comparing it to the output voltage; if the input voltage is higher, it will increase the output voltage, and if the input voltage is lower, it will decrease the output voltage. This ensures that the power supply remains regulated regardless of the input voltage.

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