TL431AILP

Noise - 0.1Hz to 10Hz:	--
Base Part Number:	TL431
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Cathode:	1mA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	30ppm/°C Typical
Tolerance:	±1%
Current - Output:	100mA
Voltage - Output (Max):	36V
Voltage - Output (Min/Fixed):	2.5V
Output Type:	Adjustable
Reference Type:	Shunt
Part Status:	Obsolete
Packaging:	Strip

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Introduction
The TL431AILP is an adjustable three-terminal low-dropout voltage regulator integrated circuit (IC) designed to provide positive and negative adjustable current-limited output voltages. This unit produces an adjustable output voltage with very low dropout current, and can additionally be used as an over-current protection and reference voltage source. It is widely used in different power management and control applications due to its versatility and low cost.Application Field Of TL431AILP
The TL431AILP is most commonly used for buck-down and buck-up converters, power supplies, Li-ion battery chargers, and LED drive applications. In these applications, the adjustable output voltage is typically used to control the power delivered to the load. It is also used for overcurrent protection and fault monitoring, as the circuit can be set to trip at a predetermined current level. The adjustable output voltage also makes the TL431AILP ideal for applications such as load sensing and circuit balancing. Working Principle Of TL431AILP
The TL431AILP works by using a reference voltage (Vref) tuned through a precision woodhead zener structure. This voltage is passed through a current limiting resistor (Rsense) to the control terminal (CTL). When the output terminal (OUT) is higher than the reference voltage, the output current is limited. The output voltage of the TL431AILP is then adjusted using an external resistor divider, when the voltage on the control terminal is equal to Vref, the output voltage can be adjusted within a range of either 3 V or 6 V. Advantages Of TL431AILP
The TL431AILP has a number of advantages over similar voltage regulators. These include improved accuracy, low noise, low harmonic distortion, and good stability over temperature. It also has good transient response and low output impedance which leads to improved output regulation. Additionally, the TL431AILP has very low current consumption, with a quiescent current as low as 5uA, making it suitable for low power applications. Conclusion
The TL431AILP is an adjustable three-terminal low-dropout voltage regulator IC designed to provide positive and negative adjustable current-limited output voltages. It is widely used in power management and control applications due to its versatility, low cost, and low current consumption. The TL431AILP also has a number of advantages such as improved accuracy, low noise, low harmonic distortion, and good stability over temperature.

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