TLV431CSN1T1G

Temperature Coefficient:	--
Supplier Device Package:	SOT-23-3
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Cathode:	80µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Noise - 0.1Hz to 10Hz:	--
Series:	--
Tolerance:	±0.2%
Current - Output:	20mA
Voltage - Output (Max):	16V
Voltage - Output (Min/Fixed):	1.24V
Output Type:	Adjustable
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tape & Reel (TR)

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- [Introduction](#introduction)- [Application and Usages](#application-and-usages)- [Working Principle](#working-principle) - [Integrated Circuit](#integrated-circuit) - [Diode Zener](#diode-zener) - [Voltage Divider](#voltage-divider)- [Conclusion](#conclusion)## IntroductionPMIC (Power Management Integrated Circuit) is an important component of various device and systems, it is responsible for the management of power supply, power distribution and power conversion, thus it is widely used in many applications. Voltage Reference is one type of the PMICs, and it is instrumental to achieve an accurate voltage in the electrical circuits. The TLV431CSN1T1G is an adjustable low power shunt regulator which is designed for a wide range of applications requiring accurate control of the output voltage. The following is about the application field and working principle of the TLV431CSN1T1G. ## Application and UsagesThe TLV431CSN1T1G is a low-power shunt regulator with a wide range of applications. It is usually used in various types of electrical circuits and systems that require an accurate and stable output voltage. The device is suitable for a wide variety of applications, such as commercial & industrial control systems, instrumentation systems, PC & mainframe power supplies, power supply regulation & control circuits, audio power headroom regulation, isolated power supplies, and remote sensing. The TLV431CSN1T1G integrates a comparator, a Zener diode, a feedback network and an internal trim capability onto a single chip which is encapsulated in a very small package. The device also exhibits excellent stability over time and temperature which, making it ideal for applications with extreme temperature fluctuations. Additionally, the TLV431CSN1T1G is capable of supplying up to 500\'A of output current which makes it suitable for almost any application.## Working PrincipleThe TLV431CSN1T1G works on the principle of feedback control and regulator circuit techniques. It consists of two main components- an integrated circuit (IC) and a Zener diode. It also consists of a voltage divider, which consists of two resistors to provide reference voltage to the integrated circuit.### Integrated CircuitThe IC part of the TLV431CSN1T1G is the main control element in the circuit. It consists of three pins, the Voltage Out (VOUT), the Ground (GND) and the Feedback (FB). The IC uses the FB pin which is connected to the voltage divider to get the reference voltage. When the output voltage reaches the reference voltage, the IC will stop supplying current and turn off the power switch. This helps to maintain the voltage at the given reference voltage and protects the circuit from over-voltage. ### Diode ZenerThe Zener diode in the TLV431CSN1T1G ensures that the voltage at the FB pin never exceeds the reference voltage set by the voltage divider. This prevents the IC from supplying too much current, which can result in damage to the circuit components. It also helps to reduce power dissipated in the output circuitry by keeping the voltage constant.### Voltage DividerThe voltage divider consists of two resistors, R1 and R2, which provide the reference voltage to the IC. The reference voltage can be adjusted by changing the value of the resistors. The voltage divider also helps to ensure that the voltage on the FB pin is within the safe range for the IC, allowing for more accurate control over the output voltage.## ConclusionThe TLV431CSN1T1G is a low-power shunt regulator with a wide range of applications. Its integrated IC, Zener diode and voltage divider helps it to achieve an accurate output voltage and protects the circuit from over-voltage. The device is suitable for a wide variety of applications and is capable of supplying up to 500\'A of output current, making it ideal for almost any application.

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