TL431AIDMR2

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TL431AIDMR2 is a low-cost, three-terminal regulators specifically designed as a precision voltage reference and temperature compensated series reference combined with a shunt regulator. It is widely used as a voltage reference device in industrial, computer, consumer and other markets, as well as automated test equipment.

The TL431AIDMR2 is a three-terminal device with the following features:

• High precision: It provides excellent accuracy and line regulation, low dynamic output impedance and fast load transient response. It can deliver a precise output voltage at a fraction of the cost of a discrete design.
• Low operating current: The input current of TL431AIDMR2 is minimized by the use of low power CMOS technology.
• High package availability: It is available in a variety of packages, including SOT-23, TO-92 and SOIC2. It is also available in a small surface-mount package, making it ideal for space-restricted applications.
• Wide operating temperature range: The TL431AIDMR2 can operate over a temperature range of -40°C to +125°C.

Application field of TL431AIDMR2

TL431AIDMR2 is used in a wide variety of portable, industrial and consumer electronics. It is popular in battery-powered systems. Due to its high precision, it is ideal for precision voltage regulation in voltage reference circuits, current-limited charging systems, bridge controllers and battery monitors, as well as overvoltage protection in industrial applications.

It also finds application in temperature-controlled systems. As the output voltage of the TL431AIDMR2 is temperature compensated, it can be used for temperature compensation purposes in battery-charging and other applications. It can be used for precise control of thermistors, thermoelectric modules and silicon temperature sensors.

Working principle of TL431AIDMR2

The TL431AIDMR2 is a three-terminal device that operates as a precision voltage reference or shunt regulator. It consists of two common emitter transistors, a Zener diode and a current-sense resistor. The current-sense resistor sense the difference between the output voltage and the reference voltage set by the capacitor, and adjusts the output voltage accordingly. The device can be used as a shunt regulator to provide voltage regulation for charging and power supply applications, or as a precision voltage reference to set a fixed reference voltage.

TL431AIDMR2 has two operating modes; constant voltage and constant current. In constant voltage mode, the TL431AIDMR2 operates as a shunt regulator and maintains a constant output voltage. In constant current mode, the output current is held constant. This is useful in applications such as battery charging where the current must be held constant while the voltage changes.

The TL431AIDMR2s are available in a variety of packages and are suitable for a range of applications. From precision voltage references for industrial and computer applications to battery charging for portable devices, the TL431AIDMR2 provides reliable, high-precision performance at a fraction of the cost of a discrete design.

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