The LMV431BIMFX/NOPB from Texas Instruments is a precision shunt regulator designed for low-voltage operations, with an adjustable range from 1.24V to 30V. This component offers a 0.5% initial tolerance, ensuring high precision in voltage regulation. It is temperature compensated across the industrial temperature range, with a coefficient of 39 PPM/°C for the LMV431AI variant, making it reliable under varying environmental conditions.
The regulator has a low operational current of 55 µA and a low output impedance of 0.25 Ω, contributing to its efficiency and fast turn-on response. Its low cost and performance make it an attractive option for applications requiring zener diode-like performance at low voltages. The LMV431BIMFX/NOPB is typically stable with capacitive loads greater than 10 nF and less than 50 pF, offering flexibility in application design.
Voltage References
Voltage references are essential components in electronic circuits, providing a stable reference voltage that other elements in the system can use for accurate operation. They are crucial in applications requiring precise voltage regulation, such as power supplies, analog-to-digital converters, and battery-operated devices. When selecting a voltage reference, engineers consider factors like output voltage accuracy, temperature stability, and power consumption.
Shunt regulators, like the LMV431BIMFX/NOPB, offer an adjustable output voltage, making them versatile for various applications. They work by shunting excess current when the output voltage exceeds a predetermined value, maintaining a constant voltage level. This type of regulator is particularly useful in applications where a stable and precise reference voltage is critical.
The choice of a voltage reference should be guided by the specific requirements of the application, including the desired voltage accuracy, temperature range, and power consumption. For applications requiring low voltage operation and high precision, the LMV431BIMFX/NOPB is an excellent choice due to its wide adjust range, low operational current, and temperature compensation.
In summary, the LMV431BIMFX/NOPB represents a reliable and efficient solution for applications requiring precise voltage regulation at low voltages. Its features and specifications make it suitable for a broad range of applications, from simple voltage monitors to complex error amplifiers and switching regulators.