ZR40402R50

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PMIC - Voltage Reference

ZR40402R50 is a high performance shunt voltage regulator with over-current protection. The device has a wide operating voltage range from -120 V to +14 V, allowing it to be used in a variety of applications from industrial, automotive, computing and telecom equipment to battery powered or high-end appliance products. The device has excellent performance characteristics that make it suitable for precision control, low power consumption and noise immunity.

Application Field

The ZR40402R50 is a highly reliable component that enables designers to easily construct output voltages of various levels, enabling various power-management applications. The flexibility of the ZR40402R50 makes it an excellent choice for applications that require a wide range of adjustable output voltages ranging from 0.8V to 14V, such as automotive, computing, telecom, industrial equipment and medical products.

The robustness and reliability of the ZR40402R50 makes it ideal for rugged industrial systems, automotive or aviation applications such as control circuit monitoring or airbag protection. Moreover, the device quickly stabilizes and provides a stable output voltage even in extreme situations. This is beneficial for monitoring the operating conditions of redundant systems. For high-current applications, the ZR40402R50 enables precise voltage control and over-current protection.

Working Principle

ZR40402R50 is a monolithic current-driven device that uses an external shunt resistor to proportionally turn on and off an output device. This in turn controls the output voltage. As the input voltage drops, the output voltage follows in order to maintain the desired level.The device uses current-driven outputs, whereby higher current allows increasing the output voltage up to 14 volts.

The device has two operating modes, a high power mode and a low power mode. In the high power mode, it is capable of delivering more than 1A of current and switches faster to maximize efficiency and minimize harmonic distortion. In the low power mode, it is ideal for applications where noise without extra power consumption needs to be minimized.

The device utilizes an advanced current-drive feedback system, which helps achieve precise adjustment of the output voltage when an external resistors change the current levels. It has a temperature coefficient of negligible 0.17%/‰C and voltage tolerance up to 0.25%. Its impedance is comparably low, at only 0.15 Ohms. The addition of internal over-current protection allows safe and reliable monitoring of the devices output current.

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