X40020V14I-BT1

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The X40020V14I-BT1, classified as a PMIC (Power Management Integrated Circuit) Supervisors, is a single-track supply supervisor which provides software-programmable overvoltage and undervoltage protection to power supplies of systems. It monitors the voltage level of a power source and switches the power off when the voltage gets too high or too low. It is commonly used for automotive and industrial applications.

The X40020V14I-BT1 is designed to monitor the battery voltage and protect it from both over-voltage and under-voltage conditions. It features a highly accurate overvoltage threshold at 14.28V (VOV) and a programmable undervoltage threshold at 11.6V (VUV). These thresholds can be adjusted using a simple voltage divider circuit.

The supervisor can be used to monitor battery voltages that are typically between 7V and 15.3V. Other battery voltages can be monitored by switching in a simple resistor divider arrangement. The supervisor can survive peak voltages up to 24V, meaning that it is suitable for 12V applications.

In operation, the X40020V14I-BT1 continuously monitors the battery voltage and if any of the programmable thresholds are exceeded, it will activate a N-channel MOSFET switch to shut down the system. It also features an open drain output pin that allows for a turn-on reset-signal from an external device. This reset signal can be used to turn on the system after the supervisor has been shut off.

The X40020V14I-BT1 is packaged in a small 3x3x0.9mm QFN package, making it highly suitable for space constrained applications. The device is RoHS compliant and is capable of operating over a temperature range of -40°C to +85°C.

Many of today’s applications require reliable power source protection and the X40020V14I-BT1 provides an ideal solution. With its small form factor and ease of programming, the supervisor allows engineers to quickly and reliably protect their power supplies from dangerous over and undervoltage conditions.

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