BD5253FVE-TR

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BD5253FVE-TR is an integrated system supervisor for remotely monitoring the systems to ensure power stability and reliability. It is a Multi-condition Voltage Monitor provided by ROHM\'s Semiconductor division. It is incredibly useful in applications like IoT and industrial control systems, in which power supply stability and safety are paramount. It is designed to watch the system power supply under various conditions and alert the user to any potential power faults.

BD5253FVE-TR offers a flexible system configuration, in which the fault-detection threshold is independently programmable, and the specific voltages it monitors can be customized based on the system usage requirements. It is capable of supervising four different voltage conditions and detecting the power failure within 50µs (< 0.0005s). The SPD (Surge Protection Device) monitors the voltage for over-current events and shuts down the system if necessary.

The BD5253FVE-TR also features a built-in OVP (Over Voltage Protection) system that will provide protection in the event of an over voltage situation. This OVP system helps to reduce stress to components due to large current flow and protects the system from damage. Other features included in this system supervisor are Power Loss Detection, Single Error Correction & Double Error Detection, and Post-Fail-mode.

The BD5253FVE-TR monitors the system supply voltage directly and provides a digital output that can be used to control any system circuits or devices. This output is autonomously driven, thus eliminating the need for any additional logic circuit. It can operate in two main modes: Normal Operation and Active Monitor-mode. In Active Monitor-mode, the BD5253FVE-TR can be triggered to restart when the power supply voltage returns to the normal working range.

BD5253FVE-TR\'s working principle is based on two main components. The first is a comparator circuit, which compares the system supply voltage with the programming voltage. The second is a single-port 16-bit register, which provides the programmable function of the system supervisor. When the supply voltage is within the programmed range, the system supervisor will generate a high logic (H) output. Once the voltage deviation is outside the user-defined range, the supervisor will generate a low logic (L) output.

In addition, BD5253FVE-TR also provides an OR gate from the Standby pin to reduce On-resistance and output current. The OR gate is used to connect the Standby pin with the system supervisor and enhances the application’s flexibility by providing multiple power reset states and/or setting the power reset threshold. This helps in increasing power system stability.

The BD5253FVE-TR is a great tool for ensuring safe and reliable power supply in different industrial and IoT applications. It offers the user a wide range of programming and monitoring options, as well as built-in OVP and SPD protection, making it an ideal system supervisor for any environment or application.

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