BD5243FVE-TR

Overview

The BD5243FVE-TR is a voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a maximum supply voltage of 10 V and features a threshold voltage of 4.3 V with an accuracy of 1%. The device utilizes a VSOF-5 surface-mount package and provides an open-drain output type. It supports a reset active voltage range from 0.95 V to 10 V and includes an adjustable delay timer function. The component is rated for operation between -40°C and +105°C, with a typical circuit current of 0.85 μA at VDET=4.8V.

Feature Summary

• Provides precise under-voltage detection with adjustable reset delay timing capabilities
• Features low power consumption suitable for battery-operated applications
• Offers flexible reset active voltage range covering standard logic levels

Applications

• Portable electronic devices requiring reliable power supervision
• Embedded systems needing programmable reset delays
• Battery-powered equipment with strict power management requirements

Procurement Notes

Verify the obsolete status and last-time-buy availability through official ROHM channels before procurement planning. Confirm that the VSOF-5 package dimensions match your PCB footprint design. Ensure compatibility with the 4.3 V threshold and open-drain output configuration for your specific circuit application.

Selection Notes

Select this component when a fixed 4.3 V threshold with adjustable delay is required in a compact VSOF-5 package. Consider the 1% accuracy and 0.85 μA operating current for efficiency-critical designs. Verify that the open-drain output interface aligns with the downstream logic requirements of the target system architecture.

Part Context

This part belongs to the BD52 series of voltage detectors, which are designed for general-purpose power management. The BD5243FVE-TR specifically offers a 4.3 V detection threshold with adjustable delay functionality. It serves as a specialized supervisory circuit within ROHM's portfolio for monitoring single-channel power supplies in consumer and industrial electronics.

Replacement Considerations

BD5243G-1TR is listed as a recommended replacement with the same pinout and package.