BD5247FVE-TR

Overview

The BD5247FVE-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring supply voltages in electronic circuits. It features an adjustable delay timer and operates within a reset active voltage range of 0.95 to 10 V. The device provides an open-drain output with a typical under-voltage detection threshold of 4.7 V and a precision of ±1%. It consumes a circuit current of 0.85 μA at VDET=4.8V and includes hysteresis voltage defined as VDET x 0.05. The component is housed in a VSOF5 package measuring 1.6x1.6 mm with a thickness of 0.6 mm, supporting an operating temperature range from -40°C to 105°C.

Feature Summary

• Features an adjustable delay timer for customizable reset timing.
• Provides open-drain output capability for flexible interfacing.
• Includes internal hysteresis to prevent output oscillation during voltage transitions.

Applications

• Microprocessor system reset circuits
• Portable equipment power management
• Battery-operated device supervision

Procurement Notes

Verify the current supply status before procurement, as this part may be subject to end-of-life restrictions or last-time-buy conditions. Confirm that the VSOF5 package dimensions and pinout align with existing PCB footprints. Ensure compatibility with the required operating temperature range and voltage thresholds for the specific application environment.

Selection Notes

Select this component when an adjustable delay timer is required alongside precise voltage monitoring. Compare the 0.85 μA circuit current against lower-power alternatives if battery life is critical. Verify that the open-drain output configuration meets the interface requirements of the downstream logic, noting the lack of manual reset functionality.

Part Context

This part belongs to the BD52xx series of voltage detectors from ROHM Semiconductor. It shares functional similarities with other models in the family but is distinguished by its specific detection voltage and adjustable delay characteristics. The VSOF5 package offers a compact form factor suitable for space-constrained designs.

Replacement Considerations

The BD5247G-1 is listed as a recommended replacement with the same pinout. Note that the BD5247G-1 uses an SSOP5 package instead of VSOF5 and has different electrical specifications, including a lower circuit current and a narrower reset active voltage range.