BD5344FVE-TR

Overview

The BD5344FVE-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring single-input power supply lines. It features a fixed threshold voltage of 4.4 V with a precision of ±1%. The device utilizes a CMOS output type and supports an adjustable reset delay timer to prevent false triggering during power-up transients. It operates within a supply voltage range of 0.95 V to 10 V and maintains functionality across an extended temperature range of -40°C to +105°C. The component is housed in a VSOF-5 surface-mount package and draws a typical circuit current of 0.85 μA when active.

Feature Summary

• CMOS output interface for direct logic compatibility
• Adjustable reset delay timer configuration via external resistor
• High accuracy threshold detection with ±1% precision
• Low power consumption suitable for battery-operated systems

Applications

• Microprocessor system reset circuits
• Battery-powered device power management
• Portable electronic equipment supervision
• Industrial control board voltage monitoring

Procurement Notes

Verify the obsolete status and last-time-buy availability through official ROHM channels before finalizing procurement plans. Confirm that the VSOF-5 package dimensions and pinout match the target PCB footprint. Ensure compliance with RoHS directives as specified in the manufacturer documentation. Review the datasheet for specific handling and storage requirements associated with the end-of-life lifecycle stage.

Selection Notes

Select this component when a fixed 4.4 V threshold with high precision is required for single-channel monitoring. The adjustable delay feature allows customization of startup timing without additional complex circuitry. Consider the low standby current for energy-efficient designs. Verify that the CMOS output drive capability meets the load requirements of the downstream logic gates or microcontroller reset pins.

Part Context

This part belongs to the BD52(53)xxFVE series of standard voltage detectors. It shares the VSOF-5 package form factor with other variants in the family but differs in threshold voltage settings. The BD5344FVE-TR is specifically engineered for general-purpose supervisory applications requiring precise voltage tracking and configurable reset timing.

Replacement Considerations

The BD5244G-1 is listed as a similar level replacement with the same pinout. Note that the BD5244G-1 uses an SSOP-5 package instead of VSOF-5, requiring mechanical adaptation. Both parts share the 4.4 V threshold and CMOS output characteristics.