BD5343FVE-TR

Overview

The BD5343FVE-TR is a voltage detector with an adjustable delay time, manufactured by ROHM Semiconductor. It features a typical under-voltage detection voltage of 4.3V with ±1% precision. The reset active voltage range spans from 0.95V to 10V, utilizing a CMOS output type with a low-active reset state. The device incorporates an adjustable delay timer and lacks manual reset or watchdog timer functions. It is not designated for automotive use. The circuit current is 0.85μA when ON (at VDET=4.8V) and 0.85μA when OFF. Hysteresis voltage is defined as VDET x 0.05. The L output current is 1.2mA at low voltage and 5mA at high voltage. The delay circuit resistance is 9.0MΩ. Operating temperature ranges from -40°C to 105°C. The package is VSOF-5.

Feature Summary

• Adjustable delay time functionality via external components
• High precision voltage detection with CMOS output
• Low power consumption design suitable for battery-operated systems

Applications

• Portable electronic devices requiring precise power monitoring
• Battery-powered equipment needing reliable reset signals
• General-purpose supervisory circuits in consumer electronics

Procurement Notes

Verify the specific ordering suffix and packaging configuration against official ROHM documentation before procurement. Confirm that the VSOF-5 package dimensions and pinout match your PCB layout requirements. Ensure compliance with RoHS directives if applicable to your manufacturing process. Check for any end-of-life notices or recommended replacement parts such as the BD5243G-1 series if availability is a concern. Validate the operating temperature range suitability for your specific application environment.

Selection Notes

Select this component when an adjustable delay timer is required alongside high-precision voltage detection. The CMOS output provides strong drive capability compared to open-drain alternatives. Consider the 0.85μA current consumption for low-power applications. The wide reset active voltage range offers flexibility in system design. Ensure the 9.0MΩ delay circuit resistance aligns with your timing capacitor selection for the desired delay period.

Part Context

This part belongs to the BD53xx series of voltage detectors from ROHM Semiconductor. It is designed for general-purpose industrial and commercial applications rather than automotive environments. The VSOF-5 package offers a compact footprint for space-constrained designs. The adjustable delay feature distinguishes it from fixed-delay counterparts in the same family.

Replacement Considerations

The BD5243G-1 is listed as a similar level replacement with the same pinout and package. Note differences in output type (open drain vs. CMOS) and current consumption when substituting.