BD4935FVE-TR

Overview

The BD4935FVE-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel supply voltages. It features a typical under-voltage detection threshold of 3.5V with a precision of ±1%. The device operates within a reset active voltage range of 0.95V to 10V and utilizes a CMOS output type. It does not include manual reset, watchdog timer, or adjustable delay functions. The circuit current is specified at 0.60μA (on) and 0.85μA (off) at VS=4.8V. Hysteresis is defined as Vs x 0.05 or Vdet x 0.05. It is housed in a VSOF-5 package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• CMOS output structure for reliable logic interfacing
• High accuracy voltage detection with ±1% precision
• Ultra-low power consumption suitable for battery-operated systems
• Integrated hysteresis to prevent output oscillation during noise events

Applications

• Portable electronic devices requiring low standby current
• Battery-powered equipment needing under-voltage protection
• General-purpose supervisory circuits in consumer electronics
• Embedded systems requiring stable reset signals during power transitions

Procurement Notes

Verify the specific suffix and tape-and-reel quantity against official ROHM documentation before ordering. Confirm that the VSOF-5 package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Check for any recent lifecycle changes or end-of-life notices directly from the manufacturer. Validate RoHS compliance status through the latest datasheet revision.

Selection Notes

Select this component when a fixed 3.5V threshold is required without additional features like watchdog timers or manual resets. Consider the CMOS output drive capability for your load requirements. Evaluate the ultra-low current consumption against system power budgets. Compare the hysteresis characteristics with other detectors if noise immunity is critical. Verify compatibility with the target voltage range of 0.95V to 10V.

Part Context

This part belongs to the BD49 series of standard voltage detectors from ROHM Semiconductor. It is designed for applications requiring simple, high-accuracy supervision of a single voltage rail. The series typically offers various threshold options to accommodate different logic families and power rails. The VSOF-5 package provides a compact solution for space-constrained designs.

Replacement Considerations

BD5235G-1 is listed as a similar specification replacement option.