BU4217FVE-TR

Overview

The BU4217FVE-TR is a CMOS voltage detector IC from ROHM Semiconductor featuring an adjustable output delay timer. It operates within a supply voltage range of 0.7V to 7V and provides a typical under-voltage detection threshold of 1.7V with ±1% precision. The device utilizes an open-drain output type with a low-active reset state. It supports a wide operating temperature range from -40°C to 125°C and consumes low current, specified at 0.40μA (ON) and 0.55μA (OFF) at VDET=4.8V. The component is housed in a compact VSOF5 package measuring 1.6x1.6mm.

Feature Summary

• Built-in adjustable delay circuit for customizable output timing
• High-accuracy voltage detection with low current consumption
• Compact surface-mount packaging suitable for space-constrained designs

Applications

• Portable electronic devices requiring low power supervision
• Battery-powered systems needing precise voltage monitoring
• General-purpose microcontroller reset circuits

Procurement Notes

Verify the specific suffix FVE corresponds to the VSOF5 package and check RoHS compliance status. Confirm availability as this part may be subject to end-of-life restrictions or last-time-buy notices depending on the distributor. Ensure the ordering part number matches the required tape-and-reel quantity specifications.

Selection Notes

Select this component when an adjustable delay timer is required alongside high-precision voltage detection. The VSOF5 package offers a smaller footprint compared to standard SSOP options. Consider the open-drain output capability for interfacing with various logic levels within the 0.7V to 7V operating range.

Part Context

This component belongs to the BU42xx series of CMOS voltage detectors designed for low-voltage applications. The series allows selection based on detection voltages ranging from 0.9V to 4.8V in 0.1V increments. The BU4217 variant specifically targets the 1.7V detection threshold application.

Replacement Considerations

BD5217G-1 is listed as a recommended replacement with the same pinout but uses an SSOP5 package instead of VSOF5.