BU4226FVE-TR

Overview

The BU4226FVE-TR is a CMOS low voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features an adjustable reset delay timer and operates within a supply voltage range of 0.9 V to 7 V. The device provides a 2.6 V threshold detection accuracy of ±1% with hysteresis set at VDET x 0.05. It utilizes an open-drain output active low and consumes a typical operating current of 550 nA. The component is housed in a compact VSOF-5 package and supports an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Adjustable reset delay timer allows customization of response timing via external components
• Open-drain output configuration ensures compatibility with various logic families
• Low power consumption design suitable for battery-operated applications
• High precision voltage detection with built-in hysteresis to prevent output oscillation

Applications

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

Procurement Notes

Verify the specific suffix and package variant against the official datasheet before procurement, as availability may vary by region. Confirm RoHS compliance status and check for end-of-life notifications or last-time-buy statuses directly with the manufacturer or authorized distributors. Ensure the ordering part number matches the required reel or cut-tape quantity specifications.

Selection Notes

Select this component when a single-channel voltage supervisor with adjustable delay is required. The 2.6 V threshold suits systems where the monitored rail drops below this level during brown-out conditions. The open-drain output requires an external pull-up resistor. Verify that the external capacitor used for delay adjustment falls within the recommended resistance range specified in the electrical characteristics table.

Part Context

This part belongs to the BU42(43)xxFVE series of voltage detectors from ROHM Semiconductor. The series offers various fixed threshold voltages ranging from 2.0 V to 4.8 V, all sharing similar functional characteristics including adjustable delays and low standby currents. The FVE designation indicates the specific VSOF-5 surface-mount package type used for space-constrained designs.

Replacement Considerations

The BD5226G-1 is documented as a replacement with the same pinout. Verify package differences (VSOF-5 vs SSOP-5) and slight variations in reset active voltage ranges and output drive capabilities before substitution.