BU4926G-TR

Supervisors Overview

The BU4926G-TR is a single-channel voltage detector manufactured by Rohm Semiconductor, designed for power supply support applications. It features a fixed under-voltage detection threshold of 2.6V with a precision of ±1%. The device provides a push-pull/totem pole output and operates within a reset active voltage range of 0.7V to 7V. It is housed in a compact 5-SSOP package (SC-74A/SOT-753) and supports an operating temperature range from -40°C to 125°C. The circuit current is typically 0.40μA when active and 0.55μA when inactive at VDET=4.8V.

Supervisors Feature Summary

• Provides simple reset or power-on reset functionality without manual reset or watchdog timer capabilities.
• Features a CMOS output type with hysteresis voltage defined as VDET multiplied by 0.05.
• Designed for surface mount installation in small form factor packages.

Supervisors Applications

• Microprocessor power voltage monitoring
• Portable battery-powered equipment
• Test and measurement instruments

Supervisors Procurement Notes

Verify the component status carefully before procurement, as this part is classified as Not Recommended for New Designs (NRND). Confirm that the specific SSOP-5 package and 2.6V threshold align with existing design requirements. Ensure compliance with RoHS3 specifications and check for any obsolescence notices from Rohm Semiconductor prior to finalizing orders.

Supervisors Selection Notes

Select this component only for legacy system maintenance or replacement where the 2.6V threshold and push-pull output are strictly required. Consider the BD5226G-1 as a recommended alternative if new designs are permissible, noting differences in output drive current and precision. Evaluate thermal performance within the specified -40°C to 125°C range for the target application environment.

Supervisors Part Context

This component belongs to the BU49xx series of standard voltage detectors from Rohm Semiconductor. It is functionally similar to other parts in the family but distinguished by its specific 2.6V detection voltage and push-pull output configuration. The series is generally targeted at low-power portable devices and general-purpose power monitoring tasks.

Supervisors Replacement Considerations

The BD5226G-1 is listed as a recommended replacement with the same SSOP-5 package. Note that the BD5226G-1 features an open-drain output rather than push-pull, which may require external pull-up resistors and affects interface compatibility.