BU4919G-TR

Supervisors Overview

The BU4919G-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for power supply support applications. It operates within a detection voltage range of 0.9V to 4.8V with a fixed threshold of 1.9V and an accuracy of ±1%. The device features a CMOS output type and requires no manual reset or watchdog timer functionality. It is housed in a compact SSOP-5 package (LSSOP) with dimensions of 2.9mm length. The component supports surface mount installation and functions reliably across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed 1.9V detection threshold and high accuracy.
• Features a low-power CMOS output interface suitable for digital logic integration.
• Operates effectively over an extended industrial temperature range up to 125°C.

Supervisors Applications

• Power supply supervision in electronic circuits
• Voltage monitoring for battery-powered devices
• System reset generation in embedded systems

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as availability may vary by region. Confirm RoHS compliance status directly with the supplier or manufacturer documentation prior to procurement. Ensure that the designated distributor handles the component correctly, as some listings may indicate regional sales restrictions or discontinuation statuses that affect immediate availability.

Supervisors Selection Notes

Select this component for designs requiring a fixed 1.9V under-voltage detection point without adjustable thresholds. It is appropriate for applications needing a simple CMOS output without additional features like watchdog timers or manual resets. Consider the SSOP-5 package constraints for PCB layout and ensure the operating voltage range aligns with the system's power supply specifications.

Supervisors Part Context

This part belongs to the BU4919 series of standard voltage detectors from ROHM Semiconductor. It is categorized under PMIC - Power Management ICs and specifically Supervisory Circuits. The device is often compared with similar voltage detectors in the market, serving as a dedicated solution for monitoring single-input voltage levels in portable and industrial electronics.

Supervisors Replacement Considerations

The BD5219G-1 is listed as a recommended replacement with the same SSOP-5 package. Note differences in output type (Open drain vs CMOS) and precision when substituting.