BU4819G-TR

Supervisors Overview

The BU4819G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages in electronic circuits. It operates within a supply voltage range of 0.9V to 7V and features an under-voltage detection threshold of 1.9V with a precision of ±1%. The device provides an open-drain output that activates at low levels, supporting a reset active voltage range from 0.7V to 7V. It consumes minimal current, typically 0.40μA when ON and 0.55μA when OFF at VDET=4.8V. The component is housed in an SSOP5 package (2.9x2.8mm) and functions reliably across a temperature range of -40°C to 125°C.

Supervisors Feature Summary

• Provides precise under-voltage detection with high accuracy and low hysteresis
• Features ultra-low power consumption suitable for battery-operated devices
• Delivers open-drain output compatible with various logic families

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Microprocessor and microcontroller system supervision
• Battery-powered equipment needing reliable voltage monitoring

Supervisors Procurement Notes

Verify the specific ordering suffix and packaging configuration before procurement, as availability may vary by region. Confirm compliance with RoHS standards and ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Supervisors Selection Notes

Select this component for applications requiring a fixed 1.9V detection threshold with high precision. Consider the SSOP5 package dimensions and operating temperature range when designing PCB layouts. Ensure the open-drain output interface aligns with the downstream circuit requirements.

Supervisors Part Context

This part belongs to the BU48 series of standard voltage detectors from ROHM Semiconductor. It is engineered for compact designs with strict power constraints. The series emphasizes reliability and accuracy in supervisory roles within modern electronic systems.

Supervisors Replacement Considerations

The BD5219G-1 is documented as a replacement with the same package and similar specifications. Verify compatibility regarding reset delay timers and output current capabilities during substitution.