BU4935G-TR

Supervisors Overview

The BU4935G-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 0.7 V to 7 V and features a typical threshold voltage of 3.5 V with an overvoltage threshold of 3.535 V. The device offers high accuracy with a precision of ±1% and consumes a low static current of 500 nA. It is housed in an SSOP-5 surface-mount package and functions across an extended temperature range from -40°C to +125°C. The component lacks manual reset, watchdog timer, or battery backup switch capabilities, providing a direct CMOS output for supervisory applications.

Supervisors Feature Summary

• CMOS output interface for direct logic compatibility
• High detection accuracy with ±1% precision tolerance
• Low static current consumption for energy efficiency
• Extended industrial temperature operation capability

Supervisors Applications

• Microprocessor power supply monitoring
• Portable battery-powered equipment supervision
• Desktop and laptop computer system resets
• Test and measurement instrument voltage tracking

Supervisors Procurement Notes

Verify the specific suffix TR indicates reel packaging when sourcing. Confirm the NRND status aligns with long-term availability requirements for your design lifecycle. Ensure the SSOP-5 footprint matches your PCB layout constraints. Cross-reference the 3.5 V threshold against your system's minimum operating voltage to guarantee reliable reset generation under all load conditions.

Supervisors Selection Notes

Choose this component when a fixed 3.5 V threshold is required for single-input voltage supervision. The CMOS output type suits digital logic interfaces without additional pull-up resistors. Consider the low static current for battery-operated designs where power conservation is critical. Verify that the absence of a watchdog timer meets the safety requirements of the target application.

Supervisors Part Context

This part belongs to the BU49xx series of standard voltage detectors from ROHM Semiconductor. It serves as a dedicated supervisory circuit for ensuring stable operation of microprocessors and memory devices. The series is characterized by low power consumption and compact packaging options suitable for space-constrained portable electronics and general-purpose industrial control systems.

Supervisors Replacement Considerations

The BD5235G-1TR is listed as a recommended replacement with similar specifications. Note that the substitute uses an open-drain output instead of CMOS and has a slightly different operating voltage range. Verify pinout compatibility and electrical parameter alignment before substitution.