BU4941G-TR

Supervisors Overview

The BU4941G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring power supply voltages in electronic systems. It operates within a supply voltage range of 0.7 V to 7 V and features a typical under-voltage detection threshold of 4.1 V with ±1% precision. The device utilizes an SSOP-5 surface-mount package and draws a circuit current of approximately 0.55 µA at the detection voltage. It provides a low-active reset output without manual reset or watchdog timer functionality, suitable for applications requiring precise voltage supervision.

Supervisors Feature Summary

• CMOS voltage detection with high accuracy
• Low power consumption design
• Compact SSOP-5 surface mount packaging

Supervisors Applications

• Microprocessor power supply monitoring
• Portable battery-operated equipment
• Multi-output power supply supervision

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notices, as this part may be designated Not Recommended for New Designs (NRND). Ensure ordering suffixes match required packaging specifications before procurement.

Supervisors Selection Notes

Select this component when a fixed 4.1 V threshold is required for system supervision. Compare against replacement options like BD5241G-1 if adjustable delay or open-drain outputs are needed. Verify that the CMOS output type aligns with downstream logic requirements and that the operating temperature range meets environmental constraints.

Supervisors Part Context

This component belongs to the BU49xx series of standard voltage detectors manufactured by ROHM Semiconductor. These devices are engineered for reliable power management in consumer and industrial electronics. The specific model supports legacy designs while newer alternatives may offer enhanced features such as adjustable delays or different output configurations.

Supervisors Replacement Considerations

BD5241G-1TR is a recommended replacement with identical SSOP-5 packaging and similar 4.1 V detection threshold. Note differences in output type (open drain vs CMOS) and reset delay capabilities when substituting.