BU4936F-TR

Supervisors Overview

The BU4936F-TR is a standard CMOS voltage detector manufactured by ROHM Semiconductor. It features an under-voltage detection threshold of 3.6V with a precision of ±1%. The device operates within a reset active voltage range of 0.7V to 7V and utilizes a CMOS output type with a low reset active state. It consumes 0.40μA in the ON state and 0.55μA in the OFF state at VDET=4.8V, with hysteresis set at VDET x 0.05. Output currents are 3.3mA (LowVol) and 6.5mA (HighVol). It functions between -40°C and 125°C in an SOP4 package.

Supervisors Feature Summary

• CMOS output architecture providing high drive capability
• Ultra-low current consumption for power efficiency
• High accuracy detection voltage with built-in hysteresis

Supervisors Applications

• Portable equipment requiring low voltage monitoring
• Battery-powered systems
• General purpose reset circuits

Supervisors Procurement Notes

Verify supply status as this component may be classified as Last Time Buy or obsolete. Confirm RoHS compliance and packaging details against official distributor documentation before procurement. Ensure design compatibility with the SOP4 package dimensions and thermal characteristics specified in the datasheet.

Supervisors Selection Notes

Select this component when a fixed 3.6V detection threshold is required without delay timer functionality. Compare against BD5236G-1 if open-drain output or adjustable delay is needed. Consider the CMOS output drive strength versus alternative open-drain options for specific load requirements.

Supervisors Part Context

Part of the BU49xx series of standard CMOS reset ICs designed for high accuracy and low current consumption. This series supports various detection voltages from 0.9V to 4.8V. The BU4936F specifically targets applications needing precise voltage supervision in compact packages like SOP4.

Supervisors Replacement Considerations

BD5236G-1 is listed as a recommended replacement with similar specifications but differs in package (SSOP5 vs SOP4) and output type (Open drain vs CMOS).