BU4838F-TR

Supervisors Overview

The BU4838F-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single power supply lines. It operates within a supply voltage range of 0.7 V to 7 V and features a typical under-voltage detection threshold of 3.8 V with ±1% precision. The device utilizes an open-drain output type and lacks manual reset, watchdog timer, or chip enable functions. It is housed in a SOP-4 package and supports surface mount installation. The component functions across an extended temperature range from -40°C to +125°C, consuming a typical operating current of 400 nA.

Supervisors Feature Summary

• Provides precise voltage supervision with high accuracy for reliable system reset generation
• Features low power consumption suitable for battery-operated applications
• Utilizes compact surface-mount packaging for space-constrained designs

Supervisors Applications

• Portable electronic devices requiring voltage monitoring
• Battery-powered systems needing under-voltage protection
• General-purpose supervisory circuits in consumer electronics

Supervisors Procurement Notes

Verify the obsolete status of this component before procurement, as it is listed as discontinued. Confirm availability through authorized distributors or secondary markets. Ensure that the SOP-4 package and electrical specifications meet your design requirements. Check for RoHS compliance details if environmental regulations apply to your project. Validate lead times and authenticity due to the end-of-life status.

Supervisors Selection Notes

Select this component only if the specific 3.8 V threshold and SOP-4 package are compatible with your design. Consider the discontinued status when planning long-term production. Evaluate alternative voltage detectors with similar thresholds and packages if supply stability is critical. Verify that the open-drain output interface matches your microcontroller or logic input requirements.

Supervisors Part Context

The BU4838F-TR belongs to the BU4838 series of standard voltage detectors from ROHM Semiconductor. This series includes variants with different detection voltages and packages. The BU4838G-TR is a similar part in the same family but uses an SSOP-5 package. These components are designed for general-purpose power supply monitoring in various electronic applications.

Supervisors Replacement Considerations

The BD5238G-1 is listed as a replacement part with similar specifications. It offers comparable detection voltage and functionality but may differ in package type or minor electrical characteristics. Verify compatibility with your existing design before substitution.