BU4317F-TR

Overview

The BU4317F-TR is a voltage detector with an adjustable delay time, currently in the Last Time Buy phase. It features a typical under-voltage detection voltage of 1.7V with ±1% precision. The reset active voltage range spans from 0.7V to 7V, utilizing a CMOS output type with a low-active reset state. Circuit current consumption is specified at 0.40μA (ON) and 0.55μA (OFF) at VDET=4.8V. Hysteresis is defined as VDET x 0.05. The device operates within a temperature range of -40°C to 125°C and is housed in an SOP4 package.

Feature Summary

• Adjustable reset delay timer functionality for customized timing control
• CMOS output interface compatible with standard digital logic levels
• Wide operating supply voltage range supporting diverse system requirements

Applications

• Portable electronic devices requiring low power supervision
• Battery-powered systems needing reliable under-voltage monitoring
• General purpose microprocessor reset circuits

Procurement Notes

This component is designated as Last Time Buy, indicating that production is ending and no future replenishment will occur. Verify availability through authorized distributors immediately. Ensure compliance with RoHS standards as confirmed in official documentation. Check datasheet revisions for any final updates before integration into new designs.

Selection Notes

Select this part when an adjustable delay timer is required alongside CMOS output compatibility. Consider the 1.7V detection threshold and wide input voltage range. Evaluate the SOP4 package size against board space constraints. Confirm that the adjustable delay feature meets specific timing requirements compared to fixed-delay alternatives.

Part Context

The BU4317F belongs to ROHM's voltage detector family designed for supervisory applications. It provides precise monitoring with adjustable timing features. The series supports various detection voltages and output types to suit different embedded system needs. This specific model emphasizes flexibility through its configurable delay mechanism.

Replacement Considerations

BD5217G-1 is listed as a recommended replacement with similar specifications and same pinout configuration. Verify electrical parameter alignment and package compatibility during transition planning.