BU4235G-TR

Overview

The BU4235G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages. It features an adjustable reset delay timer and operates within a reset active voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is set at 3.5 V with a precision of ±1%. The device utilizes an open-drain output type and maintains low circuit current consumption, specified at 0.40 μA in the active state and 0.55 μA in the off state when Vdet is 4.8 V. It is housed in an SSOP-5 package.

Feature Summary

• Adjustable reset delay timer functionality
• Open-drain output configuration
• Low power consumption design

Applications

• Power supply supervision
• Microprocessor reset circuits
• Battery-powered system monitoring

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging if required by assembly equipment. Confirm the component status as Not Recommended for New Designs (NRND) to ensure long-term availability aligns with product lifecycle requirements. Cross-reference the exact part number against official ROHM documentation to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when a fixed 3.5 V detection threshold is appropriate for the target application. The adjustable delay feature allows customization of reset timing without external components. Ensure the operating voltage range of 0.7 V to 7 V covers the system's minimum and maximum supply levels. Consider the NRND status for new projects requiring long-term supply stability.

Part Context

This part belongs to the BU42xxG series of voltage detectors from ROHM. These devices are characterized by CMOS technology for low current consumption. The BU4235G variant specifically targets applications requiring a 3.5 V threshold. The -TR suffix denotes the reel packaging format used for automated surface-mount assembly processes.

Replacement Considerations

The BD5235G-1 is listed as a similar level replacement with the same pinout and package. Verify functional equivalence and parameter alignment before substitution.