BU4234G-TR

Overview

The BU4234G-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 detection voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is 3.4 V with a precision of ±1%. The device utilizes an open-drain output type and maintains a low circuit current of 0.40 μA in the active state (at Vdet=4.8V) and 0.55 μA in the off state. It is housed in an SSOP-5 package and supports RoHS compliance.

Feature Summary

• Adjustable reset delay timer functionality allows customization of response timing relative to voltage drops.
• Open-drain output structure provides flexibility for interfacing with various logic families.
• Low power consumption characteristics support battery-operated applications through minimal operating current.

Applications

• Portable electronic devices requiring reliable power supervision
• Battery-powered systems needing under-voltage protection
• General-purpose microcontroller reset circuits

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when ordering. Confirm that the component status is noted as not recommended for new designs, which may impact long-term availability. Ensure compatibility with existing design constraints before procurement due to potential obsolescence risks associated with this lifecycle stage.

Selection Notes

Select this component when an adjustable delay feature is required alongside a fixed 3.4 V detection threshold. Consider the SSOP-5 package size for space-constrained layouts. Evaluate the open-drain output requirements against system interface needs. Compare performance metrics such as hysteresis and current consumption against alternative supervisory circuits if stricter power limits apply.

Part Context

This part belongs to the BU42 series of voltage detectors from ROHM Semiconductor. It shares pinout compatibility with similar models like the BD5234G-1, facilitating potential design swaps within the same family. The series is characterized by CMOS technology offering low power operation and precise voltage monitoring capabilities for modern electronic systems.

Replacement Considerations

The BD5234G-1 is listed as a similar level replacement with the same pinout and package. Verify electrical parameter equivalence, particularly the detection voltage and delay adjustability, before substituting. Check current supply status for both parts to ensure continuity of production.