BU4337G-TR

Overview

The BU4337G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring supply voltages in electronic circuits. It features an adjustable reset delay timer and operates within a detection voltage range of 0.8V to 6V. The typical under-voltage detection threshold is 3.7V with a precision of ±0.9%. Key electrical parameters include a maximum operating voltage of 10V, low circuit current consumption of 0.23μA (on) and 0.27μA (off) at Vdet=4.8V, and a hysteresis voltage. The device utilizes an SSOP-5 package and supports tape-and-reel packaging with a unit quantity of 3000.

Feature Summary

• CMOS technology ensures low power consumption and high reliability for voltage monitoring applications.
• Adjustable reset delay timer allows customization of the output response time relative to voltage changes.
• Open-drain output type provides flexibility for interfacing with various logic families.

Applications

• Monitoring battery-powered devices where low current consumption is critical.
• Resetting microcontrollers or digital logic circuits during power-up or brown-out conditions.
• Protecting memory systems from data corruption due to unstable supply voltages.

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm that the component status aligns with project requirements, as availability may vary. Ensure compatibility with existing PCB footprints and design rules. Check for any recent updates to the RoHS compliance status or manufacturing location. Validate that the supplier provides authentic components with proper traceability documentation.

Selection Notes

Select this component when an adjustable delay timer is required alongside precise voltage detection. Consider the open-drain output capability if level shifting or wired-OR configurations are needed. Evaluate the low standby current benefits for battery-operated designs. Compare the SSOP-5 package size constraints against available board space. Verify that the operating temperature range meets the environmental conditions of the target application.

Part Context

The BU4337G-TR belongs to the BU43xx series of voltage detectors from ROHM Semiconductor. This series is characterized by CMOS construction, offering low current consumption and high accuracy. The part is often compared with similar devices like the BD5237G-1, which shares pinout compatibility but may differ in specific electrical characteristics or recommended design status. Understanding the family context helps in identifying alternative parts or upgrades within the same product line.

Replacement Considerations

The BD5237G-1 is listed as a similar level replacement with the same pinout and package. Verify functional equivalence regarding delay adjustability and output type before substitution. Check if the newer part is recommended for new designs versus the NRND status of the original. Ensure all electrical parameters meet or exceed the original specifications for seamless integration.