BU4335G-TR

Overview

The BU4335G-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 supply voltage range of 0.7 V to 7 V. The device provides a typical under-voltage detection threshold of 3.5 V with a precision of ±1%. It utilizes an SSOP-5 package and offers low power consumption, with circuit currents of 0.40 μA (on) and 0.55 μA (off) at Vdet=4.8V. The output type is CMOS, and it lacks manual reset or watchdog timer functions.

Feature Summary

• Adjustable reset delay timer functionality
• CMOS output interface
• Low power consumption design

Applications

• Portable equipment requiring voltage supervision
• Battery-powered systems
• General-purpose voltage monitoring circuits

Procurement Notes

Verify the component status as the BU4335G series may be subject to end-of-life notices. Confirm that the TR suffix indicates tape and reel packaging suitable for automated assembly. Ensure compatibility with existing PCB footprints for the SSOP-5 package. Check for RoHS compliance documentation if required by specific manufacturing standards. Validate that the adjustable delay feature meets the timing requirements of the target application.

Selection Notes

Select this component when a fixed threshold voltage detector with customizable reset timing is required. The adjustable delay allows synchronization with system startup sequences. Consider the low operating current for battery-sensitive applications. Verify that the 3.5 V detection threshold aligns with the minimum operating voltage of the protected load. The CMOS output ensures direct interfacing with digital logic inputs without additional level shifting.

Part Context

The BU4335G-TR belongs to ROHM's BU43xx series of voltage detectors. This series is characterized by low standby current and adjustable delay times. The part is often compared with similar devices like the BD5235G-1, which serves as a recommended replacement or alternative with similar pinouts and specifications. The series supports various detection voltages and packages to accommodate diverse design needs.

Replacement Considerations

The BD5235G-1 is listed as a similar level part with the same pinout and package. It offers comparable specifications including a 3.5 V detection voltage and adjustable delay. Designers should verify electrical parameter equivalence before substitution.

FAQ

Does the BU4335G-TR include a manual reset function?

No, the BU4335G-TR does not support manual reset; it relies on automatic voltage detection.

What is the typical accuracy of the detection voltage?

The detection voltage precision is typically ±1%.