BU4232FVE-TR

Overview

The BU4232FVE-TR is a CMOS voltage detector IC featuring an adjustable output delay timer. It provides a typical under-voltage detection threshold of 3.2V with ±1% precision. The device operates within a reset active voltage range of 0.7V to 7V and utilizes an open-drain output type with low-active reset state. Circuit current consumption is specified at 0.40μA (ON) and 0.55μA (OFF) at VDET=4.8V. Hysteresis is set at VDET x 0.05. The component supports an operating temperature range from -40°C to 125°C and is housed in a VSOF5 package measuring 1.6x1.6mm.

Feature Summary

• Integrates an adjustable delay timer circuit for customizable reset timing
• Delivers high-accuracy voltage detection with ±1% precision
• Features low power consumption suitable for battery-operated systems
• Provides open-drain output compatible with various logic levels

Applications

• Microprocessor system reset circuits
• Battery-powered device supervision
• Portable electronic equipment monitoring
• General-purpose voltage supervision

Procurement Notes

Verify the specific ordering suffix, as the base part number may correspond to different packaging options such as tape and reel quantities. Confirm the exact detection voltage tolerance and package dimensions against the latest manufacturer datasheet before integration. Ensure compliance with RoHS standards and check for any end-of-life notices or last-time-buy statuses associated with this specific revision.

Selection Notes

Select this component when precise voltage monitoring with configurable delay is required. The open-drain output allows flexible interfacing with pull-up resistors. Consider the thermal performance within the -40°C to 125°C range for harsh environments. Compare current consumption metrics against alternative supervisors if power efficiency is critical. Verify that the 3.2V threshold aligns with the target system's minimum operating voltage requirements.

Part Context

This part belongs to the BU42xx series of CMOS voltage detectors manufactured by ROHM Semiconductor. The series is characterized by built-in delay circuits and low current consumption. It offers multiple detection voltage options ranging from 0.9V to 4.8V in 0.1V increments. The family supports both open-drain and CMOS outputs, providing design flexibility for various supervisory applications.

Replacement Considerations

The BD5232G-1 is identified as a recommended replacement with the same pinout. Note that the BD5232G-1 uses an SSOP5 package compared to the VSOF5 package of the BU4232FVE. Verify mechanical fit and electrical compatibility, including the slightly different reset active voltage range and hysteresis characteristics.