BU4332F-TR

Overview

The BU4332F-TR is a voltage detector with an adjustable delay time, manufactured by Rohm Semiconductor. It features a typical under-voltage detection voltage of 3.2V and a VDET precision of ±1%. The reset active voltage range spans from 0.7V to 7V, utilizing a CMOS output type. The device incorporates an adjustable delay timer and maintains a low reset active state. Circuit current consumption is specified at 0.40μA (ON) and 0.55μA (OFF) at VDET=4.8V. Hysteresis voltage is defined as VDET x 0.05. The L output current capabilities are 3.3mA (LowVol) and 6.5mA (HighVol). It operates within a temperature range of -40°C to 125°C.

Feature Summary

• Adjustable delay timer functionality for customized reset timing
• CMOS output interface with low power consumption characteristics
• Wide reset active voltage range supporting various supply levels

Applications

• Microprocessor system supervision
• Battery-powered device monitoring
• Portable equipment power management

Procurement Notes

Verify the specific version suffix and package details against the official datasheet before procurement. Confirm that the adjustable delay configuration meets the target application requirements. Check for end-of-life status or recommended alternative part numbers such as BD5232G-1TR if availability is constrained. Ensure compliance with RoHS standards and operating temperature ranges.

Selection Notes

Select this component when an adjustable delay timer is required alongside precise voltage monitoring. Compare circuit current specifications against other options in the series. Consider the CMOS output drive capability relative to load requirements. Evaluate the wide reset active voltage range for compatibility with diverse input supplies.

Part Context

This part belongs to the BU4330/BU4332 series of supervisory circuits designed for low-voltage detection. It shares functional similarities with other members like the BU4330F-TR but offers specific delay adjustment features. The series targets applications requiring reliable power supply monitoring in compact packages.

Replacement Considerations

The BD5232G-1TR is listed as a recommended replacement with the same pinout. Verify package differences, as the BU4332F-TR uses SOP4 while the alternative uses SSOP5. Check output type variations, as the replacement utilizes an open-drain output instead of CMOS.