BU4224G-TR

Overview

The BU4224G-TR is a CMOS voltage detector IC from the BU42xx series, featuring an adjustable output delay timer and open-drain output. It provides a typical under-voltage detection voltage of 2.4V with ±1% precision. The reset active state is low, supporting a reset active voltage range of 0.7V to 7V. Operating current is 0.40μA (ON) and 0.55μA (OFF) at VDET=4.8V. Hysteresis is set at VDET x 0.05. It operates within -40°C to 125°C in an SSOP-5 package.

Feature Summary

• Adjustable output delay timer for customized timing control
• High-accuracy voltage detection with built-in hysteresis
• Low current consumption suitable for battery-powered applications

Applications

• Processor supervisor circuits requiring specific reset delays
• Battery-operated devices needing low standby current
• Portable electronics with strict power management requirements

Procurement Notes

Verify supply status as this component may be restricted. Confirm package type and ordering suffix match design requirements. Check RoHS compliance and lead times with authorized distributors. Ensure compatibility with existing PCB footprints before procurement.

Selection Notes

Select based on required detection voltage and delay time settings. Compare operating current specifications against system power budgets. Verify temperature range suitability for the intended environment. Consider pinout compatibility if replacing existing components.

Part Context

Part of ROHM's BU42xx series of CMOS voltage detectors designed for low-voltage monitoring. The series offers various detection voltages and output types to suit diverse application needs. This specific model includes an adjustable delay feature not present in all variants.

Replacement Considerations

BD5224G-1 is listed as a similar level replacement with the same pinout and package. Verify electrical parameters and supply status when substituting.