BU45K432G-TL

Supervisors Overview

The BU45K432G-TL is a fixed delay time voltage detector manufactured by ROHM Semiconductor. It features an under-voltage detection threshold of 4.3V with a precision of ±1%. The device operates within a reset active voltage range of 0.6V to 6V and utilizes an open drain output type. It incorporates a fixed reset delay timer of 200ms and maintains a low circuit current consumption of 2.3μA in the ON state and 2.8μA in the OFF state. The hysteresis voltage is defined as Vdet multiplied by 0.05.

Supervisors Feature Summary

• Fixed delay time voltage detection for stable power supply monitoring
• Open drain output configuration for flexible logic interfacing
• Low quiescent current consumption suitable for battery-powered applications

Supervisors Applications

• Power supply supervision in portable electronic devices
• Microcontroller system reset generation
• Battery backup switching circuits

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to obsolete status. Confirm package integrity and moisture sensitivity level handling requirements upon receipt. Cross-reference ordering part numbers against official ROHM documentation to ensure exact specification matching, as availability is restricted.

Supervisors Selection Notes

Select this component when a precise 4.3V threshold with a fixed 200ms delay is required. Ensure the application supports open drain outputs and operates within the specified voltage and temperature ranges. Consider the obsolete status for long-term production planning and evaluate alternative supervisory circuits if new design inclusion is necessary.

Supervisors Part Context

This component belongs to the BU45/BU46 series of voltage detectors from ROHM Semiconductor. These devices are designed for monitoring single-input power supplies with high accuracy and low power consumption. The series typically offers various threshold voltages and delay options to suit different system timing requirements.

Supervisors Replacement Considerations

BD5243G-1 is listed as a similar specification replacement option.