BD46272G-TR

Overview

The BD46272G-TR is a voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages. It features a fixed reset delay time of 200 milliseconds and supports manual reset functionality. The device operates within a reset active voltage range of 0.95 V to 10 V with a typical under-voltage detection threshold of 2.7 V. It offers high precision with a ±1% tolerance on the detection voltage. The IC consumes low circuit current, specified at 0.80 μA in the ON state and 0.85 μA in the OFF state when the supply voltage is 4.8 V. It utilizes a CMOS output type and is housed in an SSOP-5 package.

Feature Summary

• Incorporates a fixed 200 ms reset delay timer to ensure stable system initialization.
• Supports manual reset input for direct control over the reset signal state.
• Provides high accuracy voltage detection with ±1% precision tolerance.
• Operates with ultra-low current consumption suitable for battery-powered applications.

Applications

• Microprocessor and microcontroller system supervision
• Portable electronic devices requiring low power monitoring
• Industrial control systems needing reliable voltage tracking

Procurement Notes

Verify the specific suffix and packaging configuration against the official datasheet to ensure compatibility with existing board layouts. Confirm that the component status aligns with long-term availability requirements, as supply status may change. Cross-reference the pinout and electrical characteristics with the target application specifications before finalizing procurement decisions.

Selection Notes

Select this component when a fixed delay period is required without external timing components. The manual reset feature allows for flexible system recovery strategies. Ensure the operating voltage range covers the minimum and maximum supply levels of the monitored circuit. Consider the SSOP-5 package constraints for PCB space limitations.

Part Context

This part belongs to the BD46 series of voltage detectors from ROHM Semiconductor. It is specifically engineered for applications requiring precise voltage monitoring with minimal external component count. The series is known for its low power consumption and compact packaging options, making it suitable for space-constrained designs.

Replacement Considerations

The BD5227G-1TR is listed as a similar level replacement with the same package. Verify if the adjustable delay feature of the substitute meets the fixed delay requirement of the original design.

FAQ

What is the reset active state of the BD46272G-TR?

The reset output is active low.

Does the BD46272G-TR include a watchdog timer?

No, this model does not include a watchdog timer function.