BD46281G-TR

Overview

The BD46281G-TR is a voltage detector with fixed delay time manufactured by ROHM Semiconductor. It features an under-voltage detection threshold of 2.8V typical, with a precision of ±1%. The reset active voltage range spans from 0.95V to 10V. It utilizes a CMOS output type and includes a manual reset function. The reset delay timer is fixed at 100msec. The circuit current is 0.80μA (on) and 0.85μA (off) at Vdet=4.8V. It operates within a temperature range of -40°C to +105°C and is housed in an SSOP-5 package.

Feature Summary

• Integrates a fixed 100msec reset delay timer for stable power-up sequencing.
• Supports manual reset functionality for system control flexibility.
• Delivers high detection precision with ±1% accuracy on the voltage threshold.
• Maintains ultra-low power consumption suitable for battery-operated applications.

Applications

• Portable electronic devices requiring low standby current
• Battery-powered equipment needing reliable under-voltage monitoring
• General-purpose digital systems requiring manual reset capability

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet to ensure compatibility with existing designs. Confirm supply status as this component may be subject to end-of-life notices or replacement recommendations. Check RoHS compliance documentation for regulatory adherence. Ensure the fixed delay characteristics align with system timing requirements before procurement.

Selection Notes

Select this component when a fixed delay period is sufficient for system stability without the need for adjustable timing circuits. The manual reset feature allows for external intervention during fault conditions. Consider the low operating current for energy-sensitive applications. Verify that the CMOS output drive capability meets the load requirements of the connected logic or microcontroller inputs.

Part Context

This part belongs to the BD46 series of voltage detectors from ROHM Semiconductor. It is designed for supervisory applications where precise voltage monitoring and controlled reset timing are critical. The SSOP-5 package offers a compact footprint for space-constrained PCB layouts. It serves as a fundamental building block for power management in various consumer and industrial electronics.

Replacement Considerations

BD5228G-1TR is listed as a similar level replacement with the same package and comparable specifications.

FAQ

What is the reset active state for the BD46281G-TR?

The reset output is active low.

Does the BD46281G-TR include a watchdog timer?

No, this component does not integrate a watchdog timer.