BD46451G-TR

Overview

The BD46451G-TR is a voltage detector IC with a fixed delay time, manufactured by ROHM Semiconductor. It features an under-voltage detection voltage of 4.5 V with a precision of ±1%. The reset active voltage range spans from 0.95 V to 10 V, utilizing a CMOS output type. A fixed delay timer of 100 msec is integrated, and the reset active state is low. The device supports manual reset functionality but lacks a watchdog timer. Circuit current consumption is 0.80 μA (ON) and 0.85 μA (OFF) at VDET=4.8V. Hysteresis voltage is defined as VDET x 0.05. Output currents are 1.2 mA (LowVol) and 5 mA (HighVol). Operating temperature ranges from -40°C to 105°C.

Feature Summary

• Integrates a fixed 100 msec delay timer for controlled reset timing
• Supports manual reset functionality for system control flexibility
• Provides CMOS output with defined hysteresis characteristics

Applications

• General purpose voltage monitoring in electronic circuits
• Microprocessor reset circuit generation
• Battery-powered device supervision

Procurement Notes

Verify supply status carefully as this component may be subject to discontinuation or last-time-buy restrictions. Confirm package compatibility and electrical specifications against the official datasheet before integration. Ensure ordering part numbers match required tape-and-reel quantities. Check for recommended replacement parts if new designs are planned.

Selection Notes

Select this component when a fixed 100 msec delay is required without adjustable timing components. Suitable for applications needing manual reset capability and CMOS output drive. Compare current consumption and operating voltage range against system requirements. Consider alternative models like BD5245G-1 if adjustable delay or open-drain output is preferred.

Part Context

This voltage detector belongs to the BD46 series of supervisory circuits designed for reliable power management. It complements other ROHM detectors offering various delay times and output types. The SSOP-5 package provides compact mounting solutions for space-constrained designs within the broader portfolio of power management ICs.

Replacement Considerations

BD5245G-1 is listed as a similar level replacement with the same package. Note differences in delay adjustability and output type when substituting.