BD46461G-TR

Overview

The BD46461G-TR is a voltage detector with a fixed delay time manufactured by ROHM Semiconductor. It features an under-voltage detection voltage of 4.6 V typical and a precision of ±1%. The reset active voltage range spans from 0.95 V to 10 V, utilizing a CMOS output type. The device incorporates a fixed delay timer of 100 msec and maintains a low reset active state. It supports manual reset functionality and operates within a temperature range of -40°C to 105°C. Circuit current consumption is 0.80 μA in the ON state and 0.85 μA in the OFF state at VDET=4.8V. Hysteresis voltage is defined as VDET x 0.05. The L output current capabilities are 1.2 mA for LowVol and 5 mA for HighVol.

Feature Summary

• Fixed delay timer ensures consistent reset timing without external components
• Manual reset capability allows for system initialization control
• CMOS output interface provides direct logic compatibility
• Low power consumption suitable for battery-operated applications

Applications

• Microprocessor reset circuits requiring fixed delay
• Battery-powered devices needing voltage supervision
• Industrial control systems with manual reset requirements
• Consumer electronics power management

Procurement Notes

Verify supply status carefully as this component may be subject to Last Time Buy restrictions or obsolescence. Confirm that the SSOP5 package matches your PCB footprint design. Ensure the CMOS output type aligns with your downstream logic input requirements rather than open-drain alternatives. Validate the 100 msec fixed delay against your system startup timing specifications before finalizing procurement decisions.

Selection Notes

Select this part when a fixed 100 msec delay is required instead of adjustable timing. Choose over BD5246G-1 if manual reset functionality is necessary, as the alternative lacks this feature. Consider the higher circuit current consumption compared to newer low-power variants. Verify that the 10 V maximum reset active voltage range meets your system's operating conditions.

Part Context

This component belongs to ROHM's voltage detector family designed for supervisory applications. It shares the same SSOP5 package form factor as related models like the BD5246G-1 but differs in output type and reset features. The BD46461G-TR represents a specific configuration within the broader portfolio of power management ICs offered by the manufacturer for embedded systems.

Replacement Considerations

BD5246G-1 is listed as a recommended replacement with similar specifications but offers adjustable delay and open-drain output instead of fixed delay and CMOS output.