BD46471G-TR

Overview

The BD46471G-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply lines. It features a fixed threshold voltage of 4.7V with an accuracy of ±1%. The device provides a CMOS push-pull output that is active low, ensuring reliable reset signal generation. A fixed reset delay time of 100ms is integrated to prevent false triggering during power-up transients. It operates within a wide supply voltage range of 0.95V to 10V and supports manual reset functionality. The component is housed in a compact 5-pin SSOP package.

Feature Summary

• CMOS push-pull output structure for direct logic interface
• Fixed 100ms reset delay timer for stable power-on sequencing
• Manual reset input capability for system control
• High detection accuracy with ±1% threshold tolerance

Applications

• Microprocessor and microcontroller power supply supervision
• Battery-operated devices requiring voltage monitoring
• Industrial control systems needing reliable reset signals
• Consumer electronics with strict power-up timing requirements

Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance and halogen-free status as per manufacturer documentation. Confirm the 'TR' suffix denotes tape-and-reel packaging suitable for automated assembly. Check current lifecycle status, as this part may be subject to last-time-buy notices or obsolescence warnings. Ensure the operating temperature range meets your application's environmental specifications before finalizing procurement.

Selection Notes

Select this component when a fixed 4.7V threshold is required for system supervision. The CMOS output is suitable for driving standard digital logic inputs directly. Consider the manual reset feature if external user intervention is needed for system recovery. Evaluate the 100ms delay against your processor's minimum power-on reset time requirements. Compare static current consumption against other options if battery life is a critical design constraint.

Part Context

This part belongs to the BD46 series of voltage detectors from ROHM Semiconductor. The series offers various fixed threshold voltages to accommodate different logic families and power rails. The BD46471G-TR specifically targets applications requiring a 4.7V detection level. It shares pinout compatibility with other members of the family, facilitating design flexibility across different voltage monitoring needs within the same product line.

Replacement Considerations

• BD5247G-1

FAQ

What is the reset delay time for the BD46471G-TR?

The BD46471G-TR features a fixed reset delay time of 100ms.

Does the BD46471G-TR support manual reset?

Yes, the device includes a manual reset function allowing external control over the reset state.

What is the output type of the BD46471G-TR?

The output type is CMOS push-pull (totem pole) with an active-low reset signal.