BD45462G-TR

Overview

The BD45462G-TR is a voltage detector IC from Rohm Semiconductor featuring a fixed delay time. It provides an under-voltage detection threshold of 4.6V with a precision of ±1%. The device outputs a low-active signal via an open-drain configuration and supports manual reset functionality. It operates within a supply voltage range of 0.95V to 10V and maintains a typical circuit current of 0.80µA in the ON state. The component is housed in a 5-pin SSOP package and is rated for operation between -40°C and 105°C.

Feature Summary

• Fixed delay timer ensures consistent reset timing without external components
• Open-drain output allows flexible interfacing with various logic levels
• Manual reset pin enables immediate system recovery on demand

Applications

• Microprocessor reset circuits requiring fixed timing delays
• Battery-powered systems monitoring under-voltage conditions
• Industrial control boards needing reliable power supervision

Procurement Notes

Verify the specific suffix G-TR against the manufacturer's latest documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status as required by your assembly standards. Check for any obsolescence notices or last-time-buy notifications, as availability may be restricted. Ensure the ordering part number matches the exact electrical characteristics needed for your design.

Selection Notes

Select this component when a fixed delay period is preferred over adjustable timing to reduce bill-of-materials complexity. The open-drain output is suitable for applications requiring wired-OR connections or level shifting. Consider the manual reset feature if immediate fault recovery is critical. Verify that the 4.6V detection threshold aligns with the target system's minimum operating voltage requirements.

Part Context

This part belongs to the BD45xxx series of voltage detectors designed for general-purpose power management. It complements other Rohm supervisor ICs by offering a simple, cost-effective solution for basic reset generation. The series focuses on low power consumption and high accuracy within standard industrial temperature ranges.

Replacement Considerations

The BD5246G-1 is listed as a recommended replacement with the same SSOP5 package. Note that the substitute offers adjustable delay timing rather than fixed delay. Verify compatibility regarding output drive strength and hysteresis characteristics before substitution.