BD5228G-1TR

Overview

The BD5228G-1TR is a CMOS voltage detector manufactured by Rohm Semiconductor, designed for power supply supervision. It features a fixed detection threshold of 2.8V with a precision of ±0.9%. The device operates within a supply voltage range of 0.8V to 6V and supports an operating temperature range from -40°C to 85°C. It utilizes an open-drain output type with low active reset state. Key electrical parameters include a typical circuit current of 0.23µA in the ON state and 0.27µA in the OFF state. The IC incorporates an adjustable delay timer controlled by an external capacitor, offering flexibility in reset timing.

Feature Summary

• Adjustable delay time setting controlled by an external capacitor
• Ultra-low current consumption utilizing Nano Energy™ CMOS process
• N-channel open drain output configuration
• High accuracy voltage detection with ±0.9% precision

Applications

• Power supply monitoring in portable electronic devices
• Battery-powered equipment requiring extended drive time
• General purpose voltage supervision circuits
• Embedded systems requiring reliable reset signals

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific packaging requirements such as tape and reel quantities. Check for any obsolescence notices or last-time-buy recommendations prior to finalizing procurement plans to ensure long-term supply stability.

Selection Notes

Select this component when a fixed 2.8V threshold with high precision is required alongside customizable reset delays. Consider the ultra-low current consumption for battery-sensitive applications. Ensure the design accommodates an external capacitor for delay adjustment. Verify that the open-drain output interface matches the target system's logic levels and pull-up requirements.

Part Context

This part belongs to the BD52xx series of Nano Energy™ voltage detectors from Rohm. It serves as a replacement for older models like the BU4928G and BD46281G, offering improved precision and lower current consumption. The series is characterized by small SSOP5 packages suitable for space-constrained designs, though it is not recommended for automotive use.

Replacement Considerations

• BD5228G-TR
• BD4828G-TR

FAQ

How is the reset delay time configured?

The reset delay time is adjustable and controlled by connecting an external capacitor to the designated pin.

Is this component suitable for automotive applications?

No, this product is not recommended for use in automotive equipment.