BD48K29G-TL

Overview

The BD48K29G-TL is a voltage detector IC from Rohm Semiconductor's BD48 series, housed in a 3-pin SSOP package. It features an N-channel open-drain output and monitors a single input channel with a typical detection threshold of 2.9V. The device operates within a supply voltage range of 2.3V to 10V and maintains a detection precision of ±1%. It includes a fixed reset delay timer of 100µs and offers a reset active voltage range from 0.95V to 10V. The component supports an operating temperature range of -40°C to +105°C.

Feature Summary

• Provides precise under-voltage monitoring with high accuracy for system supervision
• Features low power consumption suitable for battery-operated applications
• Includes a fixed delay timer to prevent false resets during power transitions

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Battery-powered devices needing low quiescent current management
• General electronic systems requiring under-voltage protection

Procurement Notes

Verify the specific suffix TL against official Rohm documentation to confirm packaging and tape specifications. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Ensure the SSOP-3 package dimensions match your PCB footprint requirements. Check for any end-of-life notices or last-time-buy statuses before finalizing procurement plans.

Selection Notes

Select this component when a 2.9V detection threshold is required with ±1% precision. Consider the 100µs delay timer if immediate reset response is not critical. Evaluate the open-drain output compatibility with your system logic levels. Compare power consumption metrics against alternatives if extended battery life is a primary design constraint.

Part Context

This part belongs to the BD48 series of highly accurate, low-current voltage detectors. The series typically includes devices with N-channel open-drain outputs available in various detection voltages. The BD48K29G-TL specifically targets applications requiring reliable supervision in compact 3-pin packages.

Replacement Considerations

The BD5229G-1 is listed as a recommended replacement with similar specifications. Note that the substitute uses an SSOP-5 package instead of SSOP-3, requiring layout adjustments.