BD48K49G-TL

Overview

The BD48K49G-TL is a voltage detector IC from the ROHM BD48 series, designed for monitoring single power supply lines. It features an N-channel open-drain output and operates within a supply voltage range of 2.3 V to 10 V. The device provides a precise detection threshold of 4.9 V with an accuracy of ±1%. It includes a fixed reset delay time of 100 µs and consumes only 900 nA of operating current. The component is housed in a compact SSOP-3 package and supports an extended industrial temperature range from -40 °C to +105 °C.

Feature Summary

• High-precision voltage detection with ±1% threshold accuracy
• Ultra-low power consumption suitable for battery-operated systems
• N-channel open-drain output configuration for flexible interfacing
• Compact three-pin surface-mount packaging

Applications

• Microprocessor system reset circuits
• Battery-powered device power management
• Portable electronic equipment supervision
• Industrial control system voltage monitoring

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to obsolete status. Confirm RoHS compliance documentation matches specific manufacturing batches. Validate pinout orientation as the ground pin may be rotated compared to standard configurations. Ensure storage conditions account for moisture sensitivity levels prior to reflow soldering processes.

Selection Notes

Select this component when a fixed 4.9 V threshold is required for single-input voltage supervision. Consider the open-drain output capability for compatibility with various logic families. Evaluate the 100 µs reset delay against system startup timing requirements. Verify that the SSOP-3 footprint aligns with existing PCB layout constraints and thermal dissipation needs.

Part Context

This part belongs to the BD48xxx series of highly accurate, low-current voltage detectors manufactured by ROHM Semiconductor. The series offers multiple detection voltages in 0.1 V increments ranging from 2.3 V to 6.0 V. All devices in this family share similar electrical characteristics, including low standby current and open-drain outputs, differing primarily in their specific threshold voltage settings.

Replacement Considerations

BD5245G-1TR is listed as a recommended replacement with similar specifications.