BD48K42G-TL

Overview

The BD48K42G-TL is a standard CMOS voltage detector IC manufactured by Rohm Semiconductor. It features an N-channel open-drain output and provides a typical under-voltage detection threshold of 4.2 V with ±1% precision. The device supports a reset active voltage range from 0.95 V to 10 V. It operates within a temperature range of -40°C to +105°C and consumes a circuit current of 0.60 μA (ON) and 0.85 μA (OFF) at Vs=4.8V. The component is housed in an SSOP-3 package.

Feature Summary

• High-accuracy voltage detection with ±1% precision
• Ultra-low power consumption suitable for battery applications
• N-channel open-drain output configuration
• Wide operating supply voltage range up to 10 V

Applications

• Processor supervisor circuits
• Battery backup switching systems
• Portable electronic devices requiring low power monitoring
• General purpose voltage level detection

Procurement Notes

Verify the specific suffix 'TL' indicates tape and reel packaging when sourcing. Confirm the active status or obsolescence notice, as similar variants may have different lifecycle statuses. Ensure the SSOP-3 package matches the target PCB footprint. Check RoHS compliance documentation for environmental regulations. Validate the 4.2V threshold against system requirements before finalizing procurement.

Selection Notes

Select this component when a precise 4.2V detection threshold is required with minimal quiescent current. The open-drain output allows flexibility in interfacing with various logic levels. Consider the wide operating voltage range if the supply rail fluctuates significantly. The compact SSOP-3 package is ideal for space-constrained designs. Evaluate thermal performance within the specified -40°C to +105°C range for the intended environment.

Part Context

This part belongs to the BD48xxx series of highly accurate, low-current voltage detector ICs from Rohm. The series includes devices with N-channel open-drain outputs available for specific detection voltages ranging from 2.3V to 6.0V in increments of 0.1V. The BD48K42G-TL specifically targets the 4.2V detection point within this family, offering consistent performance characteristics across the series.

Replacement Considerations

BD5242G-1TR is listed as a similar specification replacement with comparable open-drain output and detection voltage.