BD49K48G-TL

Overview

The BD49K48G-TL is a CMOS output voltage detector IC from the BD49 series by ROHM Semiconductor. It features a fixed detection threshold of 4.8V with an accuracy of ±1%. The device operates within a supply voltage range up to 10V and consumes a typical operating current of 900 nA. It provides a reset delay time of 100 µs and lacks manual reset, watchdog timer, or chip enable functions. The component is housed in a 3-pin SSOP package and supports operation across a temperature range of -40°C to +105°C.

Feature Summary

• CMOS output interface for direct logic integration
• High precision voltage detection with ±1% accuracy
• Ultra-low power consumption suitable for battery applications

Applications

• Processor supervisor circuits
• Battery voltage monitoring systems
• Portable electronic device power management

Procurement Notes

Verify the specific suffix G-TL against the manufacturer's latest datasheet to confirm pinout and electrical specifications. Check RoHS compliance status and moisture sensitivity levels before procurement. Confirm availability as distribution channels may list obsolete status. Ensure the SSOP-3 package dimensions match the target PCB footprint requirements.

Selection Notes

Select this component when a fixed 4.8V threshold is required with CMOS output compatibility. Consider the 100 µs reset delay for timing-sensitive applications. Evaluate the 900 nA quiescent current against system power budgets. Compare against open-drain variants if active-high outputs are needed instead.

Part Context

This part belongs to the BD49xxx series of high-accuracy, low-current voltage detectors. The series offers various detection voltages from 2.3V to 6.0V in 0.1V increments. It is designed for applications requiring precise monitoring without complex configuration options like watchdog timers or manual resets.

Replacement Considerations

BD49K48G (non-tape reel version) shares identical electrical characteristics but differs in packaging quantity.