BD4956G-TR

Overview

The BD4956G-TR is a standard CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply rails. It features a fixed detection threshold of 5.6V with a precision of ±1%. The device operates within a reset active voltage range of 0.95V to 10V and draws low circuit current (0.60μA ON, 0.85μA OFF at Vs=4.8V). It utilizes a push-pull CMOS output with an active-low reset signal and includes hysteresis defined as Vs x 0.05. The component supports surface mount installation in a 5-pin SSOP package (2.9x2.8mm) and functions across a temperature range of -40°C to 105°C.

Feature Summary

• Standard CMOS voltage detection with high accuracy
• Low current consumption for power efficiency
• Active-low reset output with push-pull configuration
• Integrated hysteresis for noise immunity

Applications

• Processor supervisor circuits
• Battery voltage monitoring systems
• Power supply supervision in embedded devices

Procurement Notes

Verify the obsolete status of this part number before procurement planning. Confirm availability of qualified replacement components such as the BD5250G-1TR. Ensure that any substitute maintains compatible package dimensions and electrical specifications to avoid redesign efforts. Check RoHS compliance and lead times for alternative sources.

Selection Notes

Select this component when a fixed 5.6V threshold is required with CMOS output compatibility. Consider the ±1% precision and low standby current for battery-operated applications. Verify that the operating voltage range up to 10V aligns with the system's maximum supply rail. Ensure the SSOP5 package fits the PCB layout constraints.

Part Context

This component belongs to the BD49xxx series of voltage detectors from ROHM. The series offers various detection voltages from 2.3V to 6.0V in 0.1V increments. These ICs are characterized by high accuracy and low current consumption, suitable for supervisory roles in portable and industrial electronics.

Replacement Considerations

The BD5250G-1TR is a recommended replacement with similar SSOP5 packaging. Note differences in detection voltage (5.0V vs 5.6V), output type (open drain vs CMOS), and adjustable delay timer capabilities.