BD4948G-TR

Overview

The BD4948G-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor, designed for monitoring power supply voltages in electronic circuits. It features a typical under-voltage detection threshold of 4.8 V with a precision of ±1%. The device operates within a reset active voltage range of 0.95 to 10 V and utilizes a CMOS output type with a low-level reset state. Key electrical specifications include a circuit current of 0.60 μA when ON (at Vs=4.8V) and 0.85 μA when OFF. It offers hysteresis voltage defined as Vs x 0.05 and supports L-output currents of 0.4 mA (LowVol) and 2 mA (HighVol). The component is housed in an SSOP5 package measuring 2.9x2.8 mm with a thickness of 1.25 mm, operating across a temperature range of -40°C to 105°C.

Feature Summary

• CMOS output structure providing low power consumption with specified on/off circuit currents.

Applications

• Power supply voltage monitoring in general electronic equipment

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm that the selected part matches the required SSOP5 form factor and electrical characteristics. Ensure compatibility with existing design constraints regarding the reset active state and output drive capabilities. Cross-reference the manufacturer's latest documentation to confirm availability status and any potential obsolescence notices associated with this component series.

Selection Notes

Select this component for applications requiring a fixed 4.8 V detection threshold with high accuracy. Consider the CMOS output type and low quiescent current for battery-powered or energy-efficient designs. Evaluate the thermal performance within the specified -40°C to 105°C operating range. Verify that the reset delay timer absence aligns with system timing requirements. Compare against recommended replacement options if new design inclusion is planned.

Part Context

The BD4948G-TR belongs to ROHM's standard voltage detector family, specifically engineered for reliable supervision of single-input voltage lines. It is categorized under PMIC - Power Management ICs and serves as a supervisory circuit for ensuring system stability during power fluctuations. The device is part of a broader lineup offering various detection thresholds and package options for diverse industrial and consumer applications.

Replacement Considerations

BD5248G-1 is listed as a recommended replacement with the same package and similar specifications.