BU4848F-TR

Supervisors Overview

The BU4848F-TR is a standard voltage detector manufactured by Rohm Semiconductor, designed for monitoring power supply voltages. It features an open-drain output type and operates within a reset active voltage range of 0.7 to 7 V. The typical under-voltage detection voltage (Vdet) is 4.8 V with a precision of ±1%. The device includes hysteresis voltage defined as Vdet x 0.05. Circuit current consumption is 0.40 μA when on (at Vdet=4.8V) and 0.55 μA when off. It supports a temperature range from -40°C to +125°C and is housed in an SOP-4 package.

Supervisors Feature Summary

• Provides precise under-voltage detection with a typical threshold of 4.8 V and ±1% accuracy.
• Features low power consumption with circuit currents of 0.40 μA (on) and 0.55 μA (off).
• Includes built-in hysteresis to prevent output oscillation during voltage transitions.

Supervisors Applications

• Monitoring power supply voltages in electronic circuits.
• Providing reset signals for microcontrollers and digital logic systems.
• Ensuring system stability in portable devices requiring low standby current.

Supervisors Procurement Notes

Verify the specific ordering suffix and tape quantity against official Rohm documentation before procurement. Confirm that the SOP-4 package matches the target PCB footprint. Check for RoHS compliance status and ensure the component meets the required operating temperature range for the intended application environment.

Supervisors Selection Notes

Select this component when a fixed 4.8 V detection threshold is required with high precision. Consider the low current consumption for battery-operated applications. Ensure the open-drain output configuration aligns with the downstream circuit's input requirements. Verify compatibility with the available SOP-4 package size.

Supervisors Part Context

The BU4848F-TR belongs to Rohm's standard voltage detector series, which offers various detection thresholds and packages. This specific model provides a 4.8 V threshold in a compact SOP-4 package. It is part of a family designed for simple reset generation without additional features like watchdog timers or manual resets.

Supervisors Replacement Considerations

BD5248G-1TR is listed as a similar specification replacement with comparable 4.8 V detection voltage and open-drain output. Verify package differences (SSOP-5 vs SOP-4) and parameter tolerances before substitution.