BD4853G-TR

Overview

The BD4853G-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features an N-channel open-drain output and operates within a reset active voltage range of 0.95 V to 10 V. The typical under-voltage detection threshold is set at 5.3 V with a precision of ±1%. The device draws a circuit current of 0.60 μA (at Vs=4.8V) in the ON state and 0.85 μA in the OFF state. Hysteresis is defined as Vs x 0.05. It lacks manual reset, watchdog timer, and adjustable delay functions. The component is supplied in an SSOP-5 package and supports RoHS compliance.

Feature Summary

• Provides precise under-voltage detection with high accuracy for system supervision
• Features low power consumption suitable for battery-operated applications
• Includes hysteresis function to prevent output oscillation during voltage transitions

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Battery-powered devices needing low quiescent current supervision
• General-purpose voltage monitoring in industrial control systems

Procurement Notes

Verify supply status carefully as this component may be designated as not recommended for new designs or subject to end-of-life notices. Confirm that the SSOP-5 package matches your PCB footprint requirements. Ensure the 5.3 V detection threshold aligns with your specific system voltage rails. Check for RoHS compliance documentation if required by your manufacturing standards. Validate that the absence of manual reset or watchdog features meets your application's safety logic requirements.

Selection Notes

Select this part when a fixed 5.3 V detection threshold is required without additional complexity like watchdog timers or manual resets. The low current consumption makes it suitable for energy-sensitive designs. Consider the open-drain output compatibility with your microcontroller input levels. Verify that the operating temperature range of -40°C to +105°C fits your environmental conditions. Compare against newer alternatives like the BD5250G-1 if similar package and enhanced features are needed.

Part Context

The BD4853G-TR belongs to the BD48 series of standard voltage detectors from ROHM. This series focuses on providing accurate voltage supervision with minimal power draw. The device is part of a broader family offering various detection voltages. It serves as a foundational component for power management systems where simple, reliable voltage monitoring is essential. The series emphasizes cost-effectiveness and ease of integration into compact electronic designs.

Replacement Considerations

The BD5250G-1 is listed as a similar level replacement with the same SSOP-5 package. Note that the BD5250G-1 offers an adjustable delay timer and different current specifications. Verify pinout compatibility before substitution. The BD5250G-1 may provide enhanced features but requires checking if the additional functionality impacts your design constraints.