BD4844G-TR

Overview

The BD4844G-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features an under-voltage detection threshold of 4.4 V with a precision of ±1%. The reset active voltage range spans from 0.95 V to 10 V, utilizing an open-drain output type. The device operates without a manual reset or watchdog timer function. Circuit current consumption is specified at 0.60 μA when on and 0.85 μA when off, measured at VS=4.8V. Hysteresis voltage is defined as VS x 0.05 or Vdet x 0.05. It is housed in an SSOP-5 package.

Feature Summary

• Standard CMOS voltage detection architecture
• Open-drain output configuration for flexible interfacing
• Low power consumption characteristics suitable for battery applications

Applications

• Microprocessor system supervision
• Battery-powered equipment monitoring
• Portable electronic devices

Procurement Notes

Verify the specific ordering part number BD4844G-TR against the manufacturer's official documentation to ensure correct component identification. Confirm that the SSOP-5 package matches the design requirements. Check the supply status as this product may be designated as not recommended for new designs; consult the latest datasheet for availability and lifecycle information before finalizing procurement plans.

Selection Notes

Select this component when a precise 4.4 V detection threshold is required for system supervision. The open-drain output allows compatibility with various logic levels within the 0.95 V to 10 V reset active range. Consider the low circuit current consumption for energy-efficient designs. Ensure the SSOP-5 package fits the PCB layout constraints. Verify that no manual reset or watchdog functionality is needed for the application.

Part Context

The BD4844G-TR belongs to the BD48 series of standard voltage detectors from ROHM Semiconductor. This series provides reliable under-voltage monitoring solutions. The TR suffix indicates tape and reel packaging for automated assembly. Similar components in the family include variants with different detection voltages and packages, such as the BD5244G-1.

Replacement Considerations

The BD5244G-1 is listed as a similar level replacement with the same package (SSOP-5). Note that the BD5244G-1 has a slightly different Vdet precision of ±0.9% and a reset active voltage range of 0.8 V to 6 V. Verify electrical parameter compatibility before substitution.