BD4843G-TR

Overview

The BD4843G-TR is a standard CMOS voltage detector IC from Rohm Semiconductor, designed for supervisory circuit applications. It features a single-channel monitoring capability with a typical under-voltage detection threshold of 4.3V and a precision accuracy of ±1%. The device utilizes an open-drain output type that provides a low-active reset signal. It operates within a supply voltage range of 1.2V to 10V and supports a reset active voltage range from 0.95V to 10V. The component is housed in a 5-SSOP package (SC-74A/SOT-753) and is rated for an operating temperature range of -40°C to 105°C.

Feature Summary

• CMOS technology ensures ultra-low current consumption for efficient power management.
• Open-drain output configuration allows flexible interfacing with various logic families.
• High detection accuracy guarantees reliable system supervision under varying conditions.

Applications

• Supervising power supply voltages in embedded systems
• Monitoring battery levels in portable electronic devices
• Providing reset signals for microcontrollers and digital circuits

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet to ensure compatibility with your design requirements. Confirm the RoHS compliance status and environmental certifications prior to integration. Check the latest supply status as this component may be subject to lifecycle changes or discontinuation notices from the manufacturer.

Selection Notes

Select this component when a precise 4.3V threshold is required for system supervision. Consider the open-drain output and low-active reset characteristics for logic interface compatibility. Evaluate the operating temperature range and package size constraints to ensure suitability for the target application environment and PCB layout specifications.

Part Context

The BD4843G-TR belongs to the BD48xxx series of standard voltage detectors from Rohm Semiconductor. This series is engineered for general-purpose power management tasks requiring accurate voltage monitoring. The part is commonly used in consumer electronics and industrial equipment where reliable system reset functionality is critical for maintaining operational stability.

Replacement Considerations

The BD5243G-1 is listed as a similar level replacement with the same package type. Verify electrical parameter alignment and pin compatibility before substitution. Note that the BD5243G-1 may have different supply voltage ranges or current consumption characteristics compared to the BD4843G-TR.