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BD4939G-TR

BD4939G-TR Description

The BD4939G-TR is a high-performance voltage detector designed by Rohm Semiconductor, a leading manufacturer in the electronics industry. This device is part of the BD49xxx series and is specifically engineered to monitor a single voltage channel with a threshold voltage of 3.9V. It is ideal for applications requiring precise voltage monitoring and reliable system reset functionality. The BD4939G-TR is packaged in a 5SSOP surface mount package, making it suitable for compact and space-constrained designs. The device is available in a tape and reel format (TR), facilitating efficient manufacturing processes.

BD4939G-TR Features

• Single Voltage Monitoring: The BD4939G-TR is designed to monitor a single voltage channel, ensuring accurate detection and response to voltage levels.
• 3.9V Threshold Voltage: With a threshold voltage of 3.9V, the device provides precise voltage detection, making it suitable for applications where specific voltage levels need to be maintained.
• Active Low Reset: The reset function of the BD4939G-TR is active low, providing flexibility in system design and ensuring reliable reset operations.
• Surface Mount Technology (SMT): The BD4939G-TR is available in a surface mount package, which is ideal for modern PCB designs and automated manufacturing processes.
• Moisture Sensitivity Level (MSL) 1: This indicates that the device is not moisture-sensitive and can be stored and handled without special precautions, reducing manufacturing complexity and cost.
• Compliance and Standards: The BD4939G-TR is REACH unaffected and ROHS3 compliant, ensuring it meets the latest environmental and safety standards. It also has an ECCN classification of EAR99, facilitating international trade and compliance.
• High-Quality Packaging: The device is packaged in a tape and reel format, which is ideal for automated pick-and-place equipment, ensuring high production efficiency and reliability.

BD4939G-TR Applications

The BD4939G-TR is well-suited for a variety of applications where reliable voltage monitoring and system reset are critical. Some specific use cases include:

• Power Supply Monitoring: In power supply units, the BD4939G-TR can be used to monitor the output voltage, ensuring it remains within specified limits and triggering a reset if the voltage drops below the threshold.
• Embedded Systems: In embedded systems, such as microcontrollers and other low-power devices, the BD4939G-TR can provide a reliable reset mechanism to ensure system stability and prevent malfunctions due to voltage fluctuations.
• Industrial Control Systems: In industrial environments, the BD4939G-TR can be used to monitor critical power lines, ensuring that equipment operates within safe voltage ranges and preventing damage due to voltage sags or surges.
• Consumer Electronics: In consumer electronics, such as smartphones, tablets, and laptops, the BD4939G-TR can help ensure reliable operation by monitoring battery voltage and triggering a reset if the voltage drops to a level that could cause system instability.

Conclusion of BD4939G-TR

The BD4939G-TR from Rohm Semiconductor is a robust and reliable voltage detector that offers precise voltage monitoring and reset functionality. Its single-channel monitoring capability, combined with a 3.9V threshold voltage, makes it ideal for applications requiring specific voltage level detection. The device's surface mount package and tape and reel format ensure it is suitable for modern manufacturing processes. With its compliance to REACH and ROHS3 standards, the BD4939G-TR is an environmentally friendly and safe choice for a wide range of applications. Whether used in power supply monitoring, embedded systems, industrial control systems, or consumer electronics, the BD4939G-TR provides a reliable and efficient solution for voltage detection and system reset.