The BD4950FVE-TR is a voltage detector IC manufactured by Rohm Semiconductor. This device is designed to monitor voltage levels in electronic circuits and provide a reset or enable signal when the voltage drops below a predetermined threshold. It's commonly used to ensure that microcontrollers, processors, and other digital logic circuits operate reliably, especially during power-up, power-down, or brownout conditions.

Applications

• Microcontroller reset circuits: Ensuring proper startup and preventing program execution errors.
• CPU voltage monitoring: Protecting CPUs from damage due to undervoltage operation.
• Power supply monitoring: Monitoring the stability of power supplies in various electronic devices.
• Battery-powered equipment: Preventing deep discharge of batteries by disabling the load when the voltage is too low.
• Industrial control systems: Monitoring power supplies to critical components and triggering safety mechanisms if needed.

Features

• Low current consumption: Minimizes power drain, which is crucial for battery-powered applications.
• High-accuracy detection voltage: Provides a precise and reliable indication of voltage levels.
• Built-in hysteresis: Prevents oscillation of the output signal due to noise or minor voltage fluctuations.
• Open drain output: Allows for flexible connection to other circuits and logic levels.
• Small surface-mount package: Suitable for compact electronic designs.

Benefits

• Improved system reliability: Prevents data corruption and system crashes due to voltage fluctuations.
• Simplified circuit design: Reduces the number of external components required for voltage monitoring.
• Extended battery life: Low current consumption helps prolong battery life in portable devices.
• Enhanced system protection: Protects sensitive components from damage caused by undervoltage conditions.
• Cost-effective solution: Provides a reliable voltage monitoring function at a low cost.

Additional Details

The BD4950FVE-TR typically operates with a supply voltage range of 1.5V to 5.5V. The detection voltage is pre-set and depends on the specific variant. The "-TR" suffix often indicates tape and reel packaging for automated assembly. The device has an open-drain output, requiring an external pull-up resistor. When the supply voltage drops below the detection threshold, the output goes low; when the voltage rises above the threshold plus the hysteresis voltage, the output goes high. The operating temperature range is usually quite broad. For specific details on detection voltage, current consumption, temperature ratings, and packaging specifications, refer to the official Rohm Semiconductor datasheet for the BD4950FVE-TR. This device is typically used in applications where voltage monitoring and reset functionality are essential for stable operation.