The BU4919F-TR is a voltage detector IC (supervisor) manufactured by Rohm Semiconductor. It monitors the power supply voltage and generates a reset signal when the voltage falls below a specified threshold. This ensures that the microcontroller or other digital circuits operate correctly, preventing malfunctions caused by low voltage conditions. It is commonly used in various electronic devices, including automotive and industrial applications.

Applications:

• Microcontroller reset circuits
• Power supply monitoring
• Battery-powered devices
• Automotive electronics
• Industrial control systems

Features:

• Precise voltage detection threshold
• Low current consumption
• Open drain output
• Small package size
• Wide operating temperature range

Benefits:

• Ensures reliable system operation by preventing malfunctions caused by low voltage
• Minimizes power consumption, extending battery life in portable devices
• Simplifies system design with a compact and easy-to-use device
• Provides accurate and reliable voltage monitoring

Additional Details:

The BU4919F-TR operates over a wide supply voltage range. Its precise voltage detection threshold ensures accurate monitoring of the power supply. The open drain output allows for flexible connection to various microcontroller or digital circuit inputs. The device's low current consumption is essential for battery-powered applications. The small package size facilitates integration into compact electronic devices. The wide operating temperature range makes it suitable for use in harsh environments. The -TR suffix typically indicates tape and reel packaging for automated assembly. Rohm Semiconductor offers a range of voltage detectors with different voltage thresholds and features to suit various application requirements. Threshold voltage is typically around 1.9V.