The BD4928FVE is a voltage detector IC from Rohm Semiconductor, designed for monitoring power supply voltages and providing a reset signal to microcontrollers or other digital devices when the voltage falls below a specified threshold. This ensures stable operation and prevents data corruption caused by undervoltage conditions. The "FVE" designation typically refers to a specific package type and operating voltage range.

Applications

• Microcontroller reset circuits
• CPU reset circuits
• Power supply voltage monitoring
• Battery-powered devices
• Industrial control systems

Features

• High-accuracy detection voltage: Ensures precise voltage monitoring and reliable reset operation.
• Low current consumption: Minimizes power drain, extending battery life in portable applications.
• Open drain output: Allows for flexible interfacing with various logic circuits and external pull-up resistor configurations.
• Compact package: Enables space-saving designs and efficient PCB layouts.
• Wide operating temperature range: Ensures stable performance across a broad range of environmental conditions.

Benefits

• Prevents data corruption: Protects against data loss and system errors caused by low voltage.
• Ensures proper system startup: Guarantees the microcontroller or CPU starts in a known state after a voltage drop.
• Enhances system reliability: Provides stable and accurate voltage detection for improved system stability.
• Extends battery life: Low current consumption is crucial for maximizing the operational time of battery-powered devices.
• Simplifies circuit design: Easy to integrate with minimal external components and flexible output configuration.

Additional Details

The BD4928FVE typically requires an external pull-up resistor connected to its open-drain output. The precise detection voltage is specified in the device's datasheet and can vary depending on the specific part number variant. The IC is commonly housed in a small surface-mount package, such as a SOT-25 or similar, making it suitable for high-density PCB assembly. The operating temperature range is usually from -40°C to +85°C, making it appropriate for industrial and automotive applications. The combination of precise voltage detection, low power consumption, and small package size makes it a popular choice for voltage monitoring in a wide range of electronic circuits.