The BD5223G is a voltage detector IC manufactured by Rohm Semiconductor. It is designed to monitor the supply voltage and generate a reset signal when the voltage drops below a specified threshold. This ensures the stable operation of microcontroller-based systems and prevents malfunctions due to undervoltage conditions.

Applications

• Microcontroller reset circuits
• Power supply monitoring
• Portable electronic devices
• Industrial control systems
• Automotive electronics

Features

• High-precision detection voltage
• Low current consumption
• Built-in hysteresis
• Open-drain output
• Small surface-mount package (e.g., SOT-25)

Benefits

• Protects microcontrollers from malfunction due to voltage drops
• Ensures proper reset sequence
• Extends battery life in portable devices
• Provides stable and reliable reset signal
• Reduces board space requirements

Additional Details

The BD5223G features a highly accurate detection voltage, ensuring precise monitoring of the supply voltage. Its low current consumption makes it ideal for battery-powered applications where minimizing power usage is critical. The built-in hysteresis prevents oscillations around the threshold voltage, resulting in a stable and reliable reset signal. The open-drain output allows for flexible interfacing with various microcontrollers and logic circuits. The small surface-mount package facilitates compact designs and efficient board layout. It comes in a 2.3V detection voltage version.

This voltage detector IC is commonly used in microcontroller-based systems to prevent data corruption and system crashes caused by undervoltage conditions. It monitors the supply voltage and asserts a reset signal when the voltage drops below the specified threshold, ensuring that the microcontroller restarts in a known state. It is also used in power supply monitoring circuits to detect undervoltage conditions and trigger appropriate actions. The BD5223G is a reliable and cost-effective solution for voltage monitoring and reset generation in a wide range of electronic applications.