The MB4072PF-G-BND-TR is a power supply monitoring IC manufactured by Fujitsu Electronics America, Inc. This device is designed to monitor the voltage level of a power supply and provide a reset signal to a microprocessor or microcontroller when the voltage falls below a predetermined threshold. This functionality protects the system from data corruption and erratic behavior caused by undervoltage conditions.

Applications

• Microprocessor reset circuits
• Power supply monitoring systems
• Battery-powered applications
• Embedded systems
• Industrial control systems

Features

• Precise voltage detection
• Low supply current
• Open-drain reset output
• Adjustable reset timeout period (typically using an external capacitor)
• Built-in hysteresis
• Small package size (e.g., SOT-25)
• RoHS compliant

Benefits

• Prevents system malfunctions due to low voltage
• Ensures data integrity during power fluctuations
• Extends battery life in portable devices
• Simplifies power supply monitoring design
• Enhances system reliability
• Reduces system cost

Additional Details

The MB4072PF-G-BND-TR works by constantly monitoring the input voltage and comparing it to an internal reference voltage. When the input voltage drops below the specified threshold, the IC asserts a reset signal. The open-drain output allows the device to be easily interfaced with a variety of microprocessors and microcontrollers. An external capacitor can be connected to adjust the reset timeout period, providing flexibility in system design. The built-in hysteresis prevents oscillations around the threshold voltage, ensuring a stable reset signal. The low supply current makes the device suitable for battery-powered applications. The small package size allows for use in compact electronic devices. The "-G-BND-TR" suffix typically refers to specific packaging details and environmental compliance, such as being RoHS compliant (lead-free). The precise voltage detection threshold and other specifications can be found in the product datasheet.