The BD53E28G-MTR is a voltage detector IC manufactured by Rohm Semiconductor. It is designed to monitor voltage levels and provide a reset signal when the voltage drops below a specific threshold. This function is crucial for protecting microcontrollers, CPUs, and other sensitive electronic components from malfunctioning or being damaged due to undervoltage conditions during power-up, power-down, or brownout events.

Applications

• Microcontroller Reset Circuits: Provides a reliable reset signal to ensure proper startup and prevent erratic behavior.
• CPU Voltage Monitoring: Protects the CPU from operating at voltages below its minimum specification, which can cause errors or damage.
• Logic Circuit Supervision: Monitors the power supply voltage to digital logic circuits to maintain data integrity.
• Battery-Powered Devices: Monitors battery voltage to prevent deep discharge, extending battery life and preventing damage to the battery.
• Power Management Systems: Integrated into power management circuits for system-level voltage supervision and reset functionality.

Features

• Low Current Consumption: Minimizes power drain, making it suitable for battery-powered and energy-efficient applications.
• High-Accuracy Detection Voltage: Provides a precise and reliable reset signal at the specified voltage threshold.
• Built-in Hysteresis: Prevents output oscillation due to noise or minor voltage fluctuations, ensuring stable operation.
• Open Drain Output: Offers flexibility in circuit design and interface with other components.
• Small Package Size: Suitable for compact electronic devices where board space is limited.

Benefits

• Improved System Reliability: Prevents data corruption and system crashes due to voltage fluctuations and undervoltage conditions.
• Simplified Circuit Design: Reduces the need for external components, simplifying the design process and saving board space.
• Extended Battery Life: Low current consumption contributes to longer battery life in portable devices.
• Enhanced System Protection: Protects sensitive components from damage caused by undervoltage conditions, improving overall system durability.
• Cost-Effective Solution: Provides a reliable voltage monitoring solution at a competitive price.

Additional Details

The BD53E28G-MTR features a detection voltage of 2.8V, as indicated by the "28" in the part number. The "-MTR" suffix typically indicates tape and reel packaging for automated assembly. The device operates with a supply voltage range of approximately 1.5V to 5.5V. The open-drain output requires an external pull-up resistor. When the supply voltage drops below the 2.8V threshold, the output goes low, signaling a reset condition. When the voltage rises above the threshold plus the hysteresis voltage, the output returns high. The operating temperature range is generally wide. For precise specifications, including the specific hysteresis voltage, current consumption, and temperature ratings, consult the Rohm Semiconductor datasheet for the BD53E28G-MTR. This IC is commonly used in a wide range of electronic devices where reliable voltage monitoring and reset functionality are essential.