The BD53E36GTR is a voltage detector IC manufactured by Rohm Semiconductor, belonging to the PMIC (Power Management Integrated Circuit) supervisor category. This IC is designed to monitor the supply voltage and generate a reset signal when the voltage drops below a predetermined threshold. This functionality is crucial for preventing malfunctions and data corruption in microcontrollers and other digital circuits during voltage sags or brownout conditions, ensuring system stability and reliable performance.

Applications

• Microcontroller Systems: Provides reliable reset functionality during power-up, power-down, and brownout conditions, preventing erratic operation.
• Memory Protection: Protects data in volatile memory (RAM) by triggering a reset if the supply voltage drops below a critical level.
• Portable Electronics: Used in battery-powered devices such as smartphones, tablets, and wearable devices to monitor battery voltage and prevent low-voltage operation.
• Industrial Automation: Ensures stable and reliable operation of control systems in industrial environments by providing voltage monitoring.
• Automotive Electronics: Monitors voltage levels in automotive electronic control units (ECUs) and other critical systems to maintain safe and reliable operation.

Features

• High-Accuracy Voltage Detection: Offers precise voltage monitoring with a typical accuracy of ±1%.
• Low Current Consumption: Minimizes power usage, making it suitable for battery-powered and energy-conscious applications.
• Open Drain Output: Provides flexibility in interfacing with various microcontroller architectures.
• Compact Package: Available in small surface-mount packages, saving valuable board space.
• Hysteresis: Includes hysteresis to prevent oscillations or chattering of the reset signal due to voltage noise.

Benefits

• Improved System Stability: Prevents system crashes and ensures reliable operation of electronic systems.
• Data Protection: Protects data integrity in volatile memory during voltage drops.
• Extended Battery Life: Low power consumption contributes to longer battery life in portable devices.
• Simplified Design: Integrates voltage monitoring and reset functionality into a single chip, simplifying circuit design.
• Enhanced Reliability: Provides robust voltage monitoring in a wide range of operating conditions.

Additional Details

The BD53E36GTR typically operates within a supply voltage range of 1.6V to 5.5V. The reset threshold voltage is fixed and preset to a specific level, depending on the application requirements. The operating temperature range generally spans from -40°C to +85°C. The output is an open-drain type, requiring an external pull-up resistor. The built-in hysteresis helps prevent false triggering of the reset signal caused by minor voltage fluctuations or noise.