The R3112Q321A-TR-F is a voltage detector IC manufactured by Ricoh Electronic Devices Co., Ltd. This component monitors the supply voltage and generates a reset signal if the voltage drops below a specific threshold. The 'TR' suffix indicates Tape and Reel packaging for automated assembly, while '-F' typically denotes a lead-free finish, compliant with RoHS standards.

Applications

• Microcontroller reset circuits
• Power supply monitoring
• Battery management systems
• Voltage supervision in embedded systems
• Portable electronic devices (e.g., smartphones, tablets, wearables)

Features

• High-accuracy detection voltage: Provides precise voltage monitoring for reliable reset operation.
• Low supply current: Minimizes power consumption, making it suitable for battery-powered applications.
• Small package: Enables compact circuit designs, ideal for space-constrained devices.
• Built-in hysteresis: Prevents output oscillation due to minor voltage fluctuations.
• Open drain output: Offers flexible interfacing with various logic levels.

Benefits

• Improved system reliability: Prevents erratic behavior and data corruption caused by voltage drops.
• Extended battery life: Reduces power consumption in battery-operated devices.
• Simplified circuit design: Integrates essential voltage monitoring functions in a single component.
• Enhanced noise immunity: Ensures stable operation in noisy environments.
• Compliance with environmental standards: The lead-free finish contributes to environmentally friendly products.

Additional Details

The R3112Q321A-TR-F features a detection voltage of 3.2V. It is commonly used to reset a microcontroller when the supply voltage falls below this level, preventing unpredictable behavior. The low quiescent current consumption is a significant advantage in battery-powered applications. The built-in hysteresis prevents unwanted resets due to minor voltage variations. The open-drain output requires an external pull-up resistor to function correctly. The device is usually packaged in a small surface-mount package, such as SOT-23, facilitating high-density board layouts. The operating temperature range is typically -40°C to +85°C. The tape and reel packaging simplifies automated assembly processes, and the lead-free finish ensures compliance with environmental regulations.