The RN5RZ28BA-TLS is a voltage detector IC manufactured by Ricoh. This device is designed to monitor the voltage level of a power supply and generate a reset signal when the voltage drops below a specified threshold. It is commonly used in microprocessor-based systems, memory devices, and other electronic circuits to ensure proper operation and prevent data corruption during undervoltage conditions.

Applications

• Microprocessor reset circuits
• Memory protection
• Power supply monitoring
• Battery-powered devices

Features

• High-accuracy voltage detection
• Low supply current
• Small package size (SOT-23)
• Built-in hysteresis
• Open drain output

Benefits

• Ensures reliable system operation during undervoltage conditions
• Reduces power consumption in battery-powered applications
• Saves board space due to compact package
• Provides stable reset signal due to hysteresis
• Offers flexible interface options with external components

Additional Details

The RN5RZ28BA-TLS voltage detector IC features a high-accuracy voltage detection circuit that precisely monitors the input voltage. When the voltage drops below the preset threshold, the IC activates its output, typically a low signal, to indicate an undervoltage condition. This reset signal is used to reset the microprocessor or disable other critical circuits to prevent malfunctions or data loss. The high accuracy of the voltage detection ensures that the reset signal is generated reliably and consistently.

The low supply current of the RN5RZ28BA-TLS minimizes power consumption, making it suitable for battery-powered applications where extending battery life is essential. The small SOT-23 package allows for easy integration into space-constrained designs. The built-in hysteresis feature prevents the output from oscillating when the input voltage is near the threshold level, ensuring a stable and clean reset signal.

The RN5RZ28BA-TLS has an open drain output, which allows for flexible connection to other circuits. An external pull-up resistor is typically used to set the output voltage level. The threshold voltage for this specific part number is 2.8V. The device operates over a wide temperature range, typically from -40°C to +85°C, making it suitable for various environmental conditions.

The RN5RZ28BA-TLS is commonly used in applications such as microprocessor reset circuits, where it monitors the power supply voltage and resets the microprocessor if the voltage drops below the safe operating level. It is also used in memory protection circuits to prevent data corruption during power failures or undervoltage conditions. The RN5RZ28BA-TLS is a reliable and cost-effective solution for voltage detection and reset generation in a wide range of electronic systems.