The SP802MCP is a Supervisory Circuit manufactured by Sipex Corporation. It is designed to monitor the voltage levels of power supplies and provide a reset signal to microprocessors, microcontrollers, and other digital systems when the voltage drops below a certain threshold. This ensures that the system starts up correctly and avoids data corruption or erratic behavior during power-up or brownout conditions.

Applications

• Microprocessor reset: Providing a reliable reset signal to microprocessors during power-up, power-down, and brownout conditions.
• Voltage monitoring: Monitoring power supply voltages in embedded systems, industrial controllers, and consumer electronics.
• Battery monitoring: Detecting low battery conditions in battery-powered devices.
• Power failure detection: Detecting power failures and initiating appropriate shutdown procedures.
• Memory protection: Preventing data corruption in memory devices during voltage fluctuations.

Features

• Precision Voltage Monitoring: Monitors the supply voltage with high accuracy.
• Adjustable Reset Threshold: Allows the user to set the voltage threshold at which the reset signal is asserted.
• Reset Timeout Delay: Provides a minimum reset pulse width to ensure proper microprocessor initialization.
• Active-Low Reset Output: The reset output is active low, compatible with most microprocessor reset inputs.
• Low Supply Current: Consumes very little power, making it suitable for battery-powered applications.
• Small Package: Available in small surface-mount packages, saving board space.

Benefits

• System Stability: Ensures proper system initialization and prevents data corruption during power-up and brownout conditions.
• Reliable Reset Signal: Provides a reliable reset signal to microprocessors, even under noisy power supply conditions.
• Power Savings: Low supply current minimizes power consumption in battery-powered devices.
• Flexibility: Adjustable reset threshold allows the user to customize the voltage monitoring level.
• Ease of Use: Simple to integrate into existing systems with minimal external components.

Technical Specifications: The SP802MCP typically operates from a wide range of supply voltages, typically from 2.5V to 5.5V. The reset threshold voltage is adjustable. The reset timeout delay is usually factory preset. The operating temperature range is typically -40°C to +85°C. It is available in various package options, including SOT-23 and MSOP.