The CAT811LTBI-T is a supervisory circuit manufactured by Catalyst Semiconductor. These circuits are designed to monitor the voltage levels of power supplies in microprocessor-based systems and provide a reset signal when the voltage drops below a certain threshold. This ensures that the microprocessor starts up in a known good state and prevents erratic behavior due to insufficient voltage.

Applications:

• Microprocessor Systems: Used to monitor the power supply voltage of microprocessors and microcontrollers.
• Embedded Systems: Integrated into embedded systems to ensure reliable operation during power-up and power-down sequences.
• Industrial Control Systems: Used in industrial control equipment to monitor and protect critical voltage levels.
• Automotive Electronics: Employed in automotive electronic systems to ensure proper operation during voltage fluctuations.
• Consumer Electronics: Found in various consumer electronic devices to provide reliable power supply monitoring.
• Medical Devices: Utilized in medical equipment to ensure stable and reliable operation.

Features:

• Precision Voltage Monitoring: Accurately monitors the power supply voltage.
• Reset Output: Provides a reset signal when the voltage drops below the specified threshold.
• Active-Low Reset: Features an active-low reset output.
• Fixed Threshold Voltage: Operates with a fixed threshold voltage (2.88V).
• Small Package: Available in a small SOT-23 package for space-constrained applications.
• Low Supply Current: Requires minimal supply current for efficient operation.

Benefits:

• Improved System Reliability: Ensures reliable system operation by preventing erratic behavior due to low voltage conditions.
• Simplified Design: Simplifies system design by providing a pre-configured voltage monitoring solution.
• Reduced Component Count: Reduces the number of components required for voltage monitoring, saving board space and cost.
• Enhanced System Protection: Protects the microprocessor and other critical components from damage due to undervoltage conditions.
• Efficient Power Usage: Low supply current ensures efficient power usage, prolonging battery life in portable applications.
• Compact Footprint: Small SOT-23 package allows for easy integration into space-constrained designs.

Additional Details:

The CAT811LTBI-T is designed to provide a reliable reset signal during power-up, power-down, and brownout conditions. It has a typical reset timeout delay to prevent false resets. The operating temperature range is typically -40°C to +85°C, making it suitable for a wide range of applications. The device requires minimal external components, further simplifying the design process.