The LTC1235CSW from Linear Technology is a sophisticated microprocessor supervisory circuit, designed to ensure the reliable operation of microprocessor systems. This component provides a comprehensive suite of monitoring functions crucial for the management of system integrity. With its compact surface-mount package, it is an ideal choice for space-constrained applications where performance and reliability cannot be compromised.

Key Features:

• Power Monitoring: The LTC1235CSW offers precision monitoring of the power supply with a 4.65V threshold, ensuring that the system operates within safe voltage levels. This feature is essential for preventing microprocessor malfunction due to inadequate power supply.
• Reset Output: A reset output with a 200ms minimum pulse width provides a reliable reset signal to the microprocessor during power-up, power-down, and brownout conditions. This ensures the system starts in a known state, enhancing system stability.
• Watchdog Timer: A built-in watchdog timer with a 1.6-second timeout helps detect and recover from software failures. If the microprocessor fails to provide a periodic signal to the watchdog input, the LTC1235CSW will issue a system reset, facilitating a safe recovery.
• Backup Battery Switchover: An automatic backup battery switchover feature maintains system memory and real-time clock operations during power failures, without the need for an external diode.
• Low Power Consumption: The device operates with a low supply current, making it suitable for power-sensitive applications.

Applications:

The LTC1235CSW is versatile and can be used in a wide range of applications, including:

• Microprocessor systems
• Computers and controllers
• Portable/battery-powered equipment
• Industrial systems

Technical Specifications:

• Supply Voltage Range: 4.75V to 5.5V
• Operating Temperature Range: 0°C to 70°C
• Packaging: 16-pin SW package

With its robust feature set, the LTC1235CSW provides critical protection and monitoring to enhance the reliability and longevity of your microprocessor-based systems.