The ICL7665 is a micropower undervoltage detector manufactured by Intersil Corporation. This device is designed to monitor a voltage level and provide an output signal when the voltage falls below a predefined threshold. It's commonly used to prevent system malfunctions or data corruption due to low voltage conditions.

Applications

• Battery monitoring in portable devices to prevent deep discharge.
• Power supply monitoring in electronic equipment to detect voltage drops.
• Microprocessor reset circuits to ensure proper initialization after a power interruption.
• Data protection in memory systems to prevent data loss during brownout conditions.

Features

• Low quiescent current.
• Precise voltage threshold.
• Open-drain output.
• Wide operating voltage range.

Benefits

• Extended battery life in portable applications.
• Reliable detection of undervoltage conditions.
• Easy interface with microprocessors and other digital systems.
• Protection against data loss and system malfunctions.

Additional Details

The ICL7665's threshold voltage is typically factory-trimmed to a specific value. The open-drain output requires a pull-up resistor. The datasheet specifies the quiescent current, threshold accuracy, and operating temperature range. This device is available in small packages like SOT-23, making it suitable for space-constrained applications.