The XC61GC1802HR is a voltage detector manufactured by Torex Semiconductor Ltd. Voltage detectors, also known as voltage supervisors or reset ICs, are essential components in electronic systems for monitoring the supply voltage and ensuring proper operation. They prevent erratic behavior and data corruption by resetting the system when the voltage drops below a specified threshold.

Applications

• Microcontroller-based systems
• Battery-powered devices
• Power management circuits
• Real-time clocks (RTCs)
• Memory protection

Features

• Low power consumption
• High accuracy detection voltage
• Small package size (SOT-25)
• Built-in hysteresis
• CMOS output

Benefits

• Prevents system malfunction due to undervoltage
• Ensures data integrity
• Extends battery life in portable devices
• Simplifies power management design
• Improves system reliability

Technical Specifications

The XC61GC1802HR has a detection voltage of 1.8V. It features a low quiescent current, typically in the microampere range, to minimize power consumption. The hysteresis is designed to prevent oscillations around the threshold voltage. The CMOS output provides a strong output signal. The device operates over a wide temperature range. Detailed specifications, including the exact quiescent current, hysteresis voltage, and response time, can be found in the Torex Semiconductor datasheet.

When the input voltage drops below the detection threshold, the XC61GC1802HR asserts its output, typically connected to the reset pin of a microcontroller. This forces the microcontroller into a reset state, preventing it from executing incorrect instructions. Once the input voltage rises above the threshold plus the hysteresis, the output is deasserted, allowing the microcontroller to resume normal operation. The hysteresis prevents the device from rapidly switching on and off when the input voltage is near the threshold.