MICROCHIP Supervisory Circuit, 3V Threshold, SOT-23-3

The MICROCHIP Voltage Supervisory Circuit is designed to maintain a microcontroller in a reset state until the system voltage reaches and stabilises at the proper level. It provides essential protection against brown-out conditions, ensuring your system remains safe when the supply voltage drops below the required operating threshold.

Featuring an open-drain output and an active-low reset pin, this device asserts the RESET signal whenever the VDD pin voltage falls below the trip-point. It holds the RESET state for a typical duration of 350ms, guaranteeing a stable restart. The device guarantees RESET operation down to VCC = 1.0V, offering reliable performance for critical applications.

Delivering precision monitoring for 3V, 3.3V, and 5V systems, it achieves an accuracy of ±125mV for 5V systems and ±75mV for 3V systems over temperature. With a low typical operating current of just 45μA, it is highly efficient for continuous monitoring tasks.

Key Features

• Open drain output with active-low RESET
• Precision monitoring for 3V, 3.3V, and 5V systems
• 350ms typical reset delay time
• RESET valid down to VCC = 1.0V
• High threshold accuracy over temperature
• Low 45μA typical operating current
• Operating temperature range: -40°C to +85°C

Please note: This is an ESD sensitive device; appropriate precautions must be taken while handling.