The MIC803-26D3VC3TR is a precision voltage supervisor from Micrel (now Microchip Technology), designed to monitor voltage levels in electronic systems. It provides a reset output when the monitored voltage falls below a specified threshold, ensuring proper system initialization and preventing data corruption. This device is commonly used in microcontroller-based systems, memory circuits, and other applications requiring reliable voltage monitoring.

Applications:

• Microcontroller reset circuits
• Memory protection
• Power-on reset (POR)
• Brown-out protection
• Voltage monitoring in embedded systems

Features:

• Precision Voltage Threshold: Accurate monitoring of voltage levels.
• Low Supply Current: Minimizes power consumption.
• Open-Drain Output: Flexible interface with microcontrollers and other logic devices.
• Active-Low Reset Output: Provides a clear reset signal when the voltage falls below the threshold.
• Small Package: Compact package saves board space.
• RoHS Compliant: Environmentally friendly.
• Wide Operating Temperature Range: Suitable for use in diverse environmental conditions.

Benefits:

• Reliable System Operation: Ensures proper system reset and prevents data corruption during voltage sags or power-up.
• Extended Battery Life: Low supply current contributes to longer battery life in portable devices.
• Simplified Design: Integrates voltage monitoring and reset functionality into a single device.
• Reduced Board Space: Small package allows for denser circuit layouts.
• Enhanced System Protection: Protects against brown-out conditions that can damage sensitive components.

Additional Details:

The MIC803-26D3VC3TR has a fixed threshold voltage, as indicated by the "26" in the part number, corresponding to 2.63V. The open-drain output requires a pull-up resistor. The reset output remains low as long as the input voltage is below the threshold. The device is typically used in systems where a clean power-on reset is critical for reliable operation. It is available in a SOT-23 package. Proper decoupling is recommended to minimize noise and ensure accurate voltage monitoring.