The MIC809LUY is a precision voltage supervisor from Micrel (now Microchip Technology), designed to monitor voltage levels in electronic systems and provide a reset signal to microcontrollers or other critical components when the voltage falls below a specified threshold. This ensures proper system initialization and prevents erroneous operation due to voltage drops.

Applications:

• Microcontroller Reset Circuitry
• Power Supply Monitoring
• Battery-Powered Devices
• Embedded Systems

Features:

• Precision Voltage Monitoring
• Active-Low Reset Output
• Fixed Reset Threshold Voltage
• Internal Hysteresis
• Small Package Size

Benefits:

• Reliable System Operation: Prevents erroneous operation by resetting the system during voltage drops.
• Simplified Design: Requires minimal external components, simplifying circuit design.
• Improved Noise Immunity: Internal hysteresis enhances noise immunity and prevents false triggering.
• Compact Solution: Small package size suitable for space-constrained applications.

Technical Specifications:

The MIC809LUY features a specific threshold voltage (VTH), which is the voltage level at which the reset output is asserted. The reset timeout period (tRP) specifies the duration of the reset signal. The supply voltage range (VSUP) indicates the acceptable operating voltage. The active-low reset output (RESET) is asserted when the supply voltage drops below VTH. The internal hysteresis prevents oscillation around the threshold voltage. The package type (e.g., SOT-23) determines the mounting method.

Consult the device datasheet for complete specifications, application examples, and layout recommendations before using the MIC809LUY in any circuit.