General Description
The MIC803 is a single-voltage supervisor with open-drain reset
output that provides accurate power supply monitoring and reset
generation in microprocessor based systems. The function of the
device is to assert a reset signal if the power supply voltage
drops below the Reset Threshold voltage, and retain this reset for
the Reset Timeout Period once the power supply increases above the
Reset Threshold voltage.
The MIC803 consumes only 4.5μA of supply current and offers three
reset delay periods of 20ms, 140ms and 1120ms (min). It features
factory programmed reset threshold levels from 2.63V to 4.63V to
accommodate 3.0V, 3.3V, and 5.0V power supplies. It is available in
the compact 3-pin SC-70 and SOT-23 packages.
Features
• 4.5μA supply current (typical) at 3.6V
• Open-drain /RESET output
• /RESET remains valid with VCC as low as 1V
• 20ms, 140ms, or 1120ms (minimum) reset timeout options
• 2.63V to 4.63V preset voltage threshold options
• 2.5% voltage threshold accuracy over temperature
• 3-pin SC70-3 package (2.0mm × 2.1mm)
• 3-pin SOT-23 package (2.3mm × 2.9mm)
• -40˚C to +125˚C junction temperature range
Applications
• Critical microcomputer power monitoring
• Portable equipment
• Solid state drives
• Printers/computers
• Embedded controllers
