General Description
The MIC1815 is an inexpensive microprocessor supervisory circuit that monitors power supplies in microprocessor based systems.
The function of these devices is to assert a reset if the power supply drops below a designated reset threshold level. Several different reset threshold levels are available to accommodate 10% or 20% drop in 3.3V powered systems.

Features
• Precision voltage monitor for 10% or 20% drop in 3.3V power supplies
• /RESET remains valid with VCC as low as 1V
• 5µA supply current
• 100ms minimum reset pulse width
• No external components required
• Available in 3-pin SOT-23 package

Applications
• Portable equipment
• Intelligent instruments
• Critical microprocessor power monitoring
• Printers/computers
• Embedded controllers