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