General Description

The MIC2778 is a voltage monitor—uniquely designed to detect two separate voltage thresholds—combined with a delay generator and logic. It is designed for monitoring the battery supply of portable digital systems, particularly PDAs, pagers, and cellular telephones.

Features

• Optimized for PDAs, cellular telephones, pagers, and other battery-powered devices

• Independently adjustable high- and low-voltage thresholds

• Internal logic prevents battery-voltage-fluctuation chatter

• High ±2 voltage threshold accuracy; 1 available

• Built in 140ms (minimum) delay deglitches output

• Extremely low 1µA typical supply current

• For applications not requiring built-in delay, see MIC841

• Immune to brief power supply transients

• 5-lead SOT-23 package

Applications

• PDAs

• Pagers

• Cordless phones

• Consumer electronics

• Embedded controllers

• Personal electronics