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MIC2778 - Voltage Monitor with Adjustable Hysteresis Preliminary Information

Datasheet Summary

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.

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Datasheet preview – MIC2778

Datasheet Details

Part number MIC2778
Manufacturer Micrel Semiconductor
File Size 65.84 KB
Description Voltage Monitor with Adjustable Hysteresis Preliminary Information
Datasheet download datasheet MIC2778 Datasheet
Additional preview pages of the MIC2778 datasheet.

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Full PDF Text Transcription

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MIC2778 Micrel MIC2778 Voltage Monitor with Adjustable Hysteresis Preliminary Information 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. High- and low-voltage thresholds can be adjusted independently, allowing for wide hysteresis. Voltage detection thresholds are accurate to 2%. If the battery voltage falls below the low-voltage threshold, the output (RST) is asserted and latched, preventing system operation until the battery is replaced or recharged. Internal logic prevents the output from chattering due to battery recovery or load removal.
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