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MIC845

Status: End of Life

Features:

  • Extremely low 1µA supply current (typical)
  • 2.55V on chip reference
  • ±2% voltage threshold accuracy
  • Optimized for PDAs, cellular telephones, pagers, and other battery-powered devices
  • Open-drain output can be pulled up to 6V regardless of supply voltage
  • 5-lead SC-70 package
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Device Overview

Summary

The MIC845 is a precision micro-power voltage comparator with an on-chip 2.55V reference voltage source. Intended for voltage monitoring applications, the MIC845 can be used with an external resistor divider to detect a wide range of voltages, or without external resistors to directly monitor voltages with its high input impedance CMOS input. The MIC845 incorporates a voltage reference and comparator with fixed internal hysteresis. When the 2.55V internal threshold is crossed, the output switches polarity. MIC845 is available with a push-pull or open-drain output stage. The push-pull output stage is configured for both active high or active low output; the open-drain output stage is only configured active high. Supply current is extremely low (typically 1µA), making it ideal for portable applications. MIC845 is supplied in Micrel's Teeny™ 5-lead SC- 70 package.

Additional Features
    • Extremely low 1µA supply current (typical)
    • 2.55V on chip reference
    • ±2% voltage threshold accuracy
    • Optimized for PDAs, cellular telephones, pagers, and other battery-powered devices
    • Open-drain output can be pulled up to 6V regardless of supply voltage
    • 5-lead SC-70 package
Parametrics
Name
Value
Temp Range (°C)
-40°C to +85°C
IQ Typical (µA))
1
Vref (V)
2.55
Typical Propagation Delay (ns)
12000
# per Package
1
Operating Voltage Range (V)
2.75 to 5.5

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