AS1918 SUPERVISOR IC

Microprocessor Supervisory Circuits with Manual Reset and Watchdog

The AS1918 (open drain output with active low reset) is a supervisor with manual reset and watchdog. Reset thresholds are factory programmable between 1.8V and 3.6V in steps of 100mV. The duration of the reset is fixed at 215ms, watchdog timeout is 1.5s. The device operates down to 1V.

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KEY FEATURES
  • No external components
  • Integrated watchdog
  • KEY BENEFITS
    • Small BOM
    • Blocks runaway code
    AS1918 APPLICATIONS
    • Portable & Battery Powered Systems
    • Embedded Controllers
    • Intelligent Instruments
    • Automotive Systems
    • Critical CPU Monitoring
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AS1918 PRODUCT FACTS

Supervised voltages [V (IN1)]1.58 to 3.6
Supervised voltages [V (IN2)]
Supervised voltages [V (IN3)]
Supervised voltages [V (IN4)]
Inputs1
Push/Pull active low
Push/Pull active high
Open-Drain
Watchdog
Man. reset
Supply current [μA]5.5
Supply voltage [V]1.0 to 3.6
PackageSOT23-5