LTC693C Datasheet - Linear Technology

DESCRIPTION
The LTC®692/LTC693 provide complete power supply monitoring and battery control functions for microprocessor reset, battery backup, CMOS RAM write protection, power failure warning and watchdog timing. A precise internal voltage reference and comparator circuit monitor the power supply line. When an out-of-tolerance condition occurs, the reset outputs are forced to active states and the chip enable output unconditionally write-protects external memory. In addition, the RESET output is guaranteed to remain logic low even with VCC as low as 1V.
   
FEATURES
■ UL Recognized
■ Guaranteed Reset Assertion at VCC = 1V
■ 1.5mA Maximum Supply Current
■ Fast (35ns Maximum) Onboard Gating of RAM Chip
    Enable Signals
■ 4.40V Precision Voltage Monitor
■ Power OK/Reset Time Delay: 200ms or Adjustable
■ Minimum External Component Count
■ 1μA Maximum Standby Current
■ Voltage Monitor for Power Fail or Low-Battery
    Warning
■ Thermal Limiting
■ Performance Specifi ed Over Temperature
■ Superior Upgrade for MAX690 Family
■ SO8 and SO16 Packaging
   
APPLICATIONS
■ Critical μP Power Monitoring
■ Intelligent Instruments
■ Battery-Powered Computers and Controllers
■ Automotive Systems