GENERAL DESCRIPTION
The ADM1068 is a configurable supervisory/sequencing device that offers a single-chip solution for supply monitoring and sequencing in multiple supply systems.
The device provides up to eight programmable inputs for monitoring under, over, or out-of-window faults on up to eight supplies. In addition, eight programmable outputs can be used as logic enables. Six of them can also provide up to a 12 V output for driving the gate of an N-channel FET, which can be placed in the path of a supply.

FEATURES
   Complete supervisory and sequencing solution for up to
      8 supplies
   8 supply fault detectors enable supervision of supplies to
      better than 1% accuracy
   4 selectable input attenuators allow supervision:
      Supplies up to 14.4 V on VH
      Supplies up to 6 V on VP1–3
   4 dual-function inputs, VX1–4
      High impedance input to supply fault detector with
         thresholds between 0.573 V and 1.375 V
      General-purpose logic input
   8 programmable output drivers (PDO1–8):
      Open collector with external pull-up
      Push/pull output, driven to VDDCAP or VPn
      Open collector with weak pull-up to VDDCAP or VPn
      Internally charge-pumped high drive for use with external
         N-FET (PDO1–6 only)
   Sequencing engine (SE) implements state machine control of
   PDO outputs:
      State changes conditional on input events
      Enables complex control of boards
      Power-up and power-down sequence control
      Fault event handling
      Interrupt generation on warnings
      Watchdog function can be integrated in SE
      Program software control of sequencing through SMBus
   Device powered by the highest of VP1–3, VH for improved
      redundancy
   User EEPROM: 256 bytes
   Industry-standard 2-wire bus interface (SMBus)
   Guaranteed PDO low with VH, VPn = 1.2 V
   32-lead 7 mm × 7 mm LQFP package

APPLICATIONS
   Central office systems
   Servers/routers
   Multivoltage system line cards
   DSP/FPGA supply sequencing
   In-circuit testing of margined supplies