GENERAL DESCRIPTION
The ADM1168 Super Sequencer® is a configurable supervisory/sequencing device that offers a single-chip solution for supply monitoring and sequencing in multiple supply systems.
The device also provides up to eight programmable inputs for monitoring undervoltage faults, overvoltage faults, or out-of-window faults on up to eight supplies. In addition, eight programmable outputs can be used as logic enables. Six of these programmable outputs can also provide up to a 12 V output for driving the gate of an NFET that can be placed in the path of a supply.

FEATURES
   Complete supervisory and sequencing solution for up to
      8 supplies
   16 event deep black box nonvolatile fault recording
   8 supply fault detectors enable supervision of supplies to
      <0.5% accuracy at all voltages at 25°C
      <1.0% accuracy across all voltages and temperatures
   4 selectable input attenuators allow supervision of supplies to
      14.4 V on VH
      6 V on VP1 to VP3 (VPx)
   4 dual-function inputs, VX1 to VX4 (VXx)
      High impedance input to supply fault detector with
         thresholds between 0.573 V and 1.375 V
      General-purpose logic input
   8 programmable driver outputs, PDO1 to PDO8 (PDOx)
      Open-collector with external pull-up
      Push/pull output, driven to VDDCAP or VPx
      Open-collector with weak pull-up to VDDCAP or VPx
      Internally charge-pumped high drive for use with external
         NFET (PDO1 to PDO6 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 VPx, VH for improved
      redundancy
   User EEPROM: 256 bytes
   Industry-standard 2-wire bus interface (SMBus)
   Guaranteed PDO low with VH, VPx = 1.2 V
   Available in 32-lead, 7 mm × 7 mm LQFP

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