描述 The UCD9081 power-supply sequencer controls the enable sequence of up to eight independent voltage rails and provides four general-purpose digital outputs (GPO). The device operates from a 3.3-V supply, provides 3.2-mV resolution of voltage rails, and requires no external memory or clock. The UCD9081 monitors the voltage rails independently and has a high degree of rail sequence and alarm response options. The sequencing of rails can be based on timed events or on timed events in conjunction with other rails achieving regulation or a voltage threshold. In addition, each rail is monitored for undervoltage and overvoltage glitches and thresholds. Each rail the UCD9081 monitors can be configured to shut down a user-defined set of other rails and GPOs, and alarm conditions are monitored on a per-rail basis.特性Single Supply Voltage: 3.3 VLow Power Consumption: 3-mA Nominal Supply CurrentSequences and Monitors Eight Voltage RailsRail Voltages Sampled With 3.2-mV ResolutionInternal or External Voltage ReferenceFour Configurable Digital Outputs for Power-On-Reset and Other Functions Configurable Digital Output PolarityFlexible Rail Sequencing Based on Timeline (ms), Parent Rail Regulation Window, or Parent Rail Achieving Defined ThresholdIndependent Under- and Overvoltage Thresholds Per RailConfigurable Regulation Expiration Times Per RailFlexible Alarm Processing: Ignore, Log Only, Retry n Times, Retry Continuously, Sequence, Parent Rail Can Shutdown Child RailsAlarm Conditions Logged With Timestamp: Under- and Overvoltage Glitch, Sustained Under- and Overvoltage, Rail Did Not StartOn-Chip Flash for Storing User DataError Logging to Flash for System Failure AnalysisI2C™ Interface for Configuration and MonitoringMicrosoft Windows™ GUI for Configuration and MonitoringAPPLICATIONSTelecommunications SwitchesServersNetworking EquipmentTest EquipmentIndustrialAny System Requiring Sequencing of Multiple Voltage RailsAll other trademarks are the property of their respective owners