Catalog
Power Supply Sequencer and Monitor
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Reset Timeout | Voltage - Threshold | Number of Voltages Monitored | Reset | Type | Supplier Device Package | Mounting Type |
|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments | 85 °C | -40 °C | 32-VFQFN Exposed Pad | 2 µs | Adjustable/Selectable | 8 | Active High/Active Low | Sequencer | 32-VQFN (5x5) | Surface Mount |
Texas Instruments | 85 °C | -40 °C | 32-VFQFN Exposed Pad | 2 µs | Adjustable/Selectable | 8 | Active High/Active Low | Sequencer | 32-VQFN (5x5) | Surface Mount |
Texas Instruments | 85 °C | -40 °C | 32-VFQFN Exposed Pad | 2 µs | Adjustable/Selectable | 8 | Active High/Active Low | Sequencer | 32-VQFN (5x5) | Surface Mount |
Key Features
• Single Supply Voltage: 3.3 VLow Power ConsumptionSequences and Monitors up to Eight Voltage RailsRail Voltages Sampled Every 50 µs With 3.2-mV ResolutionFour Configurable Digital Outputs for Power-On Reset and Other FunctionsConfigurable Rail-Enable Output PolarityFlexible Rail Sequencing: Timeline (ms), Parent Rail Regulation Window, Parent Rail Achieving Defined ThresholdUnder- and Overvoltage Thresholds: Settable Per-RailRegulation Expiration Time: Settable Per-RailFlexible Rail Shutdown: Parent Rail Shutdown Can Shut Down Child Rails, Independent Rail ConfigurationPer-Rail Alarm Conditions, With Timestamp: Under- and Overvoltage Glitch, Sustained Under- and/or Overvoltage, Rail Did Not StartI2C Interface for Configuration and MonitoringMicrosoft™ Windows™ GUI for Configuration and MonitoringAPPLICATIONSTelecommunications SwitchesServersNetworking EquipmentTest EquipmentAny System Requiring Sequencing of Multiple Voltage RailsTMS320 is a trademark of Texas Instruments.Microsoft, Windows are trademarks of Microsoft Corporation.All other trademarks are the property of their respective owners.Single Supply Voltage: 3.3 VLow Power ConsumptionSequences and Monitors up to Eight Voltage RailsRail Voltages Sampled Every 50 µs With 3.2-mV ResolutionFour Configurable Digital Outputs for Power-On Reset and Other FunctionsConfigurable Rail-Enable Output PolarityFlexible Rail Sequencing: Timeline (ms), Parent Rail Regulation Window, Parent Rail Achieving Defined ThresholdUnder- and Overvoltage Thresholds: Settable Per-RailRegulation Expiration Time: Settable Per-RailFlexible Rail Shutdown: Parent Rail Shutdown Can Shut Down Child Rails, Independent Rail ConfigurationPer-Rail Alarm Conditions, With Timestamp: Under- and Overvoltage Glitch, Sustained Under- and/or Overvoltage, Rail Did Not StartI2C Interface for Configuration and MonitoringMicrosoft™ Windows™ GUI for Configuration and MonitoringAPPLICATIONSTelecommunications SwitchesServersNetworking EquipmentTest EquipmentAny System Requiring Sequencing of Multiple Voltage RailsTMS320 is a trademark of Texas Instruments.Microsoft, Windows are trademarks of Microsoft Corporation.All other trademarks are the property of their respective owners.
Description
AI
The UCD9080 power-supply sequencer controls the enable sequence of up to eight independent voltage rails and provides four general-purpose digital outputs. 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 UCD9080 monitors the voltage rails independently at more than a 20-kHz rate and has a high degree of rail sequence and rail error-response configurability. 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 UCD9080 monitors can be configured to shut down a user-defined set of other rails, and alarm conditions are monitored on a per-rail basis.
Figure 1 shows the UCD9080 power-supply sequencer in a typical application.
The UCD9080 power-supply sequencer controls the enable sequence of up to eight independent voltage rails and provides four general-purpose digital outputs. 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 UCD9080 monitors the voltage rails independently at more than a 20-kHz rate and has a high degree of rail sequence and rail error-response configurability. 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 UCD9080 monitors can be configured to shut down a user-defined set of other rails, and alarm conditions are monitored on a per-rail basis.
Figure 1 shows the UCD9080 power-supply sequencer in a typical application.