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UCD9081 Status: ACTIVE

Power Supply Sequencer and Monitor with Non-Volatile Error Logging


      
         
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 UCD9081
No. of Supervisors8  
Fan Control (# Channels)4  
# of supplies monitored8  
# of supplies sequenced8  
IDD(Typ)(uA)3000  
Pin/Package32QFN  
RatingCatalog  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • UCD90120: 12-Channel Sequencer and System Health Monitor
  • UCD9080: Power Supply Sequencer and Monitor
  • TPS54620: 4.5V to 17V Input, 6A Synchronous Step Down SWIFT™ Converter

Product Information

Features

  • Single Supply Voltage: 3.3V
  • Low Power Consumption: 3mA Nominal Supply Current
  • Sequences and Monitors Eight Voltage Rails
  • Rail Voltages Sampled With 3.2-mV Resolution
  • Internal or External Voltage Reference
  • Four Configurable Digital Outputs for Power-On Reset and Other Functions
  • Configurable Digital Output Polarity
  • Flexible Rail Sequencing Based On Timeline (ms), Parent Rail Regulation Window, Or Parent Rail Achieving Defined Threshold
  • Independent Under- and Overvoltage Thresholds Per Rail
  • Configurable Regulation Expiration Times Per Rail
  • Flexible Alarm Processing: Ignore, Log Only, Retry n Times, Retry Continuously, Sequence, Parent Rail Can Shutdown Child Rails
  • Alarm Conditions Logged With Timestamp: Under- and Overvoltage Glitch, Sustained Under- and Overvoltage, Rail Did Not Start
  • On-chip Flash for Storing User Data
  • Error Logging to Flash for System Failure Analysis
  • I2C Interface for Configuration and Monitoring
  • MicrosoftWindows GUI for Configuration and Monitoring
  • APPLICATIONS
    • Telecommunications Switches
    • Servers
    • Networking Equipment

View All Features in Datasheet

Description

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.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
UCD9081RHBRACTIVE-40 to 852.95 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&R
UCD9081RHBRG4ACTIVE-40 to 852.95 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&R
UCD9081RHBTACTIVE-40 to 853.25 | 1kuQFN (RHB) | 32 View 250 | SMALL T&RPurchase Samples
UCD9081RHBTG4ACTIVE-40 to 853.25 | 1kuQFN (RHB) | 32 View 250 | SMALL T&RPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 9:49 AM GMT, 24 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCD9081RHBR
AsiaWPI >1k
WorldwideDigiKey >1k
TI Lead Time*: 20 WeeksUCD9081RHBRG4
WorldwideDigiKey  Available
TI Lead Time*: 16 WeeksUCD9081RHBT
AmericasArrow 750
EuropeAvnet-SILICA 1k
WorldwideDigiKey  Available
TI Lead Time*: 16 WeeksUCD9081RHBTG4
WorldwideDigiKey  Available
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
UCD9081RHBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCD9081RHBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCD9081RHBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCD9081RHBTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for UCD9081 Help

Datasheet

Application Notes

View Application Notes for Supervisory Circuits(Voltage Supervisors)

User Guides

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Tools & Software

NamePart # Company Tool / Software Type
UCD9081EVM Evaluation ModuleUCD9081EVMTexas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UCD90120 12-Channel Sequencer and System Health Monitor POWER MANAGEMENT-SUPERVISORY CIRCUITS(VOLTAGE SUPERVISORS) TI customers also evaluated this product.
UCD9080 Power Supply Sequencer and Monitor FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS-FUSION DIGITAL POWER(TM) MONITORING AND SEQUENCING TI customers also evaluated this product.
TPS54620 4.5V to 17V Input, 6A Synchronous Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.

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