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TI(德州仪器) UCD9080
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  • TI(德州仪器) UCD9080
  • TI(德州仪器) UCD9080
  • TI(德州仪器) UCD9080
  • TI(德州仪器) UCD9080
  • TI(德州仪器) UCD9080
  • TI(德州仪器) UCD9080
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UCD9080

UCD9080

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电源序列发生器和监控器

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  • 封装 | 引脚 | 尺寸

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.

  • Single Supply Voltage: 3.3 V
  • Low Power Consumption
  • Sequences and Monitors up to Eight Voltage Rails
  • Rail Voltages Sampled Every 50 µs With 3.2-mV Resolution
  • Four Configurable Digital Outputs for Power-On Reset and Other Functions
  • Configurable Rail-Enable Output Polarity
  • Flexible Rail Sequencing: Timeline (ms), Parent Rail Regulation Window, Parent Rail Achieving Defined Threshold
  • Under- and Overvoltage Thresholds: Settable Per-Rail
  • Regulation Expiration Time: Settable Per-Rail
  • Flexible Rail Shutdown: Parent Rail Shutdown Can Shut Down Child Rails, Independent Rail Configuration
  • Per-Rail Alarm Conditions, With Timestamp: Under- and Overvoltage Glitch, Sustained Under- and/or Overvoltage, Rail Did Not Start
  • I2C Interface for Configuration and Monitoring
  • Microsoft™ Windows™ GUI for Configuration and Monitoring
  • APPLICATIONS
    • Telecommunications Switches
    • Servers
    • Networking Equipment
    • Test Equipment
    • Any System Requiring Sequencing of Multiple Voltage Rails

TMS320 is a trademark of Texas Instruments.
Microsoft, Windows are trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.

Supply voltage (min) (V)3
Number of supplies monitored8
Supply voltage (max) (V)3.6
Iq (typ) (mA)4.5
Number of sequenced outputs8
RatingCatalog
Operating temperature range (°C)-40 to 85
VQFN (RHB)3225 mm² 5 x 5
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