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Power Supply Sequencer and Monitor

Same as: UCD9080RHBRG4   This part number is identical to the part number listed above. You can only order quantities of the part number listed above.

Replaced by: UCD9081RHBR

NEW - Custom reel may be available
Inventory: 18,000

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
VQFN (RHB) | 32 3,000 | LARGE T&R
Custom reel may be available
-40 to 85
Package | Pins VQFN (RHB) | 32
Package qty | Carrier 3,000 | LARGE T&R
Custom reel may be available
Operating temperature range (°C) -40 to 85
View TI packaging information

Features for the UCD9080

  • 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
    • 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.

Description for the UCD9080

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.


Qty Price (USD)
1-99 5.971
100-249 4.868
250-999 3.826
1,000+ 3.245

Additional package qty | carrier options

Package qty | Carrier 250 | SMALL T&R
Inventory 4,000
Qty | Price (USD) 1ku | 3.634 1-99 6.687 100-249 5.451 250-999 4.284 1,000+ 3.634