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LM3881

PinoutSpecificationsInput Min Voltage2.7 VoltInput Max Voltage5.5 VoltNumber of Regulators Able to Sequence3Power DownYesPower UpYesAbility to CascadeYesOn/Off PinYesRegTypeSequencerTemperature Max125 deg CTemperature Min-40 deg CAutomotive Selection GuideYes View Using CatalogDescriptionThe LM388...

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SeekIC No. : 004395503 Detail

LM3881: PinoutSpecificationsInput Min Voltage2.7 VoltInput Max Voltage5.5 VoltNumber of Regulators Able to Sequence3Power DownYesPower UpYesAbility to CascadeYesOn/Off PinYesRegTypeSequencerTemperature Max1...

LM3881 Data Sheet

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Part Number:
LM3881
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Pinout




Specifications

Input Min Voltage2.7 Volt
Input Max Voltage5.5 Volt
Number of Regulators Able to Sequence3
Power DownYes
Power UpYes
Ability to CascadeYes
On/Off PinYes
RegTypeSequencer
Temperature Max125 deg C
Temperature Min-40 deg C
Automotive Selection GuideYes
View Using Catalog



Description

The LM3881 Power Sequencer offers the easiest method to control power up and power down of multiple power supplies (switching or linear regulators). By staggering the startup sequence, it is possible to avoid latch conditions or large in-rush currents that can affect the reliability of the system.

Available in MSOP-8 package, the Power Sequencer contains a precision enable pin and three open drain output flags. Upon enabling the LM3881, the three output flags will sequentially release, after individual time delays, permitting the connected power supplies to startup. The output flags will follow a reverse sequence during power down to avoid latch conditions. Time delays are defined using an external capacitor and the output flag states can be inverted by the user.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM3881MM CMOS7 0 16561 0 0 954000 4 270700104
LM3881MME CMOS7 0 16561 0 0 954000 4 270700104
LM3881MMX CMOS7 0 16561 0 0 954000 4 270700104

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Application Notes

Title Size in Kbytes Date
AN-1785: Application Note 1785 LM3881 Power Sequencer Evaluation Board 608 Kbytes 30-Jan-08 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

More Application Notes

Title Size in Kbytes Date
AN-1677: Application Note 1677 LM1771 and LM3880 Based FPGA Power Supply Reference Design 177 Kbytes 14-Jan-08 Download
AN-1603: Application Note 1603 LM274X Reference Designs 431 Kbytes 6-Dec-07 Download
AN-1603 (Chinese): Application Note 1603 LM274X Reference Designs
 482 Kbytes   640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1491: Application Note 1491 LM3880 Power Sequencer Demo Board 1703 Kbytes 30-Nov-06 Download
AN-1192: Application Note 1192 Overture™ Series High Power Solutions 548 Kbytes 15-Jun-04 Download
AN-898: Application Note 898 Audio Amplifiers Utilizing: SPiKe Protection 1412 Kbytes 20-Sep-02 Download
AN-898 (Japanese): Application Note 898 Audio Amplifiers Utilizing: SPiKe Protection
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">		 249 Kbytes  

If you have trouble printing or viewing PDF file(s), see Printing Problems.




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