LM3880 - Power Sequencer
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Application Notes Knowledge Base

Features
Easiest method to sequence rails
Power up and power down control
Input voltage range of 2.7V to 5.5V
Small footprint SOT23-6
Low quiescent current of 25 µA
Standard timing options available
Customization of timing and sequence available through factory programmability
LM3880Q is AEC-Q100 Grade 1 qualified and is manufactured on an Automotive Grade Flow

General Description


The LM3880 Power Sequencer offers the easiest method to control power up and power down of multiple power supplies (switchers or linear regulators). More...


Applications


Multiple supply sequencing
Microprocessor / Microcontroller sequencing
FPGA sequencing
Automotive
  Typical Application
click for larger image


ParametersValues
Input Min Voltage 2.7 Volt
Input Max Voltage 5.5 Volt
Number of Regulators Able to Sequence 3
Power Down Yes
Power Up Yes
Ability to Cascade Yes
On/Off Pin Yes
RegType Sequencer
Temperature Max 125 deg C
Temperature Min -40 deg C
AEC Q-100 Automotive Grade 1
Automotive Yes


Typical Performance


click for larger image


  Also Recommended
LM3881Timing Cap
Additional Resources
Application Notes


Block Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM3880/LM3880Q Power Sequencer 285
Kbytes
1-May-08 Download
LM3880/LM3880Q Power Sequencer (Japanese)
322 Kbytes   Download

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


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM3880EVALPower SequencerFull productionN/A
 
Buy Now
1+$30.001-
8 weeksN/A
LM3880QMFE-1AASOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
500+$0.86reel
of
250
F27A
XTT
8 weeksN/A
LM3880QMFE-1ABSOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
500+$0.86reel
of
250
F28A
XTT
8 weeksN/A
LM3880QMFE-1ACSOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
500+$0.86reel
of
250
F29A
XTT
8 weeksN/A
LM3880QMFE-1ADSOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
500+$0.86reel
of
250
F30A
XTT
8 weeksN/A
LM3880QMFE-1AESOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
500+$0.86reel
of
250
F24A
XTT
8 weeksN/A
LM3880MFE-1AASOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
500+$0.56reel
of
250
F20A
XTT
6 weeks500
LM3880MFE-1ABSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
500+$0.56reel
of
250
F21A
XTT
8 weeksN/A
LM3880MFE-1ACSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
500+$0.56reel
of
250
F22A
XTT
8 weeksN/A
LM3880MFE-1ADSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
500+$0.56reel
of
250
F23A
XTT
8 weeks1000
LM3880MFE-1AESOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
500+$0.56reel
of
250
F25A
XTT
8 weeks500
LM3880MF-1AESOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.50reel
of
1000
F25A
XTT
8 weeksN/A
LM3880QMF-1AASOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
1000
F27A
XTT
8 weeksN/A
LM3880QMF-1ABSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
1000
F28A
XTT
8 weeksN/A
LM3880QMF-1ACSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
1000
F29A
XTT
8 weeksN/A
LM3880QMF-1ADSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
1000
F30A
XTT
8 weeksN/A
LM3880QMF-1AESOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
1000
F24A
XTT
8 weeksN/A
LM3880MF-1AASOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.50reel
of
1000
F20A
XTT
8 weeks2000
LM3880MF-1ABSOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.50reel
of
1000
F21A
XTT
8 weeks2000
LM3880MF-1ACSOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.50reel
of
1000
F22A
XTT
8 weeks2000
LM3880MF-1ADSOT-236NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.50reel
of
1000
F23A
XTT
8 weeks1000
LM3880MFX-1AESOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.50reel
of
3000
F25A
XTT
8 weeksN/A
LM3880QMFX-1AASOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
3000
F27A
XTT
8 weeksN/A
LM3880QMFX-1ABSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
3000
F28A
XTT
8 weeksN/A
LM3880QMFX-1ACSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
3000
F29A
XTT
8 weeksN/A
LM3880QMFX-1ADSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
3000
F30A
XTT
8 weeksN/A
LM3880QMFX-1AESOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.77reel
of
3000
F24A
XTT
8 weeksN/A
LM3880MFX-1AASOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.50reel
of
3000
F20A
XTT
8 weeks5000
LM3880MFX-1ABSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.50reel
of
3000
F21A
XTT
8 weeksN/A
LM3880MFX-1ACSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.50reel
of
3000
F22A
XTT
8 weeksN/A
LM3880MFX-1ADSOT-236NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$0.50reel
of
3000
F23A
XTT
8 weeksN/A

General Description


The LM3880 Power Sequencer offers the easiest method to control power up and power down of multiple power supplies (switchers 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 a SOT23-6 package, the Power Sequencer contains a precision enable pin and three open drain output flags. Upon enabling the LM3880 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.

EPROM capability allows every delay and sequence to be fully adjustable. Contact National Semiconductor if a non-standard configuration is required.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM3880MF-1AACMOS70184060010890004309006723
LM3880MF-1ABCMOS70184060010890004309006723
LM3880MF-1ACCMOS70184060010890004309006723
LM3880MF-1ADCMOS70184060010890004309006723
LM3880MF-1AECMOS70184060010890004309006723
LM3880MFE-1AACMOS70184060010890004309006723
LM3880MFE-1ABCMOS70184060010890004309006723
LM3880MFE-1ACCMOS70184060010890004309006723
LM3880MFE-1ADCMOS70184060010890004309006723
LM3880MFE-1AECMOS70184060010890004309006723
LM3880MFX-1AACMOS70184060010890004309006723
LM3880MFX-1ABCMOS70184060010890004309006723
LM3880MFX-1ACCMOS70184060010890004309006723
LM3880MFX-1ADCMOS70184060010890004309006723
LM3880MFX-1AECMOS70184060010890004309006723
LM3880QMF-1AACMOS70184060010890004309006723
LM3880QMF-1ABCMOS70184060010890004309006723
LM3880QMF-1ACCMOS70184060010890004309006723
LM3880QMF-1ADCMOS70184060010890004309006723
LM3880QMF-1AECMOS70184060010890004309006723
LM3880QMFE-1AACMOS70184060010890004309006723
LM3880QMFE-1ABCMOS70184060010890004309006723
LM3880QMFE-1ACCMOS70184060010890004309006723
LM3880QMFE-1ADCMOS70184060010890004309006723
LM3880QMFE-1AECMOS70184060010890004309006723
LM3880QMFX-1AACMOS70184060010890004309006723
LM3880QMFX-1ABCMOS70184060010890004309006723
LM3880QMFX-1ACCMOS70184060010890004309006723
LM3880QMFX-1ADCMOS70184060010890004309006723
LM3880QMFX-1AECMOS70184060010890004309006723

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


TitleSize in Kbytes Date Click link below to Download
AN-1491: Application Note 1491 LM3880 Power Sequencer Demo Board 1703
Kbytes
30-Nov-06 Download
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  

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

More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1192: Application Note 1192 Overture™ Series High Power Solutions 548
Kbytes
15-Jun-04 Download
AN-1785: Application Note 1785 LM3881 Power Sequencer Evaluation Board 614
Kbytes
27-Aug-09 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
249 Kbytes   Download

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

[Information as of 8-Nov-2009]