LM3880 Selling Leads, Price trend, LM3880 DataSheet download, circuit diagram from SeekIC.com

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 20 A Standard timing options available Customization of timing and sequence available through factory programmabilityApplicationMultiple ...

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SeekIC No. : 004395502 Detail

LM3880: 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 20 A Standard timing options availabl...

LM3880 Data Sheet

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Part Number:: LM3880
Supply Ability:: 5000

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1~5000

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Product Details

Description

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 20 A
Standard timing options available
Customization of timing and sequence available through factory programmability

Application

Multiple supply sequencing
Microprocessor / Microcontroller sequencing
FPGA sequencing

Specifications

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 Selection Guide	Yes
View Using Catalog

VCC −0.3V to +6.0V
EN, FLAG1, FLAG2, FLAG3 −0.3V to +6.0V
Storage Temperature Range −65°C to +150°C
Junction Temperature 150°C
Lead Temperature (Soldering, 5 sec.) 260°C
Minimum ESD Rating ±2 kV

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-1AA	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MF-1AB	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MF-1AC	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MF-1AD	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MF-1AE	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFE-1AA	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFE-1AB	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFE-1AC	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFE-1AD	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFE-1AE	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFX-1AA	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFX-1AB	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFX-1AC	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFX-1AD	CMOS7	0	16561	0	0	954000	4	270700104
LM3880MFX-1AE	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMF-1AA	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMF-1AB	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMF-1AC	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMF-1AD	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMF-1AE	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFE-1AA	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFE-1AB	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFE-1AC	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFE-1AD	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFE-1AE	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFX-1AA	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFX-1AB	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFX-1AC	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFX-1AD	CMOS7	0	16561	0	0	954000	4	270700104
LM3880QMFX-1AE	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-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		640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">

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More Application Notes

Title	Size in Kbytes	Date
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	608 Kbytes	30-Jan-08	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.

LM3880

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