LM3880 - Power Sequencer

LM3880

Power Sequencer

Overview

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Diagrams

Parametrics

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Boards

Packaging

Reliability

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

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.

Applications

• Multiple supply sequencing

• Microprocessor / Microcontroller sequencing

• FPGA sequencing

• Automotive

Also Recommended

LM3881▲ Timing Cap

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LM3880

Also Recommended

LM3881▲

Timing Cap

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Block Diagram click for larger image

Typical Performance click for larger image

Paramaters / Values	LM3880	LM3881
Input Min Voltage	2.7 Volt	2.7 Volt
Input Max Voltage	5.5 Volt	5.5 Volt
Number of Regulators Able to Sequence	3	3
Power Down	Yes	Yes
Power Up	Yes	Yes
Ability to Cascade	Yes	Yes
On/Off Pin	Yes	Yes
RegType	Sequencer	Sequencer
Temperature Max	125 deg C	125 deg C
Temperature Min	-40 deg C	-40 deg C
AEC Q-100 Automotive Grade	1
Automotive	Yes	Yes

Datasheet
Title Size Date Other
Language

LM3880/LM3880Q Power Sequencer 285
Kbytes 1-May-08 日本語

Featured Application Notes
Title Size Date Other
Language

AN-1491: Application Note 1491 LM3880 Power Sequencer Demo Board 1703
Kbytes 30-Nov-06

AN-1677: Application Note 1677 LM1771 and LM3880 Based FPGA Power Supply Reference Design 177
Kbytes 14-Jan-08

AN-1603: Application Note 1603 LM274X Reference Designs 431
Kbytes 6-Dec-07 中文

More Application Notes
Title Size Date Other
Language

AN-1192: Application Note 1192 Overture™ Series High Power Solutions 548
Kbytes 15-Jun-04

AN-1785: Application Note 1785 LM3881 Power Sequencer Evaluation Board 614
Kbytes 27-Aug-09

AN-898: Application Note 898 Audio Amplifiers Utilizing: SPiKe Protection 1412
Kbytes 20-Sep-02 日本語

Part Number(s)
(NSID)

Top View

Availability

Current Reported Stock

Budgetary Pricing

Standard Pack Size

LM3880QMFE-1AA/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.86 each at 500+ pcs

reel
of
250

LM3880QMFE-1AB/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.86 each at 500+ pcs

reel
of
250

LM3880QMFE-1AC/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.86 each at 500+ pcs

reel
of
250

LM3880QMFE-1AD/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.86 each at 500+ pcs

reel
of
250

LM3880QMFE-1AE/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.86 each at 500+ pcs

reel
of
250

LM3880MFE-1AA/NOPB

RoHS

SOT-23

Full production
Lead Time: 6 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.56 each at 500+ pcs

reel
of
250

LM3880MFE-1AB/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.56 each at 500+ pcs

reel
of
250

LM3880MFE-1AC/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.56 each at 500+ pcs

reel
of
250

LM3880MFE-1AD/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.56 each at 500+ pcs

reel
of
250

LM3880MFE-1AE/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.56 each at 500+ pcs

reel
of
250

LM3880MF-1AE/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	1554

$0.50 each at 1K+ pcs

reel
of
1000

LM3880QMF-1AA/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	1908

$0.77 each at 1K+ pcs

reel
of
1000

LM3880QMF-1AB/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	1962

$0.77 each at 1K+ pcs

reel
of
1000

LM3880QMF-1AC/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	2000

$0.77 each at 1K+ pcs

reel
of
1000

LM3880QMF-1AD/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	947

$0.77 each at 1K+ pcs

reel
of
1000

LM3880QMF-1AE/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.77 each at 1K+ pcs

reel
of
1000

LM3880MF-1AA/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor	Region	Qty
ARROW	Worldwide	1000
AVNET-EM	Worldwide	2000
DIGIKEY	Worldwide	2032
FARNELL	Europe and Asia	939
FUTURE	Worldwide	1100
NEWARK	Americas	1032

$0.50 each at 1K+ pcs

reel
of
1000

LM3880MF-1AB/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor	Region	Qty
AVNET-EM	Worldwide	1000
DIGIKEY	Worldwide	1149
FARNELL	Europe and Asia	784
FUTURE	Worldwide	394
NEWARK	Americas	130

$0.50 each at 1K+ pcs

reel
of
1000

LM3880MF-1AC/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	1895
FUTURE		Worldwide	1100

$0.50 each at 1K+ pcs

reel
of
1000

LM3880MF-1AD/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
ARROW		Worldwide	1000
DIGIKEY		Worldwide	1438

$0.50 each at 1K+ pcs

reel
of
1000

LM3880MFX-1AE/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.50 each at 1K+ pcs

reel
of
3000

LM3880QMFX-1AA/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.77 each at 1K+ pcs

reel
of
3000

LM3880QMFX-1AB/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.77 each at 1K+ pcs

reel
of
3000

LM3880QMFX-1AC/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.77 each at 1K+ pcs

reel
of
3000

LM3880QMFX-1AD/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.77 each at 1K+ pcs

reel
of
3000

LM3880QMFX-1AE/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.77 each at 1K+ pcs

reel
of
3000

LM3880MFX-1AA/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.50 each at 1K+ pcs

reel
of
3000

LM3880MFX-1AB/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
AVNET-EM		Worldwide	3000
DIGIKEY		Worldwide	0

$0.50 each at 1K+ pcs

reel
of
3000

LM3880MFX-1AC/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.50 each at 1K+ pcs

reel
of
3000

LM3880MFX-1AD/NOPB

RoHS

SOT-23

Full production
Lead Time: 8 weeks

Distributor		Region	Qty
DIGIKEY		Worldwide	0

$0.50 each at 1K+ pcs

reel
of
3000

Part Number(s)
(NSID)

Description

Availability

Current Reported Stock

Budgetary Pricing

Standard Pack Size

LM3880EVAL

Power Sequencer

Full production

Distributor		Region	Qty
DIGIKEY		Worldwide	0
NATIONAL		Worldwide	23

$30.00 each

LM3880 Power Sequencer

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 mA
Standard timing options available
Customization of timing and sequence available through factory programmability

pApplications:

Multiple supply sequencing
Microprocessor / Microcontroller sequencing
FPGA sequencing

Part Number(s) (NSID)	Type	Pins	MSL Rating	Peak Reflow	RoHS	CAD Symbols	Models	Package Marking Format
LM3880QMFE-1AA/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F27A XTT
LM3880QMFE-1AB/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F28A XTT
LM3880QMFE-1AC/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F29A XTT
LM3880QMFE-1AD/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F30A XTT
LM3880QMFE-1AE/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F24A XTT
LM3880MFE-1AA/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F20A XTT
LM3880MFE-1AB/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F21A XTT
LM3880MFE-1AC/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F22A XTT
LM3880MFE-1AD/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F23A XTT
LM3880MFE-1AE/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F25A XTT
LM3880MF-1AE/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F25A XTT
LM3880QMF-1AA/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F27A XTT
LM3880QMF-1AB/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F28A XTT
LM3880QMF-1AC/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F29A XTT
LM3880QMF-1AD/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F30A XTT
LM3880QMF-1AE/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F24A XTT
LM3880MF-1AA/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F20A XTT
LM3880MF-1AB/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F21A XTT
LM3880MF-1AC/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F22A XTT
LM3880MF-1AD/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F23A XTT
LM3880MFX-1AE/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F25A XTT
LM3880QMFX-1AA/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F27A XTT
LM3880QMFX-1AB/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F28A XTT
LM3880QMFX-1AC/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F29A XTT
LM3880QMFX-1AD/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F30A XTT
LM3880QMFX-1AE/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F24A XTT
LM3880MFX-1AA/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F20A XTT
LM3880MFX-1AB/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F21A XTT
LM3880MFX-1AC/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F22A XTT
LM3880MFX-1AD/NOPB	SOT-23	6	1	260	RoHS	Download	N/A	F23A XTT

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)

LM3880MF-1AA CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MF-1AB CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MF-1AC CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MF-1AD CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MF-1AE CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFE-1AA CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFE-1AB CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFE-1AC CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFE-1AD CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFE-1AE CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFX-1AA CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFX-1AB CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFX-1AC CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFX-1AD CMOS7 0 18406 0 0 1089000 4 309006723

LM3880MFX-1AE CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMF-1AA CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMF-1AB CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMF-1AC CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMF-1AD CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMF-1AE CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFE-1AA CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFE-1AB CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFE-1AC CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFE-1AD CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFE-1AE CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFX-1AA CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFX-1AB CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFX-1AC CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFX-1AD CMOS7 0 18406 0 0 1089000 4 309006723

LM3880QMFX-1AE CMOS7 0 18406 0 0 1089000 4 309006723

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.

[Information as of 22-Nov-2009]