LP3964   
800mA Fast Ultra Low Dropout Linear Regulator 		Click link to Download

Features
•Ultra low dropout voltage
•Low ground pin current
•Load regulation of 0.02%
•15µA quiescent current in shutdown mode
•Guaranteed output current of 0.8A DC
•Available in SOT-223,TO-263 and TO-220 packages
•Output voltage accuracy ± 1.5%
•Error# flag indicates output status (LP3961)
•Sense option improves better load regulation (LP3964)
•Extremely low output capacitor requirements
•Overtemperature/overcurrent protection
•-40°C to +125°C junction temperature range

Description

The LP3961/LP3964 series of fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. Wide range of preset output voltage options are available. These ultra low dropout linear regulators respond very fast to step changes in load which makes them suitable for low voltage microprocessor applications. The LP3961/LP3964 are developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3961/LP3964 to operate under extremely low dropout conditions.

Dropout Voltage: Ultra low dropout voltage; typically 24mV at 80mA load current and 240mV at 800mA load current.

Ground Pin Current: Typically 4mA at 800mA load current.

Shutdown Mode: Typically 15µA quiescent current when the shutdown pin is pulled low.

Error# Flag: Error# flag goes low when the output voltage drops 10% below nominal value (for LP3961).

SENSE: Sense pin improves regulation at remote loads. (For LP3964)

Precision Output Voltage: Multiple output voltage options are available ranging from 1.2V to 5.0V and adjustable (LP3964), with a guaranteed accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).

Applications
•Microprocessor power supplies
•GTL, GTL+, BTL, and SSTL bus terminators
•Power supplies for DSPs
•SCSI terminator
•Post regulators
•High efficiency linear regulators
•Battery chargers
•Other battery powered applications
Also Recommended
LP3874▲Improved Shutdown Pin Thresholds
LP38851▲New! National's LP38k Family Of High
LP38852▲Performance LDOs Power Digital ICs
LP38853▲See More At LDO.NATIONAL.COM



MY BRIEFCASE                                     Remove all from My Briefcase 
Click any "Briefcase" icon to add an item

                                              LP3964
Drag-Select for Table Reset Graph
Also Recommended
LP3874▲Improved Shutdown Pin Thresholds
LP38851▲New! National's LP38k Family Of High
LP38852▲Performance LDOs Power Digital ICs
LP38853▲See More At LDO.NATIONAL.COM

Typical Application
click for larger image


Block Diagram
click for larger image



Typical Performance
click for larger image


Paramaters / ValuesLP3964 LP3874 LP38851 LP38852 LP38853
Output Current800 mA 800 mA 800 mA 1500 mA 3000 mA
Output Min1.8, 2.5, 3.3, 1.215 Volt 1.8, 2.5, 3.3, 5 Volt 0.80 Volt 0.8 Volt 0.8 Volt
Input Min Voltage2.5 Volt 2.5 Volt
Input Max Voltage7 Volt 7 Volt 5.5 Volt 5.5 Volt 5.5 Volt
Dropout Voltage0.24 Volt 0.24 Volt 0.115 Volt 0.130 Volt 0.240 Volt
Adjustable OutputNo, Yes No Yes Yes Yes
Quiescent Current3 mA 5 mA 10 mA 10 mA 10 mA
On/Off PinYes Yes Yes Yes Yes
Error FlagNo No No No No
RegTypeLDO LDO LDO LDO LDO
Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C -40 deg C
Temperature Max125 deg C 125 deg C 125 deg C 125 deg C 125 deg C
Output Voltage1.8, 2.5, 3.3 Volt 1.8, 2.5, 3.3, 5 Volt
Output Max1.8, 2.5, 3.3, 5 Volt 1.8, 2.5, 3.3, 5 Volt 1.80 Volt 1.8 Volt 1.8 Volt

Datasheet
TitleSizeDateOther
Language
LP3961/LP3964 800mA Fast Ultra Low Dropout Linear Regulators914
Kbytes		20-Sep-06日本語


Featured Application Notes
TitleSizeDateOther
Language
AN-460: Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors306
Kbytes		20-Sep-02日本語


More Application Notes
TitleSizeDateOther
Language
AN-460: Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors306
Kbytes		20-Sep-02日本語

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP3964EMP-5.0/NOPB

RoHS

Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.07 each at 1K+ pcsreel
of
1000
LP3964EMP-1.8/NOPB
LP3964EMP-1.8

RoHS

Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide1739
FARNELLEurope and Asia1048
NEWARKAmericas458
$1.07 each at 1K+ pcsreel
of
1000
LP3964EMP-2.5/NOPB
LP3964EMP-2.5

RoHS

Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide1288
FARNELLEurope and Asia572
FUTUREWorldwide1100
NEWARKAmericas1067
RS COMPONENTSWorldwide669
$1.07 each at 1K+ pcsreel
of
1000
LP3964EMP-3.3/NOPB
LP3964EMP-3.3

RoHS

Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide1757
FARNELLEurope and Asia313
FUTUREWorldwide1100
RS COMPONENTSWorldwide2215
$1.07 each at 1K+ pcsreel
of
1000
LP3964EMP-ADJ/NOPB
LP3964EMP-ADJ

RoHS

Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide7000
DIGIKEYWorldwide1710
FUTUREWorldwide1100
NEWARKAmericas257
RS COMPONENTSWorldwide1445
$1.07 each at 1K+ pcsreel
of
1000
LP3964EMPX-1.8/NOPB
LP3964EMPX-1.8

RoHS

Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.07 each at 1K+ pcsreel
of
2000
LP3964EMPX-3.3/NOPB

RoHS

Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.07 each at 1K+ pcsreel
of
2000
LP3964EMPX-5.0

RoHS

Lifetime buy
Lead Time: 16 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.07 each at 1K+ pcsreel
of
2000
LP3964EMPX-2.5/NOPB

RoHS

Full production
Lead Time: 8 weeks

 
DistributorRegionQty
ARROWWorldwide2000
DIGIKEYWorldwide0
$1.07 each at 1K+ pcsreel
of
2000
LP3964EMPX-ADJ/NOPB
LP3964EMPX-ADJ

RoHS

Full production
Lead Time: 8 weeks

 
DistributorRegionQty
AVNET-EMWorldwide4000
DIGIKEYWorldwide0
FUTUREWorldwide1100
$1.07 each at 1K+ pcsreel
of
2000
LP3964ET-1.8/NOPB
LP3964ET-1.8

RoHS



TO-220		Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide236
$1.22 each at 1K+ pcsrail
of
45
LP3964ET-2.5/NOPB

RoHS



TO-220		Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
FARNELLEurope and Asia128
$1.22 each at 1K+ pcsrail
of
45
LP3964ET-3.3/NOPB
LP3964ET-3.3

RoHS



TO-220		Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
FARNELLEurope and Asia273
$1.22 each at 1K+ pcsrail
of
45
LP3964ET-5.0/NOPB

RoHS



TO-220		Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
RS COMPONENTSWorldwide95
TAYLORAmericas315
$1.22 each at 1K+ pcsrail
of
45
LP3964ET-ADJ/NOPB

RoHS



TO-220		Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide121
RS COMPONENTSWorldwide89
$1.22 each at 1K+ pcsrail
of
45
LP3964ES-5.0/NOPB

RoHS



TO-263		Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
AVNET-EMWorldwide63
DIGIKEYWorldwide0
$1.22 each at 1K+ pcsrail
of
45
LP3964ES-1.8/NOPB
LP3964ES-1.8

RoHS



TO-263		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide49
FARNELLEurope and Asia317
$1.22 each at 1K+ pcsrail
of
45
LP3964ES-2.5/NOPB
LP3964ES-2.5

RoHS



TO-263		Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
ARROWWorldwide479
AVNET-EMWorldwide200
DIGIKEYWorldwide985
NEWARKAmericas200
$1.22 each at 1K+ pcsrail
of
45
LP3964ES-3.3/NOPB
LP3964ES-3.3

RoHS



TO-263		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide39
FARNELLEurope and Asia641
$1.22 each at 1K+ pcsrail
of
45
LP3964ES-ADJ/NOPB
LP3964ES-ADJ

RoHS



TO-263		Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
ARROWWorldwide1741
AVNET-EMWorldwide38
DIGIKEYWorldwide338
FARNELLEurope and Asia929
FUTUREWorldwide315
RS COMPONENTSWorldwide10
$1.22 each at 1K+ pcsrail
of
45
LP3964ESX-1.8/NOPB
LP3964ESX-1.8

RoHS



TO-263		Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.22 each at 1K+ pcsreel
of
500
LP3964ESX-5.0/NOPB

RoHS



TO-263		Lifetime buy
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.22 each at 1K+ pcsreel
of
500
LP3964ESX-2.5/NOPB
LP3964ESX-2.5

RoHS



TO-263		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.22 each at 1K+ pcsreel
of
500
LP3964ESX-3.3/NOPB
LP3964ESX-3.3

RoHS



TO-263		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.22 each at 1K+ pcsreel
of
500
LP3964ESX-ADJ/NOPB
LP3964ESX-ADJ

RoHS



TO-263		Full production
Lead Time: 8 weeks

 
DistributorRegionQty
AVNET-EMWorldwide1000
DIGIKEYWorldwide0
$1.22 each at 1K+ pcsreel
of
500

Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LP3964EMP-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964EMPX-1.8
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964EMPX-3.3
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964EMPX-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ES-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ESX-1.8
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ESX-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-1.8
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-2.5
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-2.7
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-3.3
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LP3964EMP-5.0/NOPB
SOT-22351260RoHSDownloadN/A
XYTT
LBUB
LP3964EMP-1.8/NOPB
LP3964EMP-1.8
SOT-22351
1		260
260		RoHSDownloadN/A
XYTT
LBFB
LP3964EMP-2.5/NOPB
LP3964EMP-2.5
SOT-22351
1		260
260		RoHSDownloadN/A
XYTT
LBHB
LP3964EMP-3.3/NOPB
LP3964EMP-3.3
SOT-22351
1		260
260		RoHSDownloadN/A
XYTT
LBJB
LP3964EMP-ADJ/NOPB
LP3964EMP-ADJ
SOT-22351
1		260
260		RoHSDownloadN/A
XYTT
LBPB
LP3964EMPX-1.8/NOPB
LP3964EMPX-1.8
SOT-22351
1		260
260		RoHSDownloadN/A
XYTT
LBFB
LP3964EMPX-3.3/NOPB
SOT-22351260RoHSDownloadN/A
XYTT
LBJB
LP3964EMPX-5.0
SOT-2235RoHSDownloadN/A
XYTT
LBUB
LP3964EMPX-2.5/NOPB
SOT-22351260RoHSDownloadN/A
XYTT
LBHB
LP3964EMPX-ADJ/NOPB
LP3964EMPX-ADJ
SOT-22351
1		260
260		RoHSDownloadN/A
XYTT
LBPB
LP3964ET-1.8/NOPB
LP3964ET-1.8
TO-22051
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LP3964ET
-1.8
LP3964ET-2.5/NOPB
TO-22051NARoHSDownloadN/A
NSUZXYTTE#
LP3964ET
-2.5
LP3964ET-3.3/NOPB
LP3964ET-3.3
TO-22051
1		NA
NA		RoHSDownloadN/A
NSUZXYTTE#
LP3964ET
-3.3
LP3964ET-5.0/NOPB
TO-22051NARoHSDownloadN/A
NSUZXYTTE#
LP3964ET
-5.0
LP3964ET-ADJ/NOPB
TO-22051NARoHSDownloadN/A
NSUZXYTTE#
LP3964ET
-ADJ
LP3964ES-5.0/NOPB
TO-26353245RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-5.0
LP3964ES-1.8/NOPB
LP3964ES-1.8
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-1.8
LP3964ES-2.5/NOPB
LP3964ES-2.5
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-2.5
LP3964ES-3.3/NOPB
LP3964ES-3.3
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-3.3
LP3964ES-ADJ/NOPB
LP3964ES-ADJ
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-ADJ
LP3964ESX-1.8/NOPB
LP3964ESX-1.8
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-1.8
LP3964ESX-5.0/NOPB
TO-26353245RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-5.0
LP3964ESX-2.5/NOPB
LP3964ESX-2.5
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-2.5
LP3964ESX-3.3/NOPB
LP3964ESX-3.3
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-3.3
LP3964ESX-ADJ/NOPB
LP3964ESX-ADJ
TO-26353
3		245
235		RoHSDownloadN/A
NSUZXYTTE#
LP3964ES
-ADJ

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP3964EMP-1.8CS065238968520440200011249079519
LP3964EMP-2.5CS065238968520440200011249079519
LP3964EMP-3.3CS065238968520440200011249079519
LP3964EMP-5.0CS065238968520440200011249079519
LP3964EMP-ADJCS065238968520440200011249079519
LP3964EMPX-1.8CS065238968520440200011249079519
LP3964EMPX-2.5CS065238968520440200011249079519
LP3964EMPX-3.3CS065238968520440200011249079519
LP3964EMPX-5.0CS065238968520440200011249079519
LP3964EMPX-ADJCS065238968520440200011249079519
LP3964ES-1.8CS065238968520440200011249079519
LP3964ES-2.5CS065238968520440200011249079519
LP3964ES-3.3CS065238968520440200011249079519
LP3964ES-5.0CS065238968520440200011249079519
LP3964ES-ADJCS065238968520440200011249079519
LP3964ESX-1.8CS065238968520440200011249079519
LP3964ESX-2.5CS065238968520440200011249079519
LP3964ESX-3.3CS065238968520440200011249079519
LP3964ESX-5.0CS065238968520440200011249079519
LP3964ESX-ADJCS065238968520440200011249079519
LP3964ET-1.8CS065238968520440200011249079519
LP3964ET-2.5CS065238968520440200011249079519
LP3964ET-3.3CS065238968520440200011249079519
LP3964ET-5.0CS065238968520440200011249079519
LP3964ET-ADJCS065238968520440200011249079519

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.


Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LP3964EMP-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964EMPX-1.8
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964EMPX-3.3
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964EMPX-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ES-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ESX-1.8
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ESX-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-1.8
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-2.5
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-2.7
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-3.3
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3964ET-5.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009

[Information as of 22-Nov-2009]