LP3984   
Micropower, 150mA Ultra Low-Dropout CMOS Voltage Regulator in Subminiature 4-I/O micro SMD Package 		Click link to Download

Features
•Miniature 4-I/O micro SMD and SOT-23-5 package
•Logic controlled enable
•Stable with tantalum capacitors
•1 µF Tantalum output capacitor
•Fast turn-on
•Thermal shutdown and short-circuit current limit

Description

The LP3984 is designed for portable and wireless applications with demanding performance and space requirements.

The LP3984's performance is optimized for battery powered systems to deliver extremely low dropout voltage and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low frequencies and starts to roll off at 10 kHz. High power supply rejection is maintained down to low input voltage levels common to battery operated circuits.

The device is ideal for mobile phone and similar battery powered wireless applications. It provides up to 150 mA from a 2.5V to 6V input. The LP3984 consumes less than 1.2µA in disable mode and has fast turn-on time less than 20µs.

The LP3984 is available in a 4 bump micro SMD and 5 pin SOT-23 package. Performance is specified for -40°C to +125°C temperature range and is available in 1.5V, 1.8V, 2.0V, 2.9V and 3.1V output voltages. For other output voltage options from 1.5V to 3.5V, please contact National Semiconductor sales office.

Key Specification
•2.5 to 6.0V input range
•150mA guaranteed output
•60dB PSRR at 1kHz, 40dB at 10kHz @ 3.1VIN
•<=1.2µA quiescent current when shut down
•Fast Turn-On time: 20 µs (typ.)
•75mV typ dropout with 150mA load
•-40 to +125°C junction temperature range for operation
•1.5V, 1.8V, 2.0V, 2.9V and 3.1V

Applications
•CDMA cellular handsets
•Wideband CDMA cellular handsets
•GSM cellular handsets
•Portable information appliances
Also Recommended
LP2983▲0.9V, 1.0V And 1.2V Output Options
LP3985▲Uses Ceramic Output Capacitors



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Also Recommended
LP2983▲0.9V, 1.0V And 1.2V Output Options
LP3985▲Uses Ceramic Output Capacitors

Typical Application
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Block Diagram
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Typical Performance
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Paramaters / ValuesLP3984 LP2983 LP3985
Output Current150 mA 150 mA 150 mA
Output Min1.8, 2.9, 1.5, 3.1 Volt 1, 1.2 Volt 2.6, 4.7, 2.7, 2.5, 3.2, 3.3, 3, 2.8, 2.9, 3.1, 5 Volt
Input Min Voltage2.5 Volt 2.2 Volt 2.5 Volt
Input Max Voltage6 Volt 16 Volt 6 Volt
Dropout Voltage0.06 Volt 1, 1.2 Volt 0.06 Volt
Adjustable OutputNo No No
Quiescent Current0.08 mA 0.065 mA 0.085 mA
On/Off PinYes Yes Yes
Error FlagNo No No
RegTypeLDO LDO LDO
Temperature Min-40 deg C -40 deg C -40 deg C
Temperature Max125 deg C 125 deg C 125 deg C
Output Voltage1.8, 2.9, 1.5, 3.1 Volt 1, 1.2 Volt 2.6, 4.7, 2.7, 2.5, 3.2, 3.3, 3, 2.8, 2.9, 3.1, 5 Volt
Output Max1.8, 2.9, 1.5, 3.1 Volt 1, 1.2 Volt 2.6, 4.7, 2.7, 2.5, 3.2, 3.3, 3, 2.8, 2.9, 3.1, 5 Volt
Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP3984IMF-1.5/NOPB
LP3984IMF-1.5

RoHS Status



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
ARROWWorldwide21000
DIGIKEYWorldwide5872
FUTUREWorldwide1100
NEWARKAmericas428
RS COMPONENTSWorldwide1025
$0.32 each at 1K+ pcsreel
of
1000
LP3984IMF-1.8/NOPB
LP3984IMF-1.8

RoHS Status



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
ARROWWorldwide6800
AVNET-EMWorldwide970
DIGIKEYWorldwide6390
FUTUREWorldwide1100
NEWARKAmericas615
RS COMPONENTSWorldwide290
TECHMOSAAsia Pacific1000
$0.32 each at 1K+ pcsreel
of
1000
LP3984IMF-3.1/NOPB
LP3984IMF-3.1

RoHS Status



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
ARROWWorldwide6000
AVNET-EMWorldwide1000
DIGIKEYWorldwide6984
FUTUREWorldwide1100
NEWARKAmericas546
RS COMPONENTSWorldwide150
$0.32 each at 1K+ pcsreel
of
1000
LP3984IMFX-1.8/NOPB
LP3984IMFX-1.8

RoHS Status



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
ARROWWorldwide6000
DIGIKEYWorldwide0
$0.32 each at 1K+ pcsreel
of
3000
LP3984ITP-2.9/NOPB

RoHS Status



MICRO SMD		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide1121
$0.34 each at 1K+ pcsreel
of
250
LP3984ITP-3.1/NOPB

RoHS Status



MICRO SMD		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.34 each at 1K+ pcsreel
of
250
LP3984ITPX-1.8/NOPB

RoHS Status



MICRO SMD		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.34 each at 1K+ pcsreel
of
3000
LP3984ITPX-3.1/NOPB

RoHS Status



MICRO SMD		Full production
Lead Time: 12 weeks

 

Contact your distributor
CALLreel
of
N/A
LP3984I-1.5 MWC

RoHS Status

Full production
Lead Time: N/A

 

Contact your distributor
CALLwafer jar
of
N/A

Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LP3984IBP-1.5
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBP-1.8
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBP-2.0
LP3984ITP-2.9
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBP-3.1
LP3984ITP-3.1
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-1.5
LP3984ITPX-1.8
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-1.8
LP3984ITPX-1.8
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-2.0
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-3.1
LP3984ITPX-3.1
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IMF-2.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3984IMFX-1.5
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3984IMFX-2.0
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IMFX-3.1
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3984ITP-1.8
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984ITPX-2.9
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHS
Status		CAD SymbolsModelsPackage
Marking
Format
LP3984IMF-1.5/NOPB
LP3984IMF-1.5
SOT-2351
1		260
260		DetailDownloadN/A
LEAB
XTT
LP3984IMF-1.8/NOPB
LP3984IMF-1.8
SOT-2351
1		260
260		DetailDownloadN/A
LEBB
XTT
LP3984IMF-3.1/NOPB
LP3984IMF-3.1
SOT-2351
1		260
260		DetailDownloadN/A
LEDB
XTT
LP3984IMFX-1.8/NOPB
LP3984IMFX-1.8
SOT-2351
1		260
260		DetailDownloadN/A
LEBB
XTT
LP3984ITP-2.9/NOPB
MICRO SMD41260DetailDownloadN/A
X
I
LP3984ITP-3.1/NOPB
MICRO SMD41260DetailDownloadN/A
X
I
LP3984ITPX-1.8/NOPB
MICRO SMD41260DetailDownloadN/A
X
I
LP3984ITPX-3.1/NOPB
MICRO SMD41260DetailDownloadN/A
X
I
LP3984I-1.5 MWC
WaferN/A
-

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

CAD Symbols and Models
Download LP3984 CAD Symbols
 Models
N/A

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP3984I-1.5 MWCCMOS70184060010890004309006723
LP3984IMF-1.5CMOS70184060010890004309006723
LP3984IMF-1.8CMOS70184060010890004309006723
LP3984IMF-2.0CMOS70184060010890004309006723
LP3984IMF-3.1CMOS70184060010890004309006723
LP3984IMFX-1.5CMOS70184060010890004309006723
LP3984IMFX-1.8CMOS70184060010890004309006723
LP3984IMFX-3.1CMOS70184060010890004309006723
LP3984ITP-1.8CMOS70184060010890004309006723
LP3984ITP-2.9CMOS70184060010890004309006723
LP3984ITP-3.1CMOS70184060010890004309006723
LP3984ITPX-1.8CMOS70184060010890004309006723
LP3984ITPX-2.9CMOS70184060010890004309006723
LP3984ITPX-3.1CMOS70184060010890004309006723

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.


All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

Obsolete Versions
Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LP3984IBP-1.5
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBP-1.8
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBP-2.0
LP3984ITP-2.9
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBP-3.1
LP3984ITP-3.1
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-1.5
LP3984ITPX-1.8
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-1.8
LP3984ITPX-1.8
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-2.0
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IBPX-3.1
LP3984ITPX-3.1
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IMF-2.0
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3984IMFX-1.5
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3984IMFX-2.0
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984IMFX-3.1
NONE
NATIONAL SEMICONDUCTOR
01 Dec 2009
LP3984ITP-1.8
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LP3984ITPX-2.9
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008

[Information as of 20-Mar-2010]