LP38693   
500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors from the PowerWise® Family		 Click link to Download

Features
•2.0% output accuracy (25°C)
•Low dropout voltage: 250 mV @ 500mA (typ, 5V out)
•Wide input voltage range (2.7V to 10V)
•Precision (trimmed) bandgap reference
•Guaranteed specs for -40°C to +125°C
•1µA off-state quiescent current
•Thermal overload protection
•Foldback current limiting
•T0-252, SOT-223 and 6-Lead LLP packages
•Enable pin (LP38693)

Description

The LP38691/3 low dropout CMOS linear regulators provide tight output tolerance (2.0% typical), extremely low dropout voltage (250 mV @ 500mA load current, VOUT = 5V), and excellent AC performance utilizing ultra low ESR ceramic output capacitors.

The low thermal resistance of the LLP, SOT-223 and TO-252 packages allow the full operating current to be used even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base drive current is required to bias it allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out).

Ground Pin Current: 55 µA (typ) at full load.

Precision Output Voltage: 2.0% (25°C) accuracy.

Applications
•Hard Disk Drives
•Notebook Computers
•Battery Powered Devices
•Portable Instrumentation
Also Recommended
LP38501-ADJ▲New! National's LP38k Family Of High
LP38503-ADJ▲Performance LDOs Power Digital ICs
LP38691▲Enable Function Removed
LP38693-ADJ▲Adjustable Output
LP38853▲See More At LDO.NATIONAL.COM



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Also Recommended
LP38501-ADJ▲New! National's LP38k Family Of High
LP38503-ADJ▲Performance LDOs Power Digital ICs
LP38691▲Enable Function Removed
LP38693-ADJ▲Adjustable Output
LP38853▲See More At LDO.NATIONAL.COM
Paramaters / ValuesLP38693 LP38501-ADJ LP38503-ADJ LP38691 LP38693-ADJ LP38853
Output Current500 mA 3000 mA 3000 mA 500 mA 500 mA 3000 mA
Output Min1.8, 2.5, 3.3, 5 Volt 0.6 Volt 0.6 Volt 1.8, 2.5, 3.3, 5 Volt 1.25 Volt 0.8 Volt
Input Min Voltage2.93, 2.7, 3.73, 5.43 Volt 2.7 Volt 2.7 Volt 2.93, 2.7, 3.73, 5.43 Volt 2.7 Volt
Input Max Voltage10 Volt 5.5 Volt 5.5 Volt 10 Volt 10 Volt 5.5 Volt
Dropout VoltageUndefined, 0.25, 0.33, 0.43 Volt 0.42 Volt 0.42 Volt Undefined, 0.25, 0.33, 0.43 Volt 0.25 Volt 0.240 Volt
Adjustable OutputNo Yes Yes No Yes Yes
Quiescent Current0.055 mA 2 mA 2 mA 0.055 mA 0.055 mA 10 mA
On/Off PinYes Yes No No Yes Yes
Error FlagNo No No No No No
RegTypeLDO LDO LDO LDO LDO LDO
Temperature Min-40 deg C -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 125 deg C
Output Voltage1.8, 2.5, 3.3, 5 Volt 1.8, 2.5, 3.3, 5 Volt Undefined Volt
Output Max1.8, 2.5, 3.3, 5 Volt 5 Volt 5 Volt 1.8, 2.5, 3.3, 5 Volt 9 Volt 1.8 Volt
PowerWiseYes Yes Yes Yes

Datasheets
TitleSizeDateOther
Language
LP38691 LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors419
Kbytes		26-Aug-09 


Featured Application Notes
TitleSizeDateOther
Language
AN-1841: Application Note 1841 LMH1982 Evaluation Board User Guide913
Kbytes		21-May-08 中文

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP38693MP-1.8/NOPB
LP38693MP-1.8

RoHS Status



SOT-223		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide1000
DIGIKEYWorldwide194
FARNELLEurope and Asia529
FUTUREWorldwide800
RS COMPONENTSWorldwide685
$0.53 each at 1K+ pcsreel
of
1000
LP38693MP-2.5/NOPB

RoHS Status



SOT-223		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide1000
DIGIKEYWorldwide3555
FUTUREWorldwide1100
$0.53 each at 1K+ pcsreel
of
1000
LP38693MP-3.3/NOPB
LP38693MP-3.3

RoHS Status



SOT-223		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide6090
FARNELLEurope and Asia2609
FUTUREWorldwide1100
NEWARKAmericas728
RS COMPONENTSWorldwide375
$0.53 each at 1K+ pcsreel
of
1000
LP38693MP-5.0/NOPB
LP38693MP-5.0

RoHS Status



SOT-223		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide1000
DIGIKEYWorldwide5724
FARNELLEurope and Asia833
NEWARKAmericas534
RS COMPONENTSWorldwide660
$0.53 each at 1K+ pcsreel
of
1000
LP38693MPX-1.8/NOPB
LP38693MPX-1.8

RoHS Status



SOT-223		Full production
Lead Time: 16 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
2000
LP38693MPX-2.5/NOPB
LP38693MPX-2.5

RoHS Status



SOT-223		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
2000
LP38693MPX-3.3/NOPB
LP38693MPX-3.3

RoHS Status



SOT-223		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
ARROWWorldwide2000
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
2000
LP38693MPX-5.0/NOPB
LP38693MPX-5.0

RoHS Status



SOT-223		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
2000
LP38693SD-1.8/NOPB
LP38693SD-1.8

RoHS Status



LLP		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
ARROWWorldwide1000
AVNET-EMWorldwide1000
DIGIKEYWorldwide1768
$0.53 each at 1K+ pcsreel
of
1000
LP38693SD-2.5/NOPB
LP38693SD-2.5

RoHS Status



LLP		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide1904
$0.53 each at 1K+ pcsreel
of
1000
LP38693SD-3.3/NOPB
LP38693SD-3.3

RoHS Status



LLP		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide1000
DIGIKEYWorldwide3148
FUTUREWorldwide1100
NEWARKAmericas855
$0.53 each at 1K+ pcsreel
of
1000
LP38693SD-5.0/NOPB
LP38693SD-5.0

RoHS Status



LLP		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
ARROWWorldwide23000
AVNET-EMWorldwide5000
DIGIKEYWorldwide3870
FUTUREWorldwide1100
NEWARKAmericas340
$0.53 each at 1K+ pcsreel
of
1000
LP38693SDX-1.8/NOPB
LP38693SDX-1.8

RoHS Status



LLP		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
4500
LP38693SDX-2.5/NOPB
LP38693SDX-2.5

RoHS Status



LLP		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
4500
LP38693SDX-3.3/NOPB
LP38693SDX-3.3

RoHS Status



LLP		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
4500
LP38693SDX-5.0/NOPB
LP38693SDX-5.0

RoHS Status



LLP		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.53 each at 1K+ pcsreel
of
4500

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
LP38693MP-1.8/NOPB
LP38693MP-1.8
SOT-22351
1		260
260		DetailDownloadN/A
XYTT
LJVB
LP38693MP-2.5/NOPB
SOT-22351260DetailDownloadN/A
XYTT
LJXB
LP38693MP-3.3/NOPB
LP38693MP-3.3
SOT-22351
1		260
260		DetailDownloadN/A
XYTT
LJYB
LP38693MP-5.0/NOPB
LP38693MP-5.0
SOT-22351
1		260
260		DetailDownloadN/A
XYTT
LJZB
LP38693MPX-1.8/NOPB
LP38693MPX-1.8
SOT-22351
1		260
260		DetailDownloadN/A
XYTT
LJVB
LP38693MPX-2.5/NOPB
LP38693MPX-2.5
SOT-22351
1		260
260		DetailDownloadN/A
XYTT
LJXB
LP38693MPX-3.3/NOPB
LP38693MPX-3.3
SOT-22351
1		260
260		DetailDownloadN/A
XYTT
LJYB
LP38693MPX-5.0/NOPB
LP38693MPX-5.0
SOT-22351
1		260
260		DetailDownloadN/A
XYTT
LJZB
LP38693SD-1.8/NOPB
LP38693SD-1.8
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L128B
LP38693SD-2.5/NOPB
LP38693SD-2.5
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L129B
LP38693SD-3.3/NOPB
LP38693SD-3.3
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L130B
LP38693SD-5.0/NOPB
LP38693SD-5.0
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L131B
LP38693SDX-1.8/NOPB
LP38693SDX-1.8
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L128B
LP38693SDX-2.5/NOPB
LP38693SDX-2.5
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L129B
LP38693SDX-3.3/NOPB
LP38693SDX-3.3
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L130B
LP38693SDX-5.0/NOPB
LP38693SDX-5.0
LLP61
1		260
260		DetailDownloadN/A
ZXYTT
L131B

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 LP38693 CAD Symbols
 Models
N/A

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP38693MP-1.8ABCD15003417500423400011201409060
LP38693MP-2.5ABCD15003417500423400011201409060
LP38693MP-3.3ABCD15003417500423400011201409060
LP38693MP-5.0ABCD15003417500423400011201409060
LP38693MPX-1.8ABCD15003417500423400011201409060
LP38693MPX-2.5ABCD15003417500423400011201409060
LP38693MPX-3.3ABCD15003417500423400011201409060
LP38693MPX-5.0ABCD15003417500423400011201409060
LP38693SD-1.8ABCD15003417500423400011201409060
LP38693SD-2.5ABCD15003417500423400011201409060
LP38693SD-3.3ABCD15003417500423400011201409060
LP38693SD-5.0ABCD15003417500423400011201409060
LP38693SDX-1.8ABCD15003417500423400011201409060
LP38693SDX-2.5ABCD15003417500423400011201409060
LP38693SDX-3.3ABCD15003417500423400011201409060
LP38693SDX-5.0ABCD15003417500423400011201409060

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.

[Information as of 19-Mar-2010]