LP5951   
Micropower, 150mA Low-Dropout CMOS Voltage Regulator 		Click link to Download

Features
• Excellent line transient response: ±2mV typ.
• Excellent PSRR: -60dB at 1kHz typ.
• Low quiescent current of 29µA typ.
• 1.8 to 5.5V input voltage range
• Small SC70-5 and SOT23-5 packages
• Fast turn-on time of 30µs typ.
• Typ. < 1nA quiescent current in shutdown
• Guaranteed 150mA output current
• Output voltage range: 1.3V to 3.3V
• Logic controlled enable 0.4V/0.9V
• Good load transient response of 50mVpp typ.
• Thermal-overload and short-circuit protection
• -40°C to +125°C junction temperature range

Description

The LP5951 regulator is designed to meet the requirements of portable, battery-powered systems providing a regulated output voltage and low quiescent current. When switched to shutdown mode via a logic signal at the Enable pin, the power consumption is reduced to virtually zero.

The LP5951 is designed to be stable with small 1µF ceramic capacitors.

The LP5951 also features internal protection against short-circuit currents and over-temperature conditions.

Performance is specified for a -40°C to 125°C temperature range.

The device is available in SOT23-5 and SC70-5 package.

The device is available in fixed output voltages in the range of 1.3V to 3.3V. For availability, please contact your local NSC sales office.

Applications
• General purpose

Also Recommended
LP3991▲Lower Dropout LDO
LP5900▲Lower Noise LDO


Typical Application Circuit
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Also Recommended
LP3991▲Lower Dropout LDO
LP5900▲Lower Noise LDO
Paramaters / ValuesLP5951 LP3991 LP5900
Output Current150 mA 300 mA 150 mA
Output Min2.0, 1.8, 3.0, 2.5, 1.3, 3.3, 2.8, 1.5 Volt 1.3, 1.2, 2.8, 1.5 Volt 3.3, 2.8, 1.5 Volt
Input Min Voltage1.8 Volt 1.65 Volt 2.5 Volt
Input Max Voltage5.5 Volt 3.6 Volt 5.5 Volt
Dropout Voltage0.2 Volt 0.075 Volt 0.08 Volt
Adjustable OutputNo No No
Quiescent Current0.029 mA 0.05 mA 0.025 mA
PSRR60 dB 75 dB
Voltage Noise (rms)125 uV 6.5 uV
Ceramic Capacitors StableYes
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 Voltage2.0, 1.8, 3.0, 2.5, 1.3, 3.3, 2.8, 1.5 Volt 1.3, 1.2, 2.8, 1.5 Volt 3.3, 2.8, 1.5 Volt
Output Max2.0, 1.8, 3.0, 2.5, 1.3, 3.3, 2.8, 1.5 Volt 1.3, 1.2, 2.8, 1.5 Volt 3.3, 2.8, 1.5 Volt

Datasheet
TitleSizeDateOther
Language
LP5951 Micropower, 150mA Low-Dropout CMOS Voltage Regulator302
Kbytes		4-May-07日本語


Featured Application Notes
TitleSizeDateOther
Language
AN-1486: Application Note 1486 LP5951 Evaluation Board610
Kbytes		11-Sep-06 中文


More Application Notes
TitleSizeDateOther
Language
AN-1531: Application Note 1531 LP5952 Evaluation Board1453
Kbytes		3-Apr-08 

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP5951MG-1.3/NOPB

RoHS



SC-70		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide2000
DIGIKEYWorldwide2696
FARNELLEurope and Asia2055
RS COMPONENTSWorldwide48
$0.27 each at 1K+ pcsreel
of
1000
LP5951MG-1.5/NOPB

RoHS



SC-70		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide2647
FARNELLEurope and Asia75
FUTUREWorldwide1100
RS COMPONENTSWorldwide1790
$0.27 each at 1K+ pcsreel
of
1000
LP5951MG-1.8/NOPB
LP5951MG-1.8

RoHS



SC-70		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide2000
DIGIKEYWorldwide2208
FARNELLEurope and Asia3334
FUTUREWorldwide1100
$0.27 each at 1K+ pcsreel
of
1000
LP5951MG-2.0/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide3000
DIGIKEYWorldwide2787
FUTUREWorldwide1100
$0.27 each at 1K+ pcsreel
of
1000
LP5951MG-2.5/NOPB
LP5951MG-2.5

RoHS



SC-70		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide1870
FARNELLEurope and Asia1887
RS COMPONENTSWorldwide80
$0.27 each at 1K+ pcsreel
of
1000
LP5951MG-2.8/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide1000
DIGIKEYWorldwide2140
FARNELLEurope and Asia1580
$0.27 each at 1K+ pcsreel
of
1000
LP5951MG-3.0/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide2000
DIGIKEYWorldwide1211
$0.27 each at 1K+ pcsreel
of
1000
LP5951MG-3.3/NOPB

RoHS



SC-70		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide6161
FUTUREWorldwide1100
$0.27 each at 1K+ pcsreel
of
1000
LP5951MGX-1.3/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MGX-1.5/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MGX-1.8/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MGX-2.0/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MGX-2.5/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MGX-2.8/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MGX-3.0/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MGX-3.3/NOPB

RoHS



SC-70		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.27 each at 1K+ pcsreel
of
3000
LP5951MF-1.3/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide1000
DIGIKEYWorldwide5000
FARNELLEurope and Asia1844
FUTUREWorldwide1100
KEIKONGAsia Pacific1000
NEWARKAmericas2000
RS COMPONENTSWorldwide1015
$0.24 each at 1K+ pcsreel
of
1000
LP5951MF-1.5/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide1000
DIGIKEYWorldwide3869
FUTUREWorldwide1100
NEWARKAmericas475
RS COMPONENTSWorldwide820
$0.24 each at 1K+ pcsreel
of
1000
LP5951MF-1.8/NOPB

RoHS



SOT-23		Full production
Lead Time: 8 weeks

Samples
DistributorRegionQty
ARROWWorldwide1000
AVNET-EMWorldwide1998
DIGIKEYWorldwide2692
FARNELLEurope and Asia513
FUTUREWorldwide1100
KEIKONGAsia Pacific1000
NEWARKAmericas780
RS COMPONENTSWorldwide495
$0.24 each at 1K+ pcsreel
of
1000
LP5951MF-2.0/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
ARROWWorldwide5000
AVNET-EMWorldwide2000
DIGIKEYWorldwide2652
FARNELLEurope and Asia814
FUTUREWorldwide1100
RS COMPONENTSWorldwide55
$0.24 each at 1K+ pcsreel
of
1000
LP5951MF-2.5/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide21000
DIGIKEYWorldwide4667
FARNELLEurope and Asia1929
FUTUREWorldwide1100
NEWARKAmericas1563
RS COMPONENTSWorldwide50
$0.24 each at 1K+ pcsreel
of
1000
LP5951MF-2.8/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide2000
DIGIKEYWorldwide7151
FARNELLEurope and Asia1586
KEIKONGAsia Pacific1000
RS COMPONENTSWorldwide430
$0.24 each at 1K+ pcsreel
of
1000
LP5951MF-3.0/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AITGAsia Pacific1001
ARROWWorldwide10000
AVNET-EMWorldwide1000
DIGIKEYWorldwide1749
FARNELLEurope and Asia1031
FUTUREWorldwide1100
NEWARKAmericas1795
RS COMPONENTSWorldwide710
$0.24 each at 1K+ pcsreel
of
1000
LP5951MF-3.3/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

Samples
DistributorRegionQty
AVNET-EMWorldwide988
DIGIKEYWorldwide0
FARNELLEurope and Asia218
FUTUREWorldwide975
KEIKONGAsia Pacific10000
NEWARKAmericas57
RS COMPONENTSWorldwide485
$0.24 each at 1K+ pcsreel
of
1000
LP5951MFX-1.3/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000
LP5951MFX-1.5/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000
LP5951MFX-1.8/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000
LP5951MFX-2.0/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
AVNET-EMWorldwide3000
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000
LP5951MFX-2.5/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000
LP5951MFX-2.8/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000
LP5951MFX-3.0/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000
LP5951MFX-3.3/NOPB

RoHS



SOT-23		Full production
Lead Time: 12 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$0.24 each at 1K+ pcsreel
of
3000

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP5951MF-1.8EV
Micropower, 150mA Low-Dropout CMOS Voltage RegulatorFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
FUTUREWorldwide4
NATIONALWorldwide63
$45.00 each1

The LP5951 regulator is designed to meet the requirements of portable, battery-powered systems providing a regulated output voltage and low quiescent current. When switched to shutdown mode via a logic signal at the Enable pin, the power consumption is reduced to virtually zero.

The LP5951 is designed to be stable with small 1 microF/1.5microF ceramic capacitors.

The LP5951 also features internal protection against short-circuit currents and over-temperature conditions.

Performance is specified for a -40° C to 125° temperature range. The device is available in SOT23-5 and SC70-5 package.

The LP5951 evaluation board is designed to enable independent evaluation of the LP5951 electrical performance. Each board is pre-assembled and tested in the factory. The evaluation kits are available in two options: LP5951MF-1.8EV and LP5951MF-2.5EV. For other voltage and package options, the device can be ordered from the LP5951 product folder on National's website. The board offers two different assembly options: SC70-5 package (MG) on top side (TOP) or SOT23-5 package on bottom side (BOT) of the
board. Only one side will be assembled at a time.

Features:

  • Excellent line transient response: plus or minus 2mV typ.
  • Excellent PSRR: -60dB at 1kHz typ.
  • Low quiescent current of 29 microA typ.
  • 1.8 to 5.5V input voltage range
  • Small SC70-5 and SOT23-5 packages
  • Fast turn-on time of 30 mcro seconds typ.
  • Typ. < 1nA quiescent current in shutdown
  • Guaranteed 150mA output current
  • Output voltage range: 1.3V to 3.3V
  • Logic controlled enable 0.4V/0.9V
  • Good load transient response of 50mVpp typ.
  • Thermal-overload and short-circuit protection
  • -40° C to +125°C junction temperature range

Applications:

  • General Purpose

Part Number(s)
(NSID)		DescriptionAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LP5951MF-2.5EV
Micropower, 150mA Low-Dropout CMOS Voltage RegulatorFull production


 
DistributorRegionQty
DIGIKEYWorldwide0
NATIONALWorldwide70
$45.00 each1

The LP5951 regulator is designed to meet the requirements of portable, battery-powered systems providing a regulated output voltage and low quiescent current. When switched to shutdown mode via a logic signal at the Enable pin, the power consumption is reduced to virtually zero.

The LP5951 is designed to be stable with small 1 microF/1.5microF ceramic capacitors.

The LP5951 also features internal protection against short-circuit currents and over-temperature conditions.

Performance is specified for a -40° C to 125° temperature range. The device is available in SOT23-5 and SC70-5 package.

The LP5951 evaluation board is designed to enable independent evaluation of the LP5951 electrical performance. Each board is pre-assembled and tested in the factory. The evaluation kits are available in two options: LP5951MF-1.8EV and LP5951MF-2.5EV. For other voltage and package options, the device can be ordered from the LP5951 product folder on National's website. The board offers two different assembly options: SC70-5 package (MG) on top side (TOP) or SOT23-5 package on bottom side (BOT) of the board. Only one side will be assembled at a time.

Features:

  • Excellent line transient response: plus or minus 2mV typ.
  • Excellent PSRR: -60dB at 1kHz typ.
  • Low quiescent current of 29 microA typ.
  • 1.8 to 5.5V input voltage range
  • Small SC70-5 and SOT23-5 packages
  • Fast turn-on time of 30 mcro seconds typ.
  • Typ. < 1nA quiescent current in shutdown
  • Guaranteed 150mA output current
  • Output voltage range: 1.3V to 3.3V
  • Logic controlled enable 0.4V/0.9V
  • Good load transient response of 50mVpp typ.
  • Thermal-overload and short-circuit protection
  • -40° C to +125°C junction temperature range

Applications:

  • General Purpose

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LP5951MG-1.3/NOPB
SC-7051260RoHSDownloadN/A
L23
XTT
LP5951MG-1.5/NOPB
SC-7051260RoHSDownloadN/A
L2B
XTT
LP5951MG-1.8/NOPB
LP5951MG-1.8
SC-7051
1		260
260		RoHSDownloadN/A
L3B
XTT
LP5951MG-2.0/NOPB
SC-7051260RoHSDownloadN/A
L4B
XTT
LP5951MG-2.5/NOPB
LP5951MG-2.5
SC-7051
1		260
260		RoHSDownloadN/A
L5B
XTT
LP5951MG-2.8/NOPB
SC-7051260RoHSDownloadN/A
L6B
XTT
LP5951MG-3.0/NOPB
SC-7051260RoHSDownloadN/A
L7B
XTT
LP5951MG-3.3/NOPB
SC-7051260RoHSDownloadN/A
LAB
XTT
LP5951MGX-1.3/NOPB
SC-7051260RoHSDownloadN/A
L23
XTT
LP5951MGX-1.5/NOPB
SC-7051260RoHSDownloadN/A
L2B
XTT
LP5951MGX-1.8/NOPB
SC-7051260RoHSDownloadN/A
L3B
XTT
LP5951MGX-2.0/NOPB
SC-7051260RoHSDownloadN/A
L4B
XTT
LP5951MGX-2.5/NOPB
SC-7051260RoHSDownloadN/A
L5B
XTT
LP5951MGX-2.8/NOPB
SC-7051260RoHSDownloadN/A
L6B
XTT
LP5951MGX-3.0/NOPB
SC-7051260RoHSDownloadN/A
L7B
XTT
LP5951MGX-3.3/NOPB
SC-7051260RoHSDownloadN/A
LAB
XTT
LP5951MF-1.3/NOPB
SOT-2351260RoHSDownloadN/A
LKRB
XTT
LP5951MF-1.5/NOPB
SOT-2351260RoHSDownloadN/A
LKAB
XTT
LP5951MF-1.8/NOPB
SOT-2351260RoHSDownloadN/A
LKBB
XTT
LP5951MF-2.0/NOPB
SOT-2351260RoHSDownloadN/A
LKCB
XTT
LP5951MF-2.5/NOPB
SOT-2351260RoHSDownloadN/A
LKEB
XTT
LP5951MF-2.8/NOPB
SOT-2351260RoHSDownloadN/A
LKFB
XTT
LP5951MF-3.0/NOPB
SOT-2351260RoHSDownloadN/A
LKGB
XTT
LP5951MF-3.3/NOPB
SOT-2351260RoHSDownloadN/A
LKHB
XTT
LP5951MFX-1.3/NOPB
SOT-2351260RoHSDownloadN/A
LKRB
XTT
LP5951MFX-1.5/NOPB
SOT-2351260RoHSDownloadN/A
LKAB
XTT
LP5951MFX-1.8/NOPB
SOT-2351260RoHSDownloadN/A
LKBB
XTT
LP5951MFX-2.0/NOPB
SOT-2351260RoHSDownloadN/A
LKCB
XTT
LP5951MFX-2.5/NOPB
SOT-2351260RoHSDownloadN/A
LKEB
XTT
LP5951MFX-2.8/NOPB
SOT-2351260RoHSDownloadN/A
LKFB
XTT
LP5951MFX-3.0/NOPB
SOT-2351260RoHSDownloadN/A
LKGB
XTT
LP5951MFX-3.3/NOPB
SOT-2351260RoHSDownloadN/A
LKHB
XTT

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LP5951MF-1.3CMOS70184060010890004309006723
LP5951MF-1.5CMOS70184060010890004309006723
LP5951MF-1.8CMOS70184060010890004309006723
LP5951MF-2.0CMOS70184060010890004309006723
LP5951MF-2.5CMOS70184060010890004309006723
LP5951MF-2.8CMOS70184060010890004309006723
LP5951MF-3.0CMOS70184060010890004309006723
LP5951MF-3.3CMOS70184060010890004309006723
LP5951MFX-1.3CMOS70184060010890004309006723
LP5951MFX-1.5CMOS70184060010890004309006723
LP5951MFX-1.8CMOS70184060010890004309006723
LP5951MFX-2.0CMOS70184060010890004309006723
LP5951MFX-2.5CMOS70184060010890004309006723
LP5951MFX-2.8CMOS70184060010890004309006723
LP5951MFX-3.0CMOS70184060010890004309006723
LP5951MFX-3.3CMOS70184060010890004309006723
LP5951MG-1.3CMOS70184060010890004309006723
LP5951MG-1.5CMOS70184060010890004309006723
LP5951MG-1.8CMOS70184060010890004309006723
LP5951MG-2.0CMOS70184060010890004309006723
LP5951MG-2.5CMOS70184060010890004309006723
LP5951MG-2.8CMOS70184060010890004309006723
LP5951MG-3.0CMOS70184060010890004309006723
LP5951MG-3.3CMOS70184060010890004309006723
LP5951MGX-1.3CMOS70184060010890004309006723
LP5951MGX-1.5CMOS70184060010890004309006723
LP5951MGX-1.8CMOS70184060010890004309006723
LP5951MGX-2.0CMOS70184060010890004309006723
LP5951MGX-2.5CMOS70184060010890004309006723
LP5951MGX-2.8CMOS70184060010890004309006723
LP5951MGX-3.0CMOS70184060010890004309006723
LP5951MGX-3.3CMOS70184060010890004309006723

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]