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LP2951: LDO Regulator, 100 mA, 30V, Micropower, with Shutdown

Datasheet: Voltage Regulator - Low Power Low, Dropout 100 mA
Rev. 32 (255kB)
Product Overview
»View Reliability Data
»View Material Composition
» Product Change Notification
The LP2950 and LP2951 are micropower low dropout (LDO) linear voltage regulators that are specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential. These devices feature a very low quiescent bias current of 75 µA and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided.

The LP2951 LDO linear voltage regulator has three additional features. The first is the Errorbar Output that can be used to signal external circuitry of an out of regulation condition, or as a microprocessor power-on reset. The second feature allows the output voltage to be preset to 5.0 V, 3.3 V or 3.0 V output (depending on the version) or programmed from 1.25 V to 29 V. It consists of a pinned out resistor divider along with direct access to the Error Amplifier feedback input. The third feature is a Shutdown input that allows a logic level signal to turn-off or turn-on the regulator output.

Due to the low input-to-output voltage differential and bias current specifications, these devices are ideally suited for battery powered computer, consumer, and industrial equipment where an extension ofuseful battery life is desirable. The LP2950 is available in the three pin case 29 and DPAK packages, and the LP2951 is available in the eight pin dual-in-line, SO-8 and Micro-8 surface mount packages.

The 'A' suffix devices feature an initial output voltage tolerance +/-0.5%.
Features   Benefits
     
  • Wide Input Range: Up to 30 V
 
  • Enables use with 24V rail
  • Rated Output Current of 100 mA
 
  • Sufficient power capability for MCU
  • Low Dropout 50 mV at 100 mA and 380 mV at 100 mA
 
  • Lower thermal impact than Vreg
  • Low Quiescent Current: 75 µA (Typ)
 
  • Longer battery life
  • Requires Only a 1.0 mF Output Capacitor for Stability
 
  • Small size, low cost system
  • Internal Current and Thermal Limiting
 
  • Built-in protection features
  • LP2951 also has Error(bar) Output Signals an Out of Regulation Condition
 
  • Enhanced protection capability
  • LP2951 also has Output Programmable from 1.25 V to 29 V
 
  • Flexibility for various end product applications
  • LP2951 also has Logic Level Shutdown Input
 
  • Enhanced protection capability
  • Extremely Tight Line and Load Regulation
 
  • Accurate system level design capability
  • 5.0 V, 3.3 V or 3.0 V +/- 0.5%
 
  • Allows Use as a Regulator or Reference
Applications   End Products
  • Automotive
  • Avionics: RADAR
 
  • AC Analog Input Module
  • Logistics Robot CPU Board
  • Optical Line Card
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (3)
Availability & Samples
Specifications
Case Outlines
Interactive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
LP2951ACD-3.0G Lifetime
Pb-free
Halide free
LP2951, Vout: 3.0 V; 0.5% SOIC-8 751-07 1 260 Tube 98 $0.2441
LP2951ACD-3.0R2G Active
Pb-free
Halide free
LP2951, Vout: 3.0 V; 0.5% SOIC-8 751-07 1 260 Tape and Reel 2500 $0.1984
LP2951ACD-3.3G Lifetime
Pb-free
Halide free
LP2951, Vout: 3.3 V; 0.5% SOIC-8 751-07 1 260 Tube 98 $0.3197
LP2951ACD-3.3R2G Active
Pb-free
Halide free
LP2951, Vout: 3.3 V; 0.5% SOIC-8 751-07 1 260 Tape and Reel 2500 $0.2207
LP2951ACDG Obsolete
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 0.5% SOIC-8 751-07 1 260 Tube 98  
LP2951ACDM-3.0RG Active
Pb-free
Halide free
LP2951, Vout: 3.0 V; 0.5% Micro8 846A-02 1 260 Tape and Reel 4000 $0.2933
LP2951ACDM-3.3RG Active
Pb-free
Halide free
LP2951, Vout: 3.3 V; 0.5% Micro8 846A-02 1 260 Tape and Reel 4000 $0.2833
LP2951ACDMR2G Active
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 0.5% Micro8 846A-02 1 260 Tape and Reel 4000 $0.2691
LP2951ACDR2G Active
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 0.5% SOIC-8 751-07 1 260 Tape and Reel 2500 $0.2005
LP2951ACN-3.0G Last Shipments
Pb-free
Halide free
LP2951, Vout: 3.0 V; 0.5% PDIP-8 626-05 NA Tube 50 $0.3
LP2951ACN-3.3G Last Shipments
Pb-free
Halide free
LP2951, Vout: 3.3 V; 0.5% PDIP-8 626-05 NA Tube 50 $0.3199
LP2951ACNG Last Shipments
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 0.5% PDIP-8 626-05 NA Tube 50 $0.2885
LP2951CD-3.0G Lifetime
Pb-free
Halide free
LP2951, Vout: 3.0 V; 1.0% SOIC-8 751-07 1 260 Tube 98 $0.206
LP2951CD-3.0R2G Active
Pb-free
Halide free
LP2951, Vout: 3.0 V; 1.0% SOIC-8 751-07 1 260 Tape and Reel 2500 $0.2304
LP2951CD-3.3G Lifetime
Pb-free
Halide free
LP2951, Vout: 3.3 V; 1.0% SOIC-8 751-07 1 260 Tube 98 $0.2237
LP2951CD-3.3R2G Active
Pb-free
Halide free
LP2951, Vout: 3.3 V; 1.0% SOIC-8 751-07 1 260 Tape and Reel 2500 $0.1731
LP2951CDG Obsolete
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 1.0% SOIC-8 751-07 1 260 Tube 98  
LP2951CDM-3.0R2G Lifetime
Pb-free
Halide free
LP2951, Vout: 3.0 V; 1.0% Micro8 846A-02 1 260 Tape and Reel 4000 $0.2305
LP2951CDM-3.3R2G Lifetime
Pb-free
Halide free
LP2951, Vout: 3.3 V; 1.0% Micro8 846A-02 1 260 Tape and Reel 4000 $0.29
LP2951CDMR2G Active
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 1.0% Micro8 846A-02 1 260 Tape and Reel 4000 $0.29
LP2951CDR2G Active
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 1.0% SOIC-8 751-07 1 260 Tape and Reel 2500 $0.1621
LP2951CN-3.0G Last Shipments
Pb-free
Halide free
LP2951, Vout: 3.0 V; 1.0% PDIP-8 626-05 NA Tube 50  
LP2951CN-3.3G Last Shipments
Pb-free
Halide free
LP2951, Vout: 3.3 V; 1.0% PDIP-8 626-05 NA Tube 50 $0.2672
LP2951CNG Last Shipments
Pb-free
Halide free
LP2951, Vout: 5.0 or Adj.; 1.0% PDIP-8 626-05 NA Tube 50 $0.2775
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >1K
ON Semiconductor   (2020-09-02 00:00) : 11,172
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 12,549
Market Leadtime (weeks) : Contact Factory
FutureElectronics   (2020-08-19 00:00) : <1K
Avnet   (2020-08-19 00:00) : <1K
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <1K
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >10K
FutureElectronics   (2020-08-19 00:00) : >10K
PandS   (2020-09-14 00:00) : >10K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 5,150
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 23,050
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : 13 to 16
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 30,576
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >1K
PandS   (2020-09-14 00:00) : <1K
FutureElectronics   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : <100
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : >10K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : >10K
FutureElectronics   (2020-08-19 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Avnet   (2020-08-19 00:00) : <1K
Market Leadtime (weeks) : Contact Factory
FutureElectronics   (2020-08-19 00:00) : <1K
ON Semiconductor   (2020-09-02 00:00) : 18,400

Product
Description
Pricing ($/Unit)
Compliance
Status
Output
Polarity
VO (V)
IO Typ (A)
VI Min (V)
VI Max (V)
VDO Typ (V)
Iq Typ (mA)
PSRR (dB)
Noise (µVrms)
Enable
PowerGood
Application
Package Type
LP2951ACD-3.0R2G  
 $0.1984 
Pb
H
 Active   
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
SOIC-8
LP2951ACD-3.3R2G  
 $0.2207 
Pb
H
 Active   
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
SOIC-8
LP2951ACDM-3.0RG  
 $0.2933 
Pb
H
 Active   
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Micro8
LP2951ACDM-3.3RG  
 $0.2833 
Pb
H
 Active   
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Micro8
LP2951ACDMR2G  
 $0.2691 
Pb
H
 Active   
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Micro8
LP2951ACDR2G  
 $0.2005 
Pb
H
 Active   
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
SOIC-8
LP2951CD-3.0R2G  
 $0.2304 
Pb
H
 Active   
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
SOIC-8
LP2951CD-3.3R2G  
 $0.1731 
Pb
H
 Active   
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
SOIC-8
LP2951CDMR2G  
 $0.29 
Pb
H
 Active   
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Micro8
LP2951CDR2G  
 $0.1621 
Pb
H
 Active   
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
SOIC-8
Case Outlines
751-07    626-05    846A-02   
Packages
LP2951: LDO Regulator, 100 mA, 30V, Micropower, with Shutdown
Application
Diagram - Block
Previously Viewed Products
Clear List

New Products

NCV8730  150 mA LDO Regulator

  • Low quiescent current of 1 µA typical, and shutdown current of 100 nA typical
  • Wide operating input voltage range of 2.7 to 38 V
  • Low dropout of 290 mV typical @ 150 mA, 3.3 V

NCV8187  1.2 A LDO Regulator

  • Low Iq of 30 µA typical over full temperature range
  • High PSRR of 85 dB at 1 kHz for power stability
  • Low noise of 9 µV(RMS)

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