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Linear Regulators (LDO) | LP2951
概览
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%.
- Automotive
- Avionics: RADAR
- AC Analog Input Module
- Logistics Robot CPU Board
- Optical Line Card
- Wide Input Range: Up to 30 V
- Rated Output Current of 100 mA
- Low Dropout 50 mV at 100 mA and 380 mV at 100 mA
- Low Quiescent Current: 75 µA (Typ)
- Requires Only a 1.0 mF Output Capacitor for Stability
- Internal Current and Thermal Limiting
- LP2951 also has Error(bar) Output Signals an Out of Regulation Condition
- LP2951 also has Output Programmable from 1.25 V to 29 V
- LP2951 also has Logic Level Shutdown Input
- Extremely Tight Line and Load Regulation
- 5.0 V, 3.3 V or 3.0 V +/- 0.5%
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Obsolete
Pb
A
H
P
SOIC-8
1
260
TUBE
98
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
LP2951ACD-3.0R2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.21
More Details
Last Shipments
Pb
A
H
P
SOIC-8
1
260
TUBE
98
N
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
LP2951ACD-3.3R2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.2248
More Details
Obsolete
Pb
A
H
P
SOIC-8
1
260
TUBE
98
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
LP2951ACDM-3.0RG
Active
Pb
A
H
P
Micro8
1
260
REEL
4000
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.2567
More Details
LP2951ACDM-3.3RG
Active
Pb
A
H
P
Micro8
1
260
REEL
4000
N
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.2833
More Details
LP2951ACDMR2G
Active
Pb
A
H
P
Micro8
1
260
REEL
4000
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.22
More Details
LP2951ACDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.2171
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
Last Shipments
Pb
A
H
P
SOIC-8
1
260
TUBE
98
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
LP2951CD-3.0R2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.2304
More Details
Obsolete
Pb
A
H
P
SOIC-8
1
260
TUBE
98
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
LP2951CD-3.3R2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.2253
More Details
Obsolete
Pb
A
H
P
SOIC-8
1
260
TUBE
98
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
Obsolete
Pb
A
H
P
Micro8
1
260
REEL
4000
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
Obsolete
Pb
A
H
P
Micro8
1
260
REEL
4000
N
Single
Positive
3.3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
LP2951CDMR2G
Active
Pb
A
H
P
Micro8
1
260
REEL
4000
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.2904
More Details
LP2951CDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
$0.22
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Single
Positive
3
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
Obsolete
Pb
A
H
P
PDIP-8
NA
0
TUBE
50
N
Single
Positive
Adj
0.1
2.3
30
0.35
0.093
48
56
Yes
Yes
Industrial
Price N/A
More Details
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