LP2951 (ACTIVE)

30V, 100mA Micropower Voltage Regulators with Shutdown

30V, 100mA Micropower Voltage Regulators with Shutdown - LP2951
 

Recommended alternative parts

  • LP2950  - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.   Has lower pin count and fixed voltage option

Description

The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V.

Features

  • Wide Input Range: Up to 30 V
  • Rated Output Current of 100 mA
  • Low Dropout: 380 mV (Typ) at 100 mA
  • Low Quiescent Current: 75 µA (Typ)
  • Tight Line Regulation: 0.03% (Typ)
  • Tight Load Regulation: 0.04% (Typ)
  • High VO Accuracy
    • 1.4% at 25°C
    • 2% Over Temperature
  • Can Be Used as a Regulator or Reference
  • Stable With Low ESR (>12 mΩ) Capacitors
  • Current- and Thermal-Limiting Features
  • LP2950 Only (3-Pin)
    • Fixed-Output Voltages of 5 V, 3.3 V, and 3 V
  • LP2951 Only (8-Pin Package)
    • Fixed- or Adjustable-Output Voltages:
      5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ
    • Low-Voltage Error Signal on Falling Output
    • Shutdown Capability
    • Remote Sense Capability for Optimal Output
      Regulation and Accuracy

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Parametrics Compare all products in Single Channel LDO

 
Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Rating
Operating Temperature Range (C)
Pin/Package
LP2951 LP2950 LP2950-N LP2951-N
0.1    0.1    0.1    0.1   
Adjustable Output
Fixed Output   
Fixed Output    Fixed Output    Adjustable Output
Fixed Output   
2    2    2.3    2.3   
30    30    30    30   
3
3.3
5   
3
3.3
5   
3
3.3
5   
3
3.3
5   
1.2    3    3    1.24   
29    5    5    29   
0.075    0.075    0.075    0.075   
380    110    380    380   
3    3    3    2.5   
160    100    100    160   
57    57    51    51   
Non-Ceramic    Ceramic    Ceramic    Ceramic   
Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
8SOIC
8SON   
3TO-92    3TO-252
3TO-92   
8PDIP
8SOIC
8VSSOP
8WSON   

Other qualified versions of LP2951

Version Part Number Definition
Automotive LP2951-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
New! Interactive Design
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WEBENCH® Designer LP2951

  Min   Max Range
Vin  V 2.3 to 30.0V
Vout  V 1.235 to 29V
Iout  A ≤ 0.1A
Ambient Temp  °C -40 to 125°C


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