Single Output LDO, 100mA, Adjustable, Wide Vin Range, RESET Flag - LP2951

LP2951 (ACTIVE)

Single Output LDO, 100mA, Adjustable, Wide Vin Range, RESET Flag

 

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
Additional Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
LP2951 LP2951-30 LP2951-33 LP2951-50
0.1    0.1    0.1    0.1   
Adjustable Output    Fixed Output    Fixed Output    Fixed Output   
2    3.4    3.7    5.4   
30    30    30    30   
  3    3.3    5   
1.2    3    3.3    5   
29    3    3.3    5   
0.075    0.075    0.075    0.075   
380    380    380    380   
2    2    2    2   
160    160    160    160   
53    53    53    53   
Non-Ceramic    Non-Ceramic    Non-Ceramic    Non-Ceramic   
Overcurrent Protection
Thermal Shutdown   
Overcurrent Protection
Thermal Shutdown   
Overcurrent Protection
Thermal Shutdown   
Overcurrent Protection
Thermal Shutdown   
Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
8SOIC    8SOIC
8SON   
8SOIC
8SON   
8SOIC
8SON   
0.18 | 1ku    0.18 | 1ku    0.18 | 1ku    0.18 | 1ku   
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WEBENCH® Designer LP2951

  Min   Max Range
Vin  V 2.3 to 30.0V
Vout  V 1.23 to 29.0V
Iout  A ≤ 0.1A
Ambient Temp  °C -40 to 125°C


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