LP2950 Adjustable Micropower Voltage Regulator With Shutdown | TI.com

LP2950 (ACTIVE)

Adjustable Micropower Voltage Regulator With Shutdown

Adjustable Micropower Voltage Regulator With Shutdown - LP2950
 

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
LP2950 LP2950-N LP2951 LP2951-N
0.1     0.1     0.1     0.1    
Fixed Output     Fixed Output     Adjustable Output
Fixed Output    
Adjustable Output
Fixed Output    
2     2.3     2     2.3    
30     30     30     30    
3
3.3
5    
3
3.3
5    
3
3.3
5    
3
3.3
5    
3     3     1.2     1.24    
5     5     29     29    
0.075     0.075     0.075     0.075    
110     380     380     380    
3     3     3     2.5    
100     100     160     160    
57     51     57     51    
Ceramic     Ceramic     Non-Ceramic     Ceramic    
Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
3TO-92     3TO-252
3TO-92    
8SOIC
8SON    
8PDIP
8SOIC
8VSSOP
8WSON    

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