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

View more

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    
New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.
Loading Data Loading...
WEBENCH® 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  
Footprint BOM Cost Efficiency
 
   
Explore Now
What are WEBENCH® tools?

Related products

Part # Name Product Family Comments
ATL431   2.5V Low Iq Adjustable Precision Shunt Regulator   VOLTAGE REFERENCE - SHUNT VOLTAGE REFERENCE    Low quiescent current reference is used for isolation power supplies, which are typically used as an input for this LDO.  
TPL7407L   40V, 7-Channel NMOS Array, Low Side Driver   OTHER INTERFACE - PERIPHERAL DRIVER AND ACTUATOR    NMOS 7-Channel peripheral drivers, which are commonly used to drive relays or to replace discrete fets in the system.  
Click Here