LP2951 30V, 100mA Micropower Voltage Regulators with Shutdown | TI.com

LP2951 (ACTIVE)

30V, 100mA Micropower Voltage Regulators with Shutdown

30V, 100mA Micropower Voltage Regulators with Shutdown - LP2951
Datasheet
LP295x Adjustable Micropower Voltage Regulators with Shutdown datasheet (Rev. I)
 

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

View more

Parametrics Compare all products in Linear regulators (LDO)

 
Output options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed output options (V)
Package Group
Features
Regulated outputs (#)
Operating temperature range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. price (US$)
Rating
Output capacitor type
PSRR @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
LP2951 LP2950 LP2950-N LP2951-N
Adjustable Output
Fixed Output    		 Fixed Output     Fixed Output     Adjustable Output
Fixed Output    
0.1     0.1     0.1     0.1    
30     30     30     30    
2     2     2.3     2.3    
29     5     5     29    
1.2     3     3     1.24    
3
3.3
5    		 3
3.3
5    		 3
3.3
5    		 3
3.3
5    
SOIC | 8
SON | 8    		 TO-92 | 3     TO-252 | 3
TO-92 | 3    		 PDIP | 8
SOIC | 8
VSSOP | 8
WSON | 8    
Enable
Power Good    
   
   		 Enable
Power Good    
1     1     1     1    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
52     97     51     43    
160     100     100     160    
0.18 | 1ku     0.12 | 1ku     0.25 | 1ku     0.25 | 1ku    
Catalog     Catalog     Catalog     Catalog    
Non-Ceramic     Ceramic     Ceramic     Ceramic    
57     57     51     51    
3     3     3     2.5    
380     110     380     380    
0.075     0.075     0.075     0.075    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
See datasheet (SON)    		 3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3)     3TO-252: 40 mm2: 6.1 x 6.58 (TO-252 | 3)
3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3)    		 See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)
See datasheet (WSON)    

Design tool

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WEBENCH® Power Designer is now even easier to use. Try it now.

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

What are WEBENCH® tools?