LM2940QML-SP Space Grade 1A 5V Output Linear Regulator / LDO | TI.com


Space Grade 1A 5V Output Linear Regulator / LDO

Space Grade 1A 5V Output Linear Regulator / LDO - LM2940QML-SP


The LM2940 positive voltage regulator features the ability to source 1A of output current with a dropout voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3V).

Designed also for vehicular applications, the LM2940 and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940 cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.


  • Available with Radiation Ensure
    • ELDRS Free 100 krad(Si)
  • Dropout Voltage Typically 0.5V @IO = 1A
  • Output Current in Excess of 1A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection

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Parametrics Compare all products in Linear Regulators (LDOs)

Output Options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed Output Options (V)
Package Group
Operating Temperature Range (C)
Noise (uVrms)
Output Capacitor Type
PSRR @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
Fixed Output     Adjustable Output     Adjustable Output     Adjustable Output    
1     1.5     1.5     1    
26     60     40     26    
6     4.2     4.2     6    
5     1.25     1.3     20    
5     1.25     1.25     5    
5       1.8
-55 to 125     -55 to 125     -55 to 125     -55 to 125    
350       120      
Space     Space     Space     Space    
Non-Ceramic     Non-Ceramic
Cap Free    
Cap Free    
50     40       67    
5     4     0.3     5    
500     1500     1500     800    
10     5     5     10    
See datasheet (CFP)     See datasheet (CFP)
3TO: 92 mm2: 9.14 x 10.03(TO)    
See datasheet (CFP)
3TO: 92 mm2: 9.14 x 10.03(TO)
2TO: 989 mm2: 25.4 x 38.938(TO)    
See datasheet (CFP)    

Other qualified versions of LM2940QML-SP

Version Part Number Definition
Military LM2940QML QML certified for Military and Defense Applications