1A Low Dropout Voltage Regulator 9V


$1.29 ea

  • Part no.: 1264041
  • Manufacturer: Texas Instruments
  • Manufacturer no.: LM2940T-9.0/NOPB
  • RoHS Compliant
  • NCNR (Non-Cancelable, Non Returnable)
# of units Price
45+ $1.29
225+ $1.15
450+ $1.04
  • Order in multiples of 45

1A Low Dropout Voltage Regulator, 9V

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/LM2940C 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/LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.


  • 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
  • P+ Product Enhancement tested

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  • Specification Value
    Supplier PackageTO-220
    Output TypeFixed
    Line Regulation90mV
    Load Regulation90mV
    Typical Dropout Voltage @ Current[email protected][email protected]
    Maximum Dropout Voltage @ Current[email protected][email protected]
    Minimum Input Voltage10.5V
    Maximum Input Voltage26V
    Output Voltage9V
    Maximum Output Current1A(Typ)
    Maximum Quiescent Current15mA
    Number of Outputs1
    Typical Quiescent Current10mA
    Junction to Ambient60C/W(Typ)
    Junction to Case4C/W(Typ)
    Minimum Operating Temperature-40°C
    Maximum Operating Temperature125°C
    MountingThrough Hole
    Product Width4.7mm(Max)
    Product Height8.89mm(Max)
    Product Length10.16mm
    Product TypeLinear Regulator

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