LM3940IMPX-3.3/NOPB by Texas Instruments | LDO Regulators | Avnet ASIA
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LM3940IMPX-3.3/NOPB

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) SOT-223 T/R

Manufacturer Part #: LM3940IMPX-3.3/NOPB

Alternate Part #: LM3940IMPX-3.3/NOPB


RoHS Compliant

Descriptions

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Information

The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply.

The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V logic, with prime power provided from a 5-V bus.

Because the LM3940 is a true low dropout regulator, it can hold its 3.3-V output in regulation with input voltages as low as 4.5 V.

The TO-220 package of the LM3940 means that in most applications the full 1 A of load current can be delivered without using an additional heatsink.

The surface mount DDPAK/TO-263 package uses minimum board space, and gives excellent power dissipation capability when soldered to a copper plane on the PC board.

Key Features

  • Input Voltage Range: 4.5 V to 5.5 V
  • Output Voltage Specified over Temperature
  • Excellent Load Regulation
  • Specified 1-A Output Current
  • Requires only One External Component
  • Built-in Protection against Excess Temperature
  • Short-Circuit Protected
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Output Voltage
    3.3 V
    Supplier Package
    SOT-223
    Function
    LDO
    Product Dimensions
    6.5 x 3.56 x 1.6 mm
    Operating Temperature
    -40 to 125 °C
    Number of Outputs
    1
    Minimum Input Voltage
    4.5 V
    Max Processing Temp
    260
    Mounting
    Surface Mount
    Maximum Output Current
    1 A
    Load Regulation
    50 mV
    Lead Finish
    Tin
    Polarity
    Positive
    Maximum Quiescent Current
    15 mA
    Typical Quiescent Current
    10 mA
    Line Regulation
    40 mV
    MSL Level
    1
    Input Voltage Range
    7.5 to 4.5 V
    Maximum Input Voltage
    7.5 V
    Maximum Dropout Voltage @ Current
    0.8@1A|0.15@100mA V
    Output Type
    Fixed
    Pin Count
    4
    Typical Dropout Voltage @ Current
    0.5@1A|0.11@100mA V

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99
    SCHEDULE B:
    8542390000"

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