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NSC LM340T-15 Voltage Regulator 15Volts

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National Semiconductor (Acquired by Texas Instruments) LM340T-15 Linear Voltage Regulator IC Positive Fixed Output 15V 1A TO-220-3

NSC LM340T-15 Voltage Regulator 15Volts

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LM340T-15 Linear Voltage Regulator, Fixed, Positive, 7.5V To 35V In, 15V And 1A Out, TO-220-3


  • V REG +15V, TO-220-3, 340
  • Dropout voltage:2.9V
  • No. of Outputs:1
  • No. of Pins:3
  • Voltage Regulator IC Case Style:TO-220
  • Operating Temperature Range:0°C to +125°C
  • SVHC:No SVHC (18-Jun-2010)
  • Case Style:TO-220
  • Max Operating Temperature:125°C
  • Min Temperature Operating:0°C
  • Base Number:340
  • IC Generic Number:340
  • Max Input Voltage:35V
  • Max Output Current:1A
  • Max Output Voltage:15V
  • Max Supply Voltage:30V
  • Min Input Voltage:17.9V
  • Min Supply Voltage:17.5V
  • Operating Voltage Tolerance +:2%
  • Percentage Accuracy:2%
  • Termination Type:Through Hole
  • Voltage Regulator Type:Positive Fixed
  • Output Voltage:15V
  • Voltage:15V
The LM340T-15 is a monolithic 3-terminal Positive Voltage Regulator employs internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents. Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.
  • Complete specifications at 1A load
  • Internal thermal overload protection
  • Internal short-circuit current limit
  • Output transistor safe area protection
  • P+ Product enhancement tested


Power Management

Additional Information

Manufacturer: National Semiconductor (Acquired by Texas Instruments)
Click here to Download Datasheet I
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