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LM7909CT - onsemi

Description: Regulator -9V 1A 4% Protection T0-220

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PCB Footprints
LM7909CT - onsemi PCB footprint - Transistor Outline, Vertical - Transistor Outline, Vertical - TO220 ISSUE K AB
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LM7909CT - onsemi  - 3D model - Transistor Outline, Vertical - TO220 ISSUE K AB
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LM7909CT Details

  • Manufacturer Part Number:

    LM7909CT

  • Brand Name:

    ON Semiconductor

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Package Description:

    TO-220AB, 3 PIN

  • Manufacturer Package Code:

    340AT

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Adjustability:

    FIXED

  • Dropout Voltage1-Nom:

    2 V

  • Input Voltage Absolute-Max:

    35 V

  • Input Voltage-Max:

    26 V

  • Input Voltage-Min:

    11.5 V

  • JESD-30 Code:

    R-XSFM-T3

  • JESD-609 Code:

    e3

  • Line Regulation-Max:

    0.18%

  • Load Regulation-Max:

    0.18%

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    3

  • Operating Temperature TJ-Max:

    125 °C

  • Output Current1-Max:

    1 A

  • Output Voltage1-Max:

    9.4 V

  • Output Voltage1-Min:

    8.6 V

  • Output Voltage1-Nom:

    9 V

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    SFM

  • Package Equivalence Code:

    SIP3,.1TB

  • Package Shape:

    RECTANGULAR

  • Package Style:

    FLANGE MOUNT

  • Qualification Status:

    Not Qualified

  • Regulator Type:

    FIXED NEGATIVE SINGLE OUTPUT STANDARD REGULATOR

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Terminal Finish:

    Tin (Sn)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    SINGLE

  • Voltage Tolerance-Max:

    4%

LM7909CT Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the LM7909CT is 35V, but it's recommended to keep it below 30V for reliable operation.
  • The LM7909CT is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and voltage at high temperatures.
  • To ensure stability, use a minimum output capacitance of 10uF, and keep the output voltage within the recommended range of 8.5V to 12V. Also, avoid using long output wires and minimize the distance between the regulator and the load.
  • No, the LM7909CT is a linear regulator and not suitable for switching power supply designs. It's designed for low-power, low-dropout applications where high efficiency is not critical.
  • The minimum input voltage required for the LM7909CT to regulate properly is 11V, but it's recommended to keep the input voltage at least 2V higher than the output voltage for reliable operation.

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