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L6997S - STMicroelectronics

Description: L6997S, Buck Controller Dual, 35V Step-Down, 20-Pin, TSSOP

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Symbol
L6997S - STMicroelectronics - PCB symbol
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PCB Footprints
L6997S - STMicroelectronics PCB footprint - Other - Other - TSSOP-20
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3D Models
L6997S - STMicroelectronics - 3D model - Other - TSSOP-20
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L6997S Details

  • Manufacturer Part Number:

    L6997S

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TSSOP

  • Package Description:

    MO-153-AC, TSSOP-20

  • Pin Count:

    20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    VOLTAGE-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    5.5 V

  • Input Voltage-Min:

    3 V

  • Input Voltage-Nom:

    3.3 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    6.5 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Equivalence Code:

    TSSOP20,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.2 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    500 kHz

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    NICKEL PALLADIUM GOLD

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    40

  • Width:

    4.4 mm

L6997S Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the L6997S is 42V, but it's recommended to keep it below 40V to ensure reliable operation.
  • The inductor value depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor value recommended in the datasheet, and then adjust it based on the specific requirements of your application.
  • The EN (Enable) pin is used to turn the device on or off. When the EN pin is high, the device is enabled, and when it's low, the device is disabled. You can use this pin to implement power sequencing or to turn off the device when it's not needed.
  • To ensure the L6997S operates within the recommended junction temperature range, you should provide adequate heat sinking, use a thermally conductive PCB material, and avoid operating the device at high ambient temperatures or with high power dissipation.
  • The recommended PCB layout for the L6997S involves keeping the high-frequency nodes (such as the switch node and the inductor) as close as possible to the device, using a solid ground plane, and minimizing the length of the traces to reduce EMI and noise.

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L6997S Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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