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NCP81231MNTXG - onsemi

Description: Buck Regulator Positive Output Step-Down I2C DC-DC Controller IC 32-QFN (5x5) 4.5V ~ 28V 150kHz ~ 1.2MHz -40°C ~ 100°C

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PCB Footprints
NCP81231MNTXG - onsemi PCB footprint - Other - Other - QFN32 5x5, 0.5P CASE 485CE ISSUE O_2025-2.2
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NCP81231MNTXG - onsemi  - 3D model - Other - QFN32 5x5, 0.5P CASE 485CE ISSUE O_2025-2.2
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NCP81231MNTXG Details

  • Manufacturer Part Number:

    NCP81231MNTXG

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Not Recommended

  • Part Package Code:

    QFN-32

  • Manufacturer Package Code:

    485CE

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    20 Weeks

  • Date Of Intro:

    2017-12-11

  • Manufacturer:

    onsemi

  • YTEOL:

    3

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    28 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    S-XQCC-N32

  • JESD-609 Code:

    e3

  • Length:

    5 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    32

  • Operating Temperature-Max:

    100 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Voltage-Nom:

    5 V

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    HVQCCN

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    1200 kHz

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    5 mm

NCP81231MNTXG Frequently Asked Questions (FAQs)

  • A 2-layer or 4-layer PCB with a solid ground plane and thermal vias under the IC is recommended. This helps to dissipate heat efficiently and reduce thermal resistance.
  • Ensure that the input voltage rises and falls monotonically, and that the enable pin is properly driven to prevent unwanted start-up or shutdown. A soft-start circuit can also be used to reduce inrush current.
  • The maximum allowed input voltage ripple is 10% of the nominal input voltage. Exceeding this may affect the device's stability and reliability.
  • Use a combination of capacitors with different ESR values to filter out high-frequency noise and ripple. A minimum of 10uF ceramic capacitor and 10uF electrolytic capacitor in parallel is recommended.
  • A low-ESR ceramic capacitor with a value of 10uF to 22uF is recommended. This helps to reduce input voltage ripple and improve overall system stability.

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NCP81231MNTXG Overview

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