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PM6644TR - STMicroelectronics

Description: Switching Voltage Regulators 350 mA adj step-down 4.5 to 25V -40, 150c

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PM6644TR - STMicroelectronics - PCB symbol
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PM6644TR - STMicroelectronics PCB footprint - Small Outline No-lead - Small Outline No-lead - PM6644TR
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PM6644TR - STMicroelectronics - 3D model - Small Outline No-lead - PM6644TR
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PM6644TR Details

  • Manufacturer Part Number:

    PM6644TR

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    TDFN-10

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    16 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    7.7

  • Additional Feature:

    ADJUSTABLE OUTPUT RANGE FROM 0.9 VOLT TO 8 VOLT

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    25 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    S-PDSO-N10

  • Length:

    3 mm

  • Number of Functions:

    1

  • Number of Terminals:

    10

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.35 A

  • Output Voltage-Max:

    8 V

  • Output Voltage-Min:

    0.9 V

  • Output Voltage-Nom:

    3.47 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVSON

  • Package Equivalence Code:

    SOLCC10,.11,20

  • Package Shape:

    SQUARE

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    NOT SPECIFIED

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    600 kHz

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

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

    NOT SPECIFIED

  • Width:

    3 mm

PM6644TR Frequently Asked Questions (FAQs)

  • STMicroelectronics provides a recommended PCB layout in the application note AN4571, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
  • The input capacitor selection depends on the input voltage, ripple current, and ESR requirements. A general guideline is to choose a capacitor with a voltage rating of at least 1.5 times the maximum input voltage, and an ESR of less than 1 ohm. STMicroelectronics recommends using a ceramic capacitor with an X7R or X5R dielectric.
  • The maximum allowed voltage drop across the internal FETs is not explicitly stated in the datasheet. However, according to STMicroelectronics' application notes, a voltage drop of up to 1.5V is considered acceptable, but it's recommended to keep it below 1V to ensure optimal efficiency and reliability.
  • The PM6644TR is rated for operation up to 150°C, but it's essential to consider the derating curves and thermal management guidelines provided in the datasheet and application notes. Proper heat sinking, thermal interface materials, and airflow can help ensure reliable operation in high-temperature environments.
  • STMicroelectronics provides a troubleshooting guide in the application note AN4571, which covers common issues, such as over-temperature shutdown, undervoltage lockout, and output voltage regulation. Additionally, using oscilloscopes, voltage meters, and thermal imaging cameras can help identify and diagnose problems.

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PM6644TR 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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