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RT7257GHZSP - RICHTEK

Description: IC REG BUCK ADJUSTABLE 3A 8SOP

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Symbol
RT7257GHZSP - RICHTEK - PCB symbol
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PCB Footprints
RT7257GHZSP - RICHTEK PCB footprint - Small Outline Packages - Small Outline Packages - 8-Lead SOP
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3D Models
RT7257GHZSP - RICHTEK - 3D model - Small Outline Packages - 8-Lead SOP
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RT7257GHZSP Details

  • Manufacturer Part Number:

    RT7257GHZSP

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    PSOP-8

  • Manufacturer Package Code:

    PSOP-8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Richtek Technology Corp

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • JESD-30 Code:

    R-PDSO-G8

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    3 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    YES

  • Switching Frequency-Max:

    800 kHz

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

RT7257GHZSP Frequently Asked Questions (FAQs)

  • A 4-layer PCB with a solid ground plane and a thermal relief pattern on the top layer is recommended. Ensure a minimum of 2 oz copper thickness and a thermal via array under the IC to dissipate heat efficiently.
  • Use the recommended compensation network values in the datasheet as a starting point. Then, adjust RCOMP and CCOMP based on the specific application's load transient requirements. A smaller RCOMP and larger CCOMP can improve transient response, but may compromise stability.
  • The RT7257GHZSP can tolerate up to 10% of the input voltage as ripple. Exceeding this may cause instability or affect the converter's performance. Use input capacitors with low ESR to minimize voltage ripple.
  • Choose an inductor with a low Q factor (e.g., < 10) to ensure stability. If a high-Q inductor is used, add a damping resistor (Rd) in series with the inductor to reduce the Q factor and prevent oscillations.
  • A soft-start time of 1-2 ms is recommended to prevent inrush currents and ensure a smooth startup. Adjust the soft-start time based on the specific application's requirements.

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RT7257GHZSP Overview

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