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BD9781HFP-TR - ROHM Semiconductor

Description: Switching Voltage Regulators IC REG SW 4A P-CH MOSF STDN

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BD9781HFP-TR - ROHM Semiconductor PCB footprint - Other - Other - HRP-7
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BD9781HFP-TR - ROHM Semiconductor  - 3D model - Other - HRP-7
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BD9781HFP-TR Details

  • Manufacturer Part Number:

    BD9781HFP-TR

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    MODULE

  • Pin Count:

    7

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    10 Weeks

  • Manufacturer:

    ROHM Semiconductor

  • YTEOL:

    0

  • Additional Feature:

    ALSO OPERATES IN ADJUSTABLE MODE FROM 1V TO 35V

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    35 V

  • Input Voltage-Min:

    7 V

  • Input Voltage-Nom:

    13.2 V

  • JESD-30 Code:

    R-PSSO-G7

  • Length:

    9.395 mm

  • Number of Functions:

    1

  • Number of Terminals:

    7

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    4 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HSOP

  • Package Equivalence Code:

    SMSIP7H,.4,50TB

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG

  • Packing Method:

    TR

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.005 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    500 kHz

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    SINGLE

  • Width:

    8 mm

BD9781HFP-TR Frequently Asked Questions (FAQs)

  • ROHM recommends a 2-layer or 4-layer PCB with a thermal relief pattern under the IC to improve heat dissipation. A minimum of 1 oz copper thickness is recommended for the PCB.
  • To ensure stable operation with a high-ESR output capacitor, add a 10nF to 22nF ceramic capacitor in parallel with the output capacitor to reduce the ESR effect.
  • The maximum allowed voltage on the EN pin is 6V. Exceeding this voltage may damage the IC.
  • Yes, a ceramic capacitor can be used for the input capacitor (CIN), but ensure it has a low ESR and is rated for the maximum input voltage.
  • The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESR) / (f * Cout), where Iout is the output current, ESR is the output capacitor's equivalent series resistance, f is the switching frequency, and Cout is the output capacitance.

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