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LMZ31503RUQT - Texas Instruments

Description: Texas Instruments, LMZ31503RUQT DC-DC Converter 3A Adjustable, 0.8 → 5.5 V, 47-Pin BQFN

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PCB Footprints
LMZ31503RUQT - Texas Instruments PCB footprint - Other - Other - RUQ (R-PB1QFN-N47)
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3D Models
LMZ31503RUQT - Texas Instruments  - 3D model - Other - RUQ (R-PB1QFN-N47)
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LMZ31503RUQT Details

  • Manufacturer Part Number:

    LMZ31503RUQT

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Input Voltage-Max:

    14.5 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PQCC-N47

  • JESD-609 Code:

    e4

  • Length:

    15 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    47

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    3 A

  • Output Voltage-Max:

    5.5 V

  • Output Voltage-Min:

    0.8 V

  • Output Voltage-Nom:

    1.8 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HQCCN

  • Package Equivalence Code:

    LCC47,.35X.59,35

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG

  • Peak Reflow Temperature (Cel):

    245

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.9 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    780 kHz

  • Technology:

    HYBRID

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.9 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    9 mm

LMZ31503RUQT Frequently Asked Questions (FAQs)

  • A 2-layer or 4-layer PCB with a solid ground plane and thermal vias is recommended. Keep the thermal pads connected to the ground plane to improve heat dissipation.
  • Use a high-quality output capacitor with low ESR, and ensure the feedback resistors are 1% tolerance or better. Also, decouple the input voltage with a capacitor to reduce noise.
  • The maximum input voltage is 18V, but it's recommended to keep it below 15V to ensure reliable operation and minimize power dissipation.
  • Yes, the device is rated for operation up to 125°C, but ensure proper thermal design and heat sinking to prevent overheating.
  • Use an external current-sensing resistor and a fuse or a current-limiting circuit to protect the device from overcurrent conditions.

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LMZ31503RUQT Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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