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TPS51275B-1RUKT - Texas Instruments

Description: TPS51275B-1 Dual Synchronous, Step-Down Controller With 5-V and 3.3-V LDOs, with 3.2ms soft start.

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TPS51275B-1RUKT - Texas Instruments - PCB symbol
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PCB Footprints
TPS51275B-1RUKT - Texas Instruments PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - RUK (S-PWQFN-N20)
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TPS51275B-1RUKT - Texas Instruments - 3D model - Quad Flat No-Lead - RUK (S-PWQFN-N20)
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TPS51275B-1RUKT Details

  • Manufacturer Part Number:

    TPS51275B-1RUKT

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    QFN

  • Pin Count:

    20

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    DUAL SWITCHING CONTROLLER

  • Control Mode:

    VOLTAGE-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    24 V

  • Input Voltage-Min:

    5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    S-PQCC-N20

  • JESD-609 Code:

    e4

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    20 A

  • Output Voltage-Max:

    5.1 V

  • Output Voltage-Min:

    4.85 V

  • Output Voltage-Nom:

    3.3 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    355 kHz

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

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

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.4 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    3 mm

TPS51275B-1RUKT Frequently Asked Questions (FAQs)

  • Texas Instruments provides a recommended PCB layout in the TPS51275B datasheet (section 10.2) and in the application note SLVAE03. It's essential to follow these guidelines to ensure optimal thermal performance and minimize thermal resistance.
  • The input capacitor selection depends on the input voltage, output voltage, and desired ripple current. TI recommends using a low-ESR capacitor with a minimum capacitance of 10uF and a voltage rating of at least 1.5 times the input voltage. Refer to the datasheet (section 7.3) for more information.
  • The maximum output current of the TPS51275B-1RUKT is 5A. However, it's essential to consider the thermal limitations and ensure that the device is properly cooled to maintain reliability and prevent overheating.
  • The TPS51275B-1RUKT is rated for operation up to 125°C (TJ). However, the device's performance and reliability may degrade at high temperatures. It's crucial to consider the thermal design and ensure proper cooling to maintain the device's performance and reliability.
  • The TPS51275B-1RUKT has a built-in overcurrent protection (OCP) feature. To implement OCP, connect a resistor (RILIM) between the ILIM pin and GND. The value of RILIM determines the OCP threshold. Refer to the datasheet (section 7.5) for more information.

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TPS51275B-1RUKT 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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