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LMR51420XDDCR - Texas Instruments

Description: Switching Voltage Regulators SIMPLE SWITCHER power converter 4.5-V to 36-V, 2-A, synchronous buck with 40-uA IQ

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PCB Footprints
LMR51420XDDCR - Texas Instruments PCB footprint - SOT23 (6-Pin) - SOT23 (6-Pin) - DDC
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3D Models
LMR51420XDDCR - Texas Instruments  - 3D model - SOT23 (6-Pin) - DDC
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LMR51420XDDCR Details

  • Manufacturer Part Number:

    LMR51420XDDCR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE FREQUENCY MODULATION

  • Input Voltage-Max:

    36 V

  • Input Voltage-Min:

    4.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G6

  • JESD-609 Code:

    e3

  • Length:

    2.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Outputs:

    1

  • Number of Terminals:

    6

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    2 A

  • Output Voltage-Max:

    34.2 V

  • Output Voltage-Min:

    0.6 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSOP

  • Package Equivalence Code:

    TSOP6,.11,37

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.1 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK

  • Switching Frequency-Max:

    1100 kHz

  • Technology:

    BICMOS

  • Terminal Finish:

    Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.95 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    1.6 mm

LMR51420XDDCR Frequently Asked Questions (FAQs)

  • A 2-layer or 4-layer PCB with a solid ground plane and thermal vias under the device can help to dissipate heat efficiently. It's also recommended to keep the thermal path short and use a thermal pad on the bottom of the device.
  • To ensure stability, it's essential to follow the recommended component values and PCB layout guidelines. Additionally, a low-ESR output capacitor and a high-quality input capacitor can help to prevent oscillations.
  • Although the datasheet specifies a maximum input voltage of 42V, it's recommended to derate the input voltage to 36V to ensure reliable operation and prevent damage to the device.
  • While ceramic capacitors can be used, they may not be the best choice due to their potential for piezoelectric noise and microphonic effects. A low-ESR electrolytic or polymer capacitor is recommended for the output filter capacitor.
  • The power dissipation can be calculated using the formula: Pd = (Vin - Vout) x Iout x Efficiency. The efficiency can be estimated from the datasheet's efficiency vs. output current graph.

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LMR51420XDDCR 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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