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LTC3129IMSE#PBF - Analog Devices

Description: Regulates VOUT Above, Below or Equal to VIN n Wide VIN Range: 2.42V to 15V, 1.92V to 15V After Start-Up (Bootstrapped) n Wide VOUT Range: 1.4V to 15.75V n 200mA Output Current in Buck Mode n Single Inductor n 1.3µA Quiescent Current n Programmable Maximum Power Point Control n 1.2MHz Ultralow Noise PWM n Current Mode Control n Pin Selectable Burst Mode® Operation n Up to 95% Efficiency n Accurate RUN Pin Threshold n Power Good Indicator n 10nA Shutdown Current n Thermally Enhanced 3mm × 3mm Q

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LTC3129IMSE#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3129IMSE#PBF - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - MSE Package 16-Lead Plastic MSOP, Exposed Die Pad (Reference LTC DWG # 05-08-1667 Rev F)
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3D Models
LTC3129IMSE#PBF - Analog Devices - 3D model - Small Outline Packages - MSE Package 16-Lead Plastic MSOP, Exposed Die Pad (Reference LTC DWG # 05-08-1667 Rev F)
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LTC3129IMSE#PBF Details

  • Manufacturer Part Number:

    LTC3129IMSE#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Pin Count:

    16

  • Manufacturer Package Code:

    05-08-1667

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Additional Feature:

    ADJUSTABLE OUTPUT MODE FROM 1.4 TO 15.75 VOLT; CURRENT MODE ALSO AVAILABLE

  • Analog IC - Other Type:

    SWITCHING REGULATOR

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    15 V

  • Input Voltage-Min:

    1.92 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e3

  • Length:

    4.039 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.68 A

  • Output Voltage-Nom:

    4.1 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.1 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    1400 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3 mm

LTC3129IMSE#PBF Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the VIN pin is 18V, but it's recommended to keep it below 15V for optimal performance and to prevent damage to the internal components.
  • To optimize the inductor selection, consider the following factors: inductance value, DC resistance, and saturation current. A higher inductance value can reduce the ripple current, but may increase the size and cost of the inductor. A good starting point is to choose an inductor with an inductance value between 1.5uH to 3.3uH, and a saturation current rating above the peak current of the converter.
  • For optimal performance, it's recommended to follow a star-grounding layout, where the GND pins of the IC are connected to a central ground point. Keep the high-current paths (VIN, VOUT, and SW) short and wide, and avoid routing them near sensitive analog signals. Also, place the input and output capacitors close to the IC, and use a solid ground plane to reduce EMI.
  • To troubleshoot the LTC3129, first check the input voltage and ensure it's within the recommended range. Verify that the feedback resistors are correctly connected and that the output voltage is not overloaded. Check the inductor for saturation or overheating, and ensure that the PCB layout is correct. If the issue persists, try replacing the IC or checking for any damage to the internal components.
  • The LTC3129 is rated for operation up to 125°C, but its performance may degrade at high temperatures. To ensure reliable operation, it's recommended to derate the output current and input voltage at high temperatures. Also, consider using a heat sink or thermal interface material to reduce the junction temperature of the IC.

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LTC3129IMSE#PBF Overview

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About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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