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LTC3128EUFD#TRPBF - Analog Devices

Description: Switching Voltage Regulators 3A Monolithic Buck-Boost Supercapacitor Charger and Balancer with Accurate Input Current Limit

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LTC3128EUFD#TRPBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3128EUFD#TRPBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UFD - 20-Lead Plastic QFN (4mm x 5mm)
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LTC3128EUFD#TRPBF - Analog Devices - 3D model - Quad Flat No-Lead - UFD - 20-Lead Plastic QFN (4mm x 5mm)
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LTC3128EUFD#TRPBF Details

  • Manufacturer Part Number:

    LTC3128EUFD#TRPBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    4 X 5 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-220WXXX-X, QFN-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    05-08-1711

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • Additional Feature:

    OUTPUT VOLTAGE RANGE FROM 1.8 V TO 5.5 V

  • Analog IC - Other Type:

    SWITCHED CAPACITOR CONVERTER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    5.5 V

  • Input Voltage-Min:

    1.73 V

  • Input Voltage-Nom:

    3.3 V

  • JESD-30 Code:

    R-PQCC-N20

  • JESD-609 Code:

    e3

  • Length:

    5 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Output Current-Max:

    9 A

  • Output Voltage-Max:

    5.5 V

  • Output Voltage-Min:

    1.8 V

  • Output Voltage-Nom:

    4.8 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    1400 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Width:

    4 mm

LTC3128EUFD#TRPBF Frequently Asked Questions (FAQs)

  • The maximum input voltage that can be applied to the LTC3128EUFD is 38V, but it's recommended to keep it below 36V for reliable operation.
  • To optimize inductor selection, consider the inductor's saturation current, DC resistance, and core material. A good starting point is to choose an inductor with a saturation current at least 1.5 times the peak current, and a DC resistance less than 100mΩ.
  • To minimize noise and EMI, keep the input and output capacitors close to the IC, use a solid ground plane, and keep the high-frequency switching nodes (e.g., LX and SW) away from sensitive analog nodes. Also, use a shielded inductor and orient it to minimize radiation.
  • To configure the LTC3128EUFD for a specific output voltage, use the VOUT pin to set the output voltage. Connect a resistive divider from VOUT to GND, and calculate the resistor values using the formula: R1 = (VOUT - 0.8V) / 10μA and R2 = 0.8V / 10μA.
  • The thermal derating of the LTC3128EUFD is 26.3mW/°C. To calculate the maximum ambient temperature, use the formula: TAmax = TJmax - (PD / θJA), where TJmax is the maximum junction temperature (150°C), PD is the power dissipation, and θJA is the junction-to-ambient thermal resistance (45°C/W).

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LTC3128EUFD#TRPBF 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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