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LTC3897EUHF#PBF - Analog Devices

Description: Boost Regulator Positive Output Step-Up DC-DC Controller IC 38-QFN (5x7) , Surface Mount , 4.5V ~ 65V , 75kHz ~ 850kHz , -40°C ~ 125°C (TJ)

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LTC3897EUHF#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC3897EUHF#PBF - Analog Devices PCB footprint - Other - Other - UHF Package 38-Lead Plastic QFN (5mm × 7mm) (Reference LTC DWG # 05-08-1701 Rev C)
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3D Models
LTC3897EUHF#PBF - Analog Devices - 3D model - Other - UHF Package 38-Lead Plastic QFN (5mm × 7mm) (Reference LTC DWG # 05-08-1701 Rev C)
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LTC3897EUHF#PBF Details

  • Manufacturer Part Number:

    LTC3897EUHF#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-38

  • Pin Count:

    38

  • Manufacturer Package Code:

    05-08-1701

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    75 V

  • Input Voltage-Min:

    4.2 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PQCC-N38

  • JESD-609 Code:

    e3

  • Length:

    7 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    8 A

  • Output Voltage-Max:

    60 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC38,.2X.28,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Seated Height-Max:

    0.8 mm

  • Supply Current-Max (Isup):

    1.3 mA

  • Supply Voltage-Nom (Vsup):

    12 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BOOST

  • Switching Frequency-Max:

    585 kHz

  • Technology:

    CMOS

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.8 mm

  • Terminal Position:

    QUAD

  • Width:

    5 mm

LTC3897EUHF#PBF Frequently Asked Questions (FAQs)

  • The maximum operating temperature range for the LTC3897EUHF#PBF is -40°C to 125°C, as specified in the datasheet. However, it's recommended to derate the device's performance at higher temperatures to ensure reliable operation.
  • To ensure the stability of the output voltage in a high-current application, it's essential to follow proper PCB layout guidelines, use adequate decoupling capacitors, and ensure that the input voltage is well-regulated. Additionally, consider using a output capacitor with a low equivalent series resistance (ESR) to minimize output voltage ripple.
  • The recommended input capacitor value is 10uF to 22uF, with a voltage rating of at least 2x the input voltage. A low-ESR ceramic capacitor, such as an X5R or X7R type, is recommended to minimize input voltage ripple and ensure stable operation.
  • The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESR) / (fsw * Cout), where Iout is the output current, ESR is the output capacitor's equivalent series resistance, fsw is the switching frequency, and Cout is the output capacitance. A lower output voltage ripple can be achieved by using a larger output capacitor with a lower ESR.
  • The maximum output current capability of the LTC3897EUHF#PBF is 7A, as specified in the datasheet. However, the actual output current capability may be limited by the thermal performance of the device and the PCB layout. It's essential to ensure that the device is properly heatsinked and that the PCB layout is optimized for high-current operation.

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LTC3897EUHF#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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