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LTC4120IUD-4.2#PBF - Analog Devices

Description: LINEAR TECHNOLOGY - LTC4120IUD-4.2#PBF - Battery Charger for 1 Cell of Li-Ion, Li-Pol battery, 40V input, 4.2V / 421mA charge, QFN-16

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LTC4120IUD-4.2#PBF - Analog Devices - PCB symbol
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PCB Footprints
LTC4120IUD-4.2#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UD Package 16-Lead Plastic QFN (3mm × 3mm)
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LTC4120IUD-4.2#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UD Package 16-Lead Plastic QFN (3mm × 3mm)
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LTC4120IUD-4.2#PBF Details

  • Manufacturer Part Number:

    LTC4120IUD-4.2#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    QFN-16

  • Pin Count:

    16

  • Manufacturer Package Code:

    05-08-1691

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    8.5

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    LINEAR BATTERY CHARGER

  • JESD-30 Code:

    S-PQCC-N16

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    2

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • 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

  • Supply Voltage-Max (Vsup):

    40 V

  • Supply Voltage-Min (Vsup):

    12.5 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    3 mm

LTC4120IUD-4.2#PBF Frequently Asked Questions (FAQs)

  • The recommended PCB layout for the LTC4120IUD-4.2#PBF can be found in the application note AN140, which provides guidelines for layout, component placement, and thermal management to ensure optimal performance and reliability.
  • The sense resistor value depends on the maximum current rating of the battery and the desired accuracy of the current measurement. A general guideline is to choose a sense resistor value that results in a voltage drop of 10-50mV at the maximum current rating. The datasheet provides a formula to calculate the sense resistor value based on the maximum current rating and the desired accuracy.
  • The maximum operating temperature range for the LTC4120IUD-4.2#PBF is -40°C to 125°C, but the device can be operated up to 150°C with reduced performance and reliability. It's essential to ensure proper thermal management and heat sinking to maintain the device within the recommended operating temperature range.
  • The LTC4120IUD-4.2#PBF is optimized for lithium-ion batteries, but it can be used with other battery chemistries such as nickel-cadmium (NiCd) or nickel-metal hydride (NiMH) with some modifications to the charging algorithm and voltage settings. However, it's essential to consult with Analog Devices Inc. or a qualified engineer to ensure the device is properly configured and optimized for the specific battery chemistry.
  • The LTC4120IUD-4.2#PBF has a built-in OVP feature that can be enabled by connecting the OVP pin to a voltage source. The OVP threshold can be set by selecting the appropriate resistor values for the OVP pin. The datasheet provides a formula to calculate the OVP threshold voltage based on the resistor values.

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LTC4120IUD-4.2#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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