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LTC2945IUD-1#PBF - Analog Devices

Description: Current & Power Monitors & Regulators Wide Range I2C Power Monitor (/SDAO)

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LTC2945IUD-1#PBF - Analog Devices - PCB symbol
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LTC2945IUD-1#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UD Package 12-Lead Plastic QFN (3mm × 3mm)
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LTC2945IUD-1#PBF - Analog Devices - 3D model - Quad Flat No-Lead - UD Package 12-Lead Plastic QFN (3mm × 3mm)
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LTC2945IUD-1#PBF Details

  • Manufacturer Part Number:

    LTC2945IUD-1#PBF

  • Brand Name:

    Analog Devices Inc

  • Pbfree Code:

    No

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    3 X 3 MM, LEAD FREE, PLASTIC, MO-220WEED-1, QFN-12

  • Pin Count:

    12

  • Manufacturer Package Code:

    05-08-1855

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Adjustable Threshold:

    YES

  • Analog IC - Other Type:

    BATTERY PROTECTOR

  • JESD-30 Code:

    S-PQCC-N12

  • JESD-609 Code:

    e3

  • Length:

    3 mm

  • Moisture Sensitivity Level:

    1

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    12

  • Operating Temperature-Max:

    85 °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):

    80 V

  • Supply Voltage-Min (Vsup):

    2.7 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    3 mm

LTC2945IUD-1#PBF Frequently Asked Questions (FAQs)

  • A good PCB layout for the LTC2945 involves keeping the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes (e.g., VOUT and ISENSE). Use a solid ground plane, and keep the input and output capacitors close to the IC. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
  • Choose an inductor with a high saturation current rating, low DC resistance, and a high self-resonant frequency. The inductor value should be between 1.5μH and 3.3μH. A shielded inductor is recommended to reduce EMI. Consult the datasheet for specific inductor recommendations.
  • The LTC2945 is rated for operation from -40°C to 125°C. However, the maximum ambient temperature range depends on the specific application and the thermal design of the system. Consult the datasheet for thermal design considerations.
  • The LTC2945 has a built-in overcurrent protection feature. Connect a sense resistor (RSENSE) between the ISENSE pin and ground. The IC will limit the output current to a maximum of 1.5A (typical) when the voltage across RSENSE exceeds 50mV. Adjust RSENSE to set the desired overcurrent threshold.
  • Yes, the LTC2945 can be used in a synchronous buck configuration. Connect the SYNC pin to the drain of an external N-channel MOSFET. This allows the IC to control the external MOSFET as a synchronous rectifier, improving efficiency at light loads.

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LTC2945IUD-1#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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