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LTC3851AIUD-1#PBF - Analog Devices

Description: n Wide VIN Range: 4V to 38V Operation n RSENSE or DCR Current Sensing n ±1% Output Voltage Accuracy n Power Good Output Voltage Monitor n Phase-Lockable Fixed Frequency: 250kHz to 750kHz n Dual N-Channel MOSFET Synchronous Drive n Very Low Dropout Operation: 99% Duty Cycle n Adjustable Output Voltage Soft-Start or Tracking n Output Current Foldback Limiting n Output Overvoltage Protection n OPTI-LOOP® Compensation Minimizes COUT n Selectable Continuous, Pulse-Skipping or Burst Mode® Operation at

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PCB Footprints
LTC3851AIUD-1#PBF - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - UD Package 16-Lead Plastic QFN (3mm × 3mm) (Reference LTC DWG # 05-08-1691)
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3D Models
LTC3851AIUD-1#PBF - Analog Devices  - 3D model - Quad Flat No-Lead - UD Package 16-Lead Plastic QFN (3mm × 3mm) (Reference LTC DWG # 05-08-1691)
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LTC3851AIUD-1#PBF Details

  • Manufacturer Part Number:

    LTC3851AIUD-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-2, QFN-16

  • Pin Count:

    16

  • Manufacturer Package Code:

    05-08-1691

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Additional Feature:

    ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8V TO 5.5V

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    38 V

  • Input Voltage-Min:

    4 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    S-PQCC-N16

  • JESD-609 Code:

    e3

  • Length:

    3 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:

    0.05 A

  • Output Voltage-Max:

    5.2 V

  • Output Voltage-Min:

    4.8 V

  • Output Voltage-Nom:

    5 V

  • 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

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    0.8 mm

  • Surface Mount:

    YES

  • Switcher Configuration:

    PUSH-PULL

  • Switching Frequency-Max:

    810 kHz

  • 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

LTC3851AIUD-1#PBF Frequently Asked Questions (FAQs)

  • The recommended PCB layout for the LTC3851AIUD-1#PBF involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a separate analog ground plane and to keep the power and ground traces separate to reduce noise and EMI.
  • The selection of input and output capacitors for the LTC3851AIUD-1#PBF depends on the specific application requirements. In general, low-ESR capacitors with a high ripple current rating are recommended. The input capacitor should be at least 10uF, and the output capacitor should be at least 22uF. The capacitor values can be adjusted based on the output voltage and current requirements.
  • The maximum ambient temperature range for the LTC3851AIUD-1#PBF is -40°C to 125°C. However, the device can operate up to 150°C with derating. It's essential to ensure that the device is operated within the recommended temperature range to ensure reliability and performance.
  • The LTC3851AIUD-1#PBF has a built-in overcurrent protection feature that can be enabled by connecting a resistor between the OCSET pin and the output voltage. The value of the resistor determines the overcurrent threshold. Additionally, an external current sense resistor can be used to monitor the output current and implement overcurrent protection.
  • The recommended input voltage range for the LTC3851AIUD-1#PBF is 4.5V to 38V. However, the device can operate up to 40V with derating. It's essential to ensure that the input voltage is within the recommended range to ensure reliability and performance.

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LTC3851AIUD-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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