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UC3856DW - Texas Instruments

Description: Texas Instruments UC3856DW, PWM Current Mode Controller, Dual 1.5 A, 220 kHz 16-Pin SOIC

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PCB Footprints
UC3856DW - Texas Instruments PCB footprint - Other - Other - SOIC127P1030X265-16N
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3D Models
UC3856DW - Texas Instruments  - 3D model - Other - SOIC127P1030X265-16N
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UC3856DW Details

  • Manufacturer Part Number:

    UC3856DW

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Not Recommended

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    40 V

  • Input Voltage-Min:

    8 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    10.365 mm

  • Moisture Sensitivity Level:

    2

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    2 A

  • Output Voltage-Max:

    5.2 V

  • Output Voltage-Min:

    5 V

  • Output Voltage-Nom:

    5.1 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.64 mm

  • Supply Current-Max (Isup):

    23 mA

  • Supply Voltage-Max (Vsup):

    40 V

  • Supply Voltage-Min (Vsup):

    7.7 V

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    1000 kHz

  • Technology:

    BICMOS

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.5 mm

UC3856DW Frequently Asked Questions (FAQs)

  • It is recommended to follow a star-grounding configuration, keep the input and output stages separate, and use a multi-layer PCB with a solid ground plane to minimize EMI and noise. Additionally, place the IC close to the input capacitors and keep the feedback trace short and direct.
  • To ensure stability, make sure to follow the recommended compensation network values, use a low-ESR output capacitor, and keep the feedback loop gain below 1. Also, avoid using long feedback traces and keep the input and output stages decoupled.
  • The UC3856DW can handle input voltages up to 40V, but it's recommended to keep the input voltage below 30V to ensure reliable operation and minimize the risk of damage.
  • The UC3856DW is rated for operation up to 125°C, but it's recommended to derate the output power and current at high temperatures to ensure reliable operation. Also, consider using a heat sink to dissipate heat and reduce the junction temperature.
  • Use an oscilloscope to monitor the output voltage and current, and check for signs of oscillation or instability. Verify that the input voltage and current are within the recommended range, and check the compensation network values. Also, ensure that the PCB layout and component placement are correct.

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UC3856DW Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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