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IW339-00 - Renesas Electronics

Description: The iW339 is a secondary-side PWM signal generator that works with three types of dimming inputs: PWM dimming, 0V to 10V linear dimming, or simple dimming using a single resistor to ground from the DIM pin. The iW339 converts any of these three signals into a 1% to 100% PWM duty cycle output that provides a dimming signal to a primary-side LED driver such as the iW3636, eliminating the need for transformers or other driver circuitry.

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IW339-00 - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - 8 soic package-
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IW339-00 Details

  • Manufacturer Part Number:

    IW339-00

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    SOIC-8

  • HTS Code:

    8542.39.00.01

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • Analog IC - Other Type:

    ANALOG CIRCUIT

  • JESD-30 Code:

    R-PDSO-G8

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.23

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Seated Height-Max:

    1.75 mm

  • Supply Voltage-Max (Vsup):

    60 V

  • Supply Voltage-Min (Vsup):

    15 V

  • Surface Mount:

    YES

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Width:

    3.865 mm

IW339-00 Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide in their application note (APN) document, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance.
  • The IW339-00 has a built-in overcurrent protection feature that can be enabled by setting the OCP pin high. Additionally, external circuitry can be added to provide more advanced overcurrent protection, such as using a current sense resistor and a comparator to detect overcurrent conditions.
  • Renesas recommends using a low-ESR ceramic capacitor with a value of 10uF to 22uF for the input capacitor. The capacitor should be placed as close to the VIN pin as possible to minimize noise and ensure stable operation.
  • The output voltage of the IW339-00 can be adjusted by using a resistive divider network between the VOUT pin and the GND pin. The resistors should be chosen to provide the desired output voltage, and the values can be calculated using the formula provided in the datasheet.
  • The maximum ambient temperature rating for the IW339-00 is 85°C, but it can be derated to 70°C for high-reliability applications. It's essential to ensure proper thermal management and heat sinking to maintain a safe operating temperature.

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