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iW1691-08 - Renesas Electronics

Description: The iW1691 is a high-performance AC/DC controller designed to drive an N-channel power MOSFET for peak current mode PWM flyback power supplies. Ideal for power adapters for applications such as mobile computing and communications and standby power supplies in consumer electronics, the iW1691 meets the US DoE's external power supply standard and the EU's Code of Conduct, Version 5, Tier 1 efficiency standard with no load power consumption less than 100mW. As a PrimAccurate™ controller, which uses primary-sid

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iW1691-08 - Renesas Electronics - PCB symbol
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iW1691-08 - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - (8 LD SOIC)-000
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iW1691-08 - Renesas Electronics - 3D model - Small Outline Packages - (8 LD SOIC)-000
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iW1691-08 Details

  • Manufacturer Part Number:

    IW1691-08

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    SOIC-8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    16 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G8

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max (Isup):

    5 mA

  • Surface Mount:

    YES

  • Switching Frequency-Max:

    140 kHz

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Width:

    3.9 mm

iW1691-08 Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide in their application note (R01AN4393EJ0100) which includes thermal vias, thermal pads, and heat sink recommendations to ensure optimal thermal performance.
  • The IW1691-08 has a built-in overcurrent protection feature that can be enabled by setting the OCP pin high. Additionally, an external overcurrent protection circuit can be implemented using a sense resistor and a comparator to detect overcurrent conditions.
  • Renesas recommends using a 10uF to 22uF ceramic capacitor with an X7R or X5R dielectric as the input capacitor. The capacitor should be placed as close as possible to the VIN pin to minimize noise and ensure stable operation.
  • The output voltage of the IW1691-08 can be adjusted by using a resistive divider network between the VOUT pin and the GND pin. The resistors should be chosen to provide a stable output voltage within the specified range (0.8V to 3.3V).
  • The maximum ambient temperature for the IW1691-08 is 85°C. However, the device can operate up to 105°C with derating. It's essential to ensure proper thermal design and heat sinking to maintain reliable operation.

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iW1691-08 Overview

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