Overview

The iW3620 is a high-performance AC/DC power supply controller for applications up to 40W of output power, optimized for driving LEDs from an AC supply voltage. Designed to operate from a universal input voltage range of 85VAC to 264VAC, the iW3620 can be used across all voltage standards worldwide.

The iW3620 uses Renesas' proprietary PrimAccurate™ primary-side control technology, minimizing the external component count by removing the need for both the traditional opto-isolator and external compensation components, reducing solution size and cost. The device operates in quasi-resonant mode in order to optimize efficiency at heavy loads and uses pulse-by-pulse waveform analysis to offer loop response characteristics superior to traditional offline solutions. The iW3620 is fully protected and incorporates Renesas' EZ-EMI® technology to facilitate EMI management in the end application, giving the end-user an easy-to-design and robust solution for solid-state lighting.

iW3620 Functional Block Diagram
iW3620 Typical Applications Diagram
iW3620 Functional Block Diagram
iW3620 Typical Applications Diagram
  • PrimAccurate™ - Isolated Offline AC/DC Controller
  • EZ-EMI Design to Easily Meet Global EMI Specifications
  • Ideal for Offline LED Applications up to 40W
  • Universal Input Power Supply Range - 85VAC to 264VAC
  • Up to 130kHz Switching Frequency, Enables Small Adapters
  • Quasi-resonant Mode for Optimal Efficiency
  • Low 10µA Start-Up Current
  • Programmable Over-temperature Protection - External NTC Thermistor
  • Built-in Output Overvoltage Protection
  • Sense Resistor Short Circuit Protection
  • Open Circuit Protection

Applications

  • Solid-State Lighting
  • 40W LED Luminaires

Documentation

= Featured Documentation
Type Title Date
Datasheet
iW3620 Datasheet
PDF 1.37 MB
White Paper
Challenges on Solid-State Lighting Offline Driver Design
PDF 1.94 MB
White Paper
Optimizing Operating Life for LED-based Light Bulbs
PDF 807 KB
White Paper
What is Digital Power White Paper
PDF 597 KB
4 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Buy / Sample
    Part Number
    IW3620-00
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    Samples Available
    		 SOIC-8-EP Tape & Reel 3 Get Samples,
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