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iW3626

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Single-Stage, 10W Offline SSL LED Driver with High Power Factor and Low Ripple

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iW3626 Datasheet

Overview

The iW3626 integrates high power factor (PF), low output ripple and low total harmonic distortion (THD) in a single-stage solid-state lighting (SSL) LED driver for isolated and non-isolated applications up to 10W for 60W-equivalent non-dimmable LED replacement bulbs.

The iW3626 integrates a unique hybrid control scheme with a configurable power factor between >0.7 and >0.9 to manage the trade-off between PF and LED output current ripple. This unique feature enables high PF and low ripple from a low-cost solution.

The iW3626 reduces the BOM cost and solution size by incorporating Renesas' proprietary PrimAccurate™ technology, eliminating the need for a secondary side regulator and optical feedback isolator. Renesas' advanced technology allows for the functionality and performance of an 8-pin part in a small SOT23 6-pin package. It also uses lower-cost bipolar junction transistors (BJTs), so there is no need for high-voltage electrolytic capacitors.

iW3626 Functional Block Diagram
iW3626 Typical Applications Diagram
iW3626 Functional Block Diagram
iW3626 Typical Applications Diagram
  • Configurable PF to Manage Trade-Offs Between PF and Output Ripple
    • PF from >0.7 (Lower Ripple) to >0.9 (Higher Ripple)
  • Low THD <20%
  • Single-Stage LED Driver in SOT23 6-pin Package
    • Two Dual-Function Pins - Allows for Functionality of an 8-pin Part in a 6-pin Package
  • Ideal for 10W Offline Solid-State Lighting Applications
  • User-Configurable Internal LED Derating Over-Temperature Protection
    • Three Selectable Temperature Thresholds
    • Maintains Light Output in Fault Condition
    • Hysteresis Allows Smooth Transition Back to Normal Operation
  • Fully Protected
    • Overvoltage/Over-Temperature Protection
    • Output Overvoltage, Overcurrent and Short Circuit
    • Open LED Fault Detection
    • Sense-Resistor Short Circuit Protection

Documentation

Featured Documentation
Type Title Date
Datasheet
iW3626 Datasheet
Log in to Download PDF 1.13 MB
Product Brief
iW3626 Product Summary
PDF 515 KB
White Paper
Optimizing Operating Life for LED-based Light Bulbs
PDF 807 KB
White Paper
What is Digital Power White Paper
PDF 597 KB
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Design & Development

ECAD Models

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

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