iW3622

iW3622

Single-Stage, 45W, Non-Dimmable Off-Line Flyback LED Driver with High PF and Low Ripple

Non-dimmable LED driver

The iW3622 integrates high power factor (PF), low output ripple and low total harmonic distortion (THD) in a single-stage SSL LED driver for isolated and non-isolated, high-power, non-dimmable LED replacement bulbs and LED ballasts.

The iW3622 integrates a unique hybrid control scheme with configurable power factor between >0.7 and >0.95, to manage the trade-off between PF and LED output current ripple. This unique feature enables high PF and low ripple in a low-cost solution. And, by using a MOSFET switch, the device is capable of driving LEDs in solutions up to 45W output power. The iW3622 reduces the BOM cost and solution size by incorporating Dialog’s proprietary PrimAccurate™ technology, eliminating the need for a secondary-side regulator and optical feedback isolator. Dialog's advanced technology allows for the functionality and performance of an 8-pin part in a small SOT23 6-pin package.

For Step-Down (Buck)-Only 45W Applications, see the iW3625

Features

  • Configurable PF to Manage Trade-Offs Between PF and Output Ripple
    • PF from >0.7 (Lower Ripple) to >0.95 (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 45W Off-Line Solid-State Lighting Applications

Features

  • User-Configurable LED Derating Over Temperature Protection
    • Works with an External NTC or Internal Sensor
    • Selectable Temperature Threshold and Derating Percentage
    • Maintains Light Output in Fault Condition
    • Hysteresis Allows Smooth Transition Back to Normal Operation
  • Fully Protected
    • Over-Voltage/Over-Temperature Protection
    • Output Over-Voltage, Over-Current and Short Circuit
    • Open LED Fault Detection
    • Sense-Resistor Short Circuit Protection

Applications

  • Solid State Lighting
  • LED Lighting Ballast

Block diagrams

Typical Applications Diagram
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Functional Block Diagram

We will provide up to five parts free of charge and our sales team will provide pricing for sample orders exceeding five parts. To initiate your request, please complete the form below.

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