Features
- Ideal for 25W Off-Line Solid-State Lighting Applications
- High PF (>0.95) and Low THD (<15%)
- PrimAccurate™ - Isolated Off-Line AC/DC Controller
- Integrates Renesas' Flickerless™ Technology
- Removes Virtually All LED Flicker
- Less than 20% Output Ripple at 100Hz/120Hz
- 45Hz to 66Hz Line Frequency Range - 50Hz/60Hz Compatible
- Broad Range of Dimmer Capability
- Leading Edge, Trailing Edge, Digital Dimmers and Occupancy Sensors and Timers
- Automatic Detection of Dimmer Type and Phase
- 1% to 100% Wide Dimming Range
- Automatically Detects and Operates without Dimmer
- Quasi-resonant Mode for Optimal Efficiency
- Compatible with SSL Industry Standards
- Zhaga Hot-Plug Standard
- NEMA SSL 6 Dimming Standard for Incandescent Replacement
- Fully Protected
- Works from DC Voltage Emergency Back-Up System
- NTC-based Temperature Derating Circuit
- Overvoltage/Over-Temperature Protection
- Output Overvoltage, Overcurrent and Short Circuit
- Open LED Fault Detection
- Sense-Resistor Short Circuit Protection
Description
The iW3617 two-stage solid-state lighting (SSL) LED driver combines high power factor (PF >0.95), low THD (<15%) and low output ripple (<20%) for residential and commercial dimmable retrofit LED luminaires up to 25W. By using a bipolar junction transistor (BJT) power device, reducing component count for the protection circuits, and using lower-cost electrolytic capacitors, the iW3617 enables a very low overall BOM cost.
The iW3617 is compatible with the IEC 61000-3-2 specification for electromagnetic compatibility (EMC), the Zhaga hot-plug standard, and incorporates mapping options that fall within the NEMA SSL 6 dimming curves. It also uses Renesas' patented, intelligent digital dimming to automatically detect the dimmer type and phase, enabling broad compatibility with analog and digital dimmers.
Renesas' unique over-temperature protection (OTP) derating circuit monitors an external NTC resistor; reduces the output drive to the LEDs in small, virtually imperceptible increments; then restores brightness as the temperature falls. This prevents exceeding the temperature rating of the electrolytic capacitors and helps ensure a predictable, safer bulb operating life.
Parameters
| Attributes | Value |
|---|---|
| Function | Dimmable |
| Output Power Max (W) | 25 |
| Switching Frequency (KHz) | 200 - 200 |
| No Load Power (mW) | 300 |
| Optimal VIN (V) | 90 - 130, 200 - 264 |
| Stages | Two-Stage |
| Dim Range (Min) (%) | 1 |
| Dim Range (Max) (%) | 100 |
| Dimming Frequency (Hz) | 900 |
| Controller / Integrated | Controller |
| Key Features | PrimAccurate, Flickerless, EZ-EMI |
| Protection Features | OVP, IOVP, UVLO, PCL/OCP, SRSC |
| Peak Efficiency (%) | 85 |
| Dimmer Functions Supported | Leading Edge, Trailing Edge, No Dimmer Support |
| Pass Device | FET |
| Power Factor Correction | >0.95 |
| LED Current Accuracy (%) | 5 |
| Output Power (Min) (W) | 8 |
Package Options
| Pkg. Type | Lead Count (#) | Pitch (mm) |
|---|---|---|
| SOIC-14 | 14 | 1.27 |
Applications
- Dimmable LED Ballasts and Luminaires up to 25W
- Dimmable Retrofit Lamps up to 25W