特性
- Single-Stage Operation
- Output Power: 3W to 25W
- Low BOM Cost
- Uses Low-Cost, Off-the-Shelf Inductor
- Low External Component Count
- No Added Cost for Potting
- Widest Dimmer Compatibility
- TRIAC and Digital
- Automatic Detection of Dimmer Type
- Highest Performance Phase-Cut Dimming
- Excellent AC Line Distortion Immunity - Shimmer-Free Operation
- Wide Dimming Range: 1% to 100%
- Configurable Dimming Parameters
- High Power Factor (PF) >0.92
- Low Total Harmonic Distortion (THD) <20%
- Built-in, Configurable Over-Temperature Protection with Automatic Derating of LED Current
描述
The iW3689 is a single-stage, high-performance SSL LED driver offering smooth, flicker- and shimmer-free dimming performance and exceptional compatibility with an ultra-wide range of phase-cut dimmers, including the most challenging TRIAC and digital dimmers.
Renesas' patented digital algorithms eliminate more than 20 components, including the external bleeder circuit, enabling integrated active biasing for high-performance dimming at a lower BOM cost compared to conventional bleeder circuits. The iW3689 also works with off-the-shelf inductors to further reduce the BOM.
Full protection features include Renesas' unique over-temperature protection (OTP) derating, which monitors the temperature inside the sealed LED bulb and seamlessly reduces the drive to the LEDs if the temperature rises above a safe operating threshold, it then restores brightness as the temperature falls. The iW3689 integrates the temperature sensor and allows the user to configure the OTP thresholds.
For higher power applications, see the iW3600 and iW3605 LED driver pages.
产品参数
| 属性 | 值 |
|---|---|
| Function | Dimmable |
| Output Power Max (W) | 25 |
| Switching Frequency (KHz) | 200 - 200 |
| Optimal VIN (V) | 90 - 130, 200 - 264 |
| Stages | Single-Stage |
| Dim Range (Min) (%) | 1 |
| Dim Range (Max) (%) | 100 |
| Controller / Integrated | Controller |
| Key Features | PrimAccurate, EZ-EMI, PrimAccurate, EZ-EMI, Compact Design, PrimAccurate, EZ-EMI, Optimized for External LED Driver Applications, PrimAccurate, EZ-EMI, Optimized for Higher Power Applications, PrimAccurate, EZ-EMI, Optimized for Lower Power Applications |
| Protection Features | OVP, IOVP, SRSC, PCL/OCP, OTP |
| Peak Efficiency (%) | 85 |
| Dimmer Functions Supported | Leading Edge, Trailing Edge, Digital |
| Pass Device | FET |
| Power Factor Correction | >0.92 |
| LED Current Accuracy (%) | 5 |
| Output Power (Min) (W) | 1 |
应用
- Dimmable Retrofit Bulbs up to 25W: A-style, BR, candle, GU10, PAR
- External Lighting Ballast Drivers
- T8 LED Tubes
