Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | SOT23-5L |
| Pkg. Code: | |
| Lead Count (#): | 5 |
| Pkg. Dimensions (mm): | |
| Pitch (mm): |
Environmental & Export Classifications
| Moisture Sensitivity Level (MSL) | 1 |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
| Pb (Lead) Free |
Product Attributes
| Lead Count (#) | 5 |
| Moisture Sensitivity Level (MSL) | 1 |
| Temp. Range (°C) | -40 to +125°C |
| Application | Adapters, Chargers |
| Control Mode | Primary-Side Regulation Peak Current Mode DCM |
| Controller / Integrated | Controller |
| MOQ | 3000 |
| No Load Power (mW) | 30 |
| Output Power (Min) (W) | 1 |
| Output Power Max (W) | 30 |
| PWMs (#) | 1 |
| Parametric Category | Flyback & Forward Controllers |
| Pass Device | FET |
| Pkg. Type | SOT23-5L |
| Qty. per Reel (#) | 3000 |
| Qualification Level | Standard |
| Switching Frequency (KHz) | 64 - 64 |
| Topology Characteristic | PSR Flyback |
| UVLO Falling (V) | 4.1 |
| UVLO Rising (V) | 10.5 |
| VBIAS (Max) (V) | 16 |
Resources for iW1678
Description
The iW1678 is a high-performance AC/DC controller designed to drive an external power bipolar junction transistor (BJT) for peak current mode PWM flyback power supplies. Ideal for wall adapters in portable electronics and power supplies for consumer electronics, the iW1678 offers no-load power consumption of less than 150mW, capable of being reduced down to 30mW with little effort, making it capable of meeting global energy efficiency standards. As a PrimAccurate™ controller, which uses primary-side control algorithms, the iW1678 does not need any direct secondary-side feedback components, eliminating the need for optocouplers, and reducing component count and solution cost. Additional features include Renesas' proprietary EZ-EMI™ technology, quasi-resonant control for optimal efficiency at heavy loads, cable and connector voltage drop compensation options, full protection from fault conditions, and tiny packaging.
