Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | SOT23-6L |
| Pkg. Code: | |
| Lead Count (#): | 6 |
| Pkg. Dimensions (mm): | |
| Pitch (mm): | 0.95 |
Environmental & Export Classifications
| Moisture Sensitivity Level (MSL) | 1 |
| Pb (Lead) Free | Yes |
| ECCN (US) | EAR99 |
| HTS (US) | 8542.39.0090 |
Product Attributes
| Lead Count (#) | 6 |
| Carrier Type | Tape & Reel |
| Moisture Sensitivity Level (MSL) | 1 |
| Pb (Lead) Free | Yes |
| Temp. Range (°C) | -40 to +125°C |
| Advanced Features | EZ-EMI, PrimAccurate |
| Application | Adapters, Chargers |
| Control Mode | Primary-Side Regulation Peak Current Mode DCM |
| Controller / Integrated | Controller |
| No Load Power (mW) | 20 |
| Output Power (Min) (W) | 1 |
| Output Power Max (W) | 5 |
| PWMs (#) | 1 |
| Parametric Category | Flyback & Forward Controllers |
| Pass Device | BJT |
| Pitch (mm) | 0.95 |
| Pkg. Type | SOT23-6L |
| Protection Features | OVP, SRSC, PCL/OCP, IUVP |
| Published | Yes |
| Qty. per Reel (#) | 3000 |
| Qualification Level | Standard |
| Switching Frequency (KHz) | 72 - 72 |
| Topology Characteristic | Flyback |
| UVLO Falling (V) | 4 |
| UVLO Rising (V) | 11 |
| VBIAS (Max) (V) | 16 |
Resources for iW1677
Description
The iW1677 is a high-performance AC/DC controller designed to drive a low-cost bipolar junction transistor (BJT) power switch in peak current mode PWM flyback power supplies up to 5W. Ideal for power adapters for smartphones, the iW1677 integrates Renesas' PrimAccurate™ digital primary-side control, eliminating the need for the secondary-side optocoupler, and reducing component count and solution cost.
The iW1677 integrates an active start-up circuit that allows for fast turn-on without impacting operating current consumption. The device easily meets the US DoE’s external power supply standard and the EU’s Code of Conduct, Version 5, Tier 2 standard, with a no-load power consumption of less than 20mW. 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.