Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | SO-10 Batwing |
| Pkg. Code: | |
| Lead Count (#): | 10 |
| 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 (#) | 10 |
| Moisture Sensitivity Level (MSL) | 1 |
| Temp. Range (°C) | -40 to +125°C |
| Advanced Features | AccuSwitch, EZ-EMI, PrimAccurate |
| Application | Embedded, Smart Meters |
| Control Mode | Primary-Side Regulation Peak Current Mode DCM |
| Controller / Integrated | Integrated |
| No Load Power (mW) | 50 |
| Output Power (Min) (W) | 1 |
| Output Power Max (W) | 12 |
| PWMs (#) | 1 |
| Parametric Category | Flyback & Forward Controllers |
| Pass Device | BJT |
| Pkg. Type | SO-10 Batwing |
| Protection Features | OTP, OVP, IUVP, PCL/OCP, SRSC |
| Qualification Level | Standard |
| Switching Frequency (KHz) | 72 - 72 |
| Topology Characteristic | Flyback |
| UVLO Falling (V) | 4.4 |
| UVLO Rising (V) | 14.5 |
| VBIAS (Max) (V) | 20 |
Resources for iW1821
Description
The iW1821 AccuSwitch™ digital PWM controller integrates a highly accurate control circuit with a 1200V bipolar junction transistor (BJT) power switch to provide a complete solution for off-line power conversion at up to 12W of output power.
Renesas' PrimAccurate™ primary-side digital control algorithms eliminate the need for failure-prone optocouplers and ensure excellent cross-regulation accuracy, to enable the longer operating lifetime, high performance and reduced cost required for industrial applications and appliances.
The output is designed to smoothly start-up into large capacitors while maintaining a quick turn-on time. It operates in quasi-resonant mode to optimize efficiency and incorporates a low-power mode that achieves <50mW of no-load power consumption to meet global energy efficiency regulations.