Overview
Description
The iW1676 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 iW1676 integrates Renesas' PrimAccurate™ digital primary-side control, eliminating the need for the secondary-side optocoupler, and reducing component count and solution cost.
The iW1676 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 30mW. 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.
Features
- Easily meets DoE external power supply and EU Code of Conduct, Version 5, Tier 2 standards
- Less than 30mW no-load power consumption
- Low 1.7µA start-up current
- 64kHz PWM switching frequency
- Voltage offset compensation for voltage loss in cables and connectors (4 options)
- PrimAccurate™ - Primary-side control, no optocoupler needed
- Intrinsically low noise solution - No audible noise over the entire operating range
- Quasi-resonant control for optimal efficiency
- EZ-EMI™ design to easily meet global EMI specifications
- Fast dynamic load regulation
- Tiny SOT-23-5 package
- Fully protected from fault conditions
- Over-temperature protection
- Output overvoltage and overcurrent
- Input undervoltage protection
- Sense-resistor short circuit protection
Comparison
Applications
- Power adapters for portable electronics
- Consumer electronics power supplies
- Linear AC/DC power supply replacement
Documentation
Featured Documentation
Log in required to subscribe
|
|
|
|
|---|---|---|
| Type | Title | Date |
| Datasheet | PDF 974 KB | |
| White Paper | PDF 597 KB | |
2 items
|
||
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| SOT23-5L | Tape & Reel | 1 | Get Samples, |
Tips for Using This Parametric Table:
- Hide Filters button in header: Collapse or expands filters
- Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
- Reset button in header: Reset all filters to the page default
- Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
- Export button in header: Export the filtered results of the table to an Excel document
- Filter parts search bar in header: Type to filter table results by part number
- Hide column button in column headers: Select to hide columns in table
- AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
- Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
- Document icon next to product name in row: View the featured document for this product
- Chip icon next to the right of the document icon in row: View the block diagram for this product
- Cart icon to the right of the chip icon: Indicates that samples are available for this product