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5W-7.5W MediaTek Pump Express™-Compatible Digital PWM AC/DC Controller

Not Recommended for New Designs


Single-chip power and communication IC; up to 7.5W

The iW1680 is a single-chip solution that supports 5W and 7.5W output power and uses Dialog's intelligent Rapid Charge™ digital algorithm and digital PrimAccurate™ primary-side control to significantly reduce charge times in USB AC/DC power adapters with no additional bill of materials cost versus slower conventional charging technologies.

The iW1680 is highly efficient, and offers no-load standby power <30mW, meeting the US Department of Energy's external power supply efficiency requirements and Version 5, Tier 2 of the EU’s Code of Conduct for external power supplies.  The iW1680 also offers a full array of protection features including overvoltage, short circuit and over-temperature protection.


Supports MediaTek Pump Express™ fast charge protocol

7.5W PrimAccurate™ isolated off-line controller

  • Eliminates secondary-side regulator and optical feedback isolator

Built-in digital intelligence on primary side for intelligent dynamic voltage scaling to optimize charge time

Meets DoE External Power Supply and EU Code of Conduct Version 5, Tier 2 standards

  • <30mW no-load power consumption

Adaptive Multi-Mode PWM/PFM control improves efficiency

No audible noise over the entire operating range

Active start-up scheme enables fastest possible start-up

Cable drop compensation - different options available

Low EMI design

No external compensation needed

Fully protected from fault conditions

  • Over-temperature protection
  • Output short circuit
  • Output low impedance
  • Output overvoltage


Compact AC/DC power adapters for portable electronics

Rapid Charge™ adapters for smartphones

Linear AC/DC replacement

pump express

MediaTek's Pump Express protocol enables up to 45% faster charging times (compared to conventional chargers) for feature phones, smartphones and media tablets. Conventional USB adapters provide 5V to the handset, which requires a buck converter to convert that 5V down to a usable voltage level by the phone. Using Dialog’s rapid charge technology, the output voltage of the iW1680 scales as needed by the system, reducing charging time and lowering system cost by removing the need for an input buck converter.

For a MediaTek Pump Express Plus-compatible controller up to 36W output power, see iW1788.

Block Diagrams


Typical applications diagram


Functional block diagram

To order a sample of any of our products, please complete the following form. We will provide up to five parts free of charge. Our sales department will provide pricing for samples orders exceeding five parts.

Sample Request Form

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Product Briefs and Summaries
Name Date Version
iW1680 Product Summary (431.71 KB) 16/04/2014 0.6