USB Power / Protection IC

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CW3047 USB Charging Port Controller & Load Switch

The CW3047 is the USB charging controller IC integrated output current limitationfunction.CW3047 is fully compatible with BC1.2 and other non-BC1.2 standards like YD/T1591-2009, Apple charging specification (for iPad & iPhones) and specs from Samsung Galaxy family.The IC is used to facilitate charging procedure when most of the mainstream handheld devices are detected.A 21mΩ power-distribution switch is integrated to provide protection from port in-rush current or short-circuit.The CW3047 is suitable for all the charger products using USB interface like power bank, wall adapter, multi-port USB adapter. The IC is provided with enhanced ESD protection up to +/-8kV with application on D+/D-Pins.


• D+/D- DCP Mode per USB Battery Charging Specification 1.2

• D+/D- Short Mode per Telecommunication Industry Standard YD/T1591-2009 (Chinese)

• Supports non-BC1.2 Charging Modes by Automatic Selection

   -D+/D-Option for Apple Device

   -D+/D-Option for Samsung Device

• Integrated High Side NMOS Switch

• 21mΩ Ultra Low RDSON

• Operating Voltage Range: 4.5V to 5.5V

• 2.7A Current Limit

• Power Consumption

  -10μA When Device is Disabled

  -380μA When Device is Enabled

• 8kV HBM ESD Rating on D+/D- Pins

• Lead (Pb)-Free, Halogen-Free, eMSOP10 Package 


• Wall Charging Adapters

• Power bank

• USB Ports (Hosts and Hubs)

• Other USB charging devices 

Typical Application

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