USB电源保护芯片

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CW3042 USB充电控制&负载开关芯片

The CW3042 is the USB charging controller IC integrated output current limitation function.CW3042 is fully compatible with BC1.2 and other non-BC1.2 standards like YT/D1591-2009, Apple charging specification (for i-Pad & i-Phones) and specs from Samsung Galaxy family.The IC is used to facilitate charging procedure when most of the mainstream handheld devices are detected. A 73mΩ power-distribution switch is integrated to provide protection from port in-rush current or short-circuit. Current limit threshold can be programmed via the external resistor.The CW3042 is suitable for all the charger products using USB interface like power bank, wall adapter and even MID device with OTG function. The IC is provided with enhanced ESD protection up to +/-8kV with application on D+/D- Pins.

Features
• 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
• 73mΩ Ultra Low RDSON
• Operating Voltage Range: 4.5V to 5.5V
• Adjustable Current Limit Up to 3A
• Power Consumption
  - 2uA When Device is Disabled
  - 135uA When Device is Enabled 8kV HBM ESD Rating on D+/D- Pins
Operating Temperature:  -40°C to 85°C
Max. Continuous Output Current: 2.8A
Max. Overcurrent Protection Current: 3.17A

Lead(Pb)-Free, Halogen-Free, DFN3*3-12 Package

Applications
• Wall Charging Adapters
• Power bank
• USB Ports (Hosts and Hubs)
• Other USB charging devices


Contact sales@cellwise-semi.com for information of the CW3046.

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