SMSC Introduces Small Footprint, USB 2.0 Switches with Multiplexing, Port Protection & Battery Charger Detection

The latest mobile devices, with their reduced size and minimal number of connectors, enable a single port of connectivity for transferring USB data and USB charging. SMSC's low-power USB3750 Port Protection and Detection device is specifically designed for mobile embedded applications where a shared USB connection is required. Leveraging SMSC's RapidCharge Anywhere functionality, the USB3750 can be used to seamlessly provide USB Battery Charging detection as well as detect industry standard SE1 type chargers. The device provides system VBUS protection and offers over-voltage and under-voltage lock-out features for system voltage customization. The USB3750 includes an integrated Hi-Speed USB 2.0 switch allowing for two signal paths to connect to the single point of connectivity. The pin count has been minimized, making the device well-suited for mobile, battery-powered systems where power consumption, small package size, and minimal BOM are critical design requirements.



Our latest hi-speed, small package switches were designed to deliver speed and power advantages for mobile devices that continue to evolve in complexity, placing greater demands on data transmission, said Jesse Lyles, Director and General Manager of SMSC's Mobile Technology Solutions product line. With an ultra-small footprint, data multiplexing on a common connector and proven ESD protection, all at speeds of up to double the industry required USB 2.0 bandwidth, SMSC offers a compelling solution for designers of these portable devices.



Key Specifications USB3750:





Integrated USB 2.0 switch with 1GHz bandwidth

VBUS Over-Voltage Protection up to 18V

USB-IF Battery Charging Detection

Configurable Over-Voltage and Under-Voltage Lock-Out settings

Enhanced configuration options available through serial I2C

Commercial (0 degree to 70 degree C) and Industrial (-40 degree to 85 degree C) temperature range support

USB Port ESD Protection (DP/DM) up to ±25kV (IEC 61000-4-2)

16 Lead QFN, RoHS-compliant package



Key Specifications USB3740:





USB 2.0 switch with 1GHz bandwidth

30nA typical active current

Supports Industrial (-40 degree to 85 degree C) temperature range

USB Port ESD Protection (DP/DM) up to ±15kV (IEC 61000-4-2)

10 Lead QFN, RoHS-compliant package



Samples of the USB3750 and USB3740 are available now.