SMSC Announces New Transceiver Product Family Supporting USB-IF Battery Charging Specification
SMSC announced its latest advance in Hi-Speed USB 2.0 connectivity, the USB333x/334x ULPI transceiver family. This new generation of industry leading Hi-Speed USB transceivers supports the latest USB-IF Battery Charging 1.1 specification with SMSC's RapidCharge Anywhere(TM) functionality that dramatically reduces the time required for battery charging.
This new USB333x/334x product family enables smartphones and other portable devices to negotiate up to three times the charging current in comparison to a traditional USB port resulting in faster battery charging. Additionally, the USB333x/334x product family incorporates SMSC flexPWRTM technology which translates up to a 95 percent reduction in standby current consumption as compared with previous generation SMSC transceivers. This family of devices is designed in a small footprint package and reduces the number of external components through the integration of external voltage regulators and other discrete components reducing the system bill-of-material (BOM) costs by up to 60 percent over current solutions. The USB333x is available in a wafer-level chip scale package (WLCSP) and the USB334x is available in a QFN.
SMSC's USB333x/334x family of Hi-Speed USB 2.0 transceivers provides a physical layer (PHY) solution that is well-suited for portable devices, such as smart-phones, digital still/video cameras, and personal media players, in which low operating and standby currents are critical. High levels of integration enable BOM part count reduction, optimizing printed circuit board (PCB) area. Outstanding ESD performance eliminates the need for external electrostatic-discharge (ESD) protection devices in typical applications. The internal over-voltage protection (OVP) circuit protects the VBUS pin from voltages up to 30V and by incorporating a reference clock from the processor, the cost of a dedicated crystal oscillator reference is removed. The USB333x/USB334x family incorporates both 3.3V and 1.8V regulators, making it possible to operate the device from a single supply.
Samples of the USB333x/334x family are available now.
Key Specifications
- ULPI 1.0/1.1 compliant
- Single supply operations which eliminates need for external regulators
- Ultra-low standby current consumption
- Support for 12, 13, 19.2, 24, 26, 27, 38.4 and 52MHz reference clock frequencies
- Integrated USB switches and linear voltage regulator
- Enhanced ESD protection (15kV air gap, 8kV contact) and VBus protection (up to +30V)
- Industrial temperature (-40° to 85°C) support
- SMSC's flexPWR(TM) technology for low power consumption & variable I/O voltage support
- "Wrapper-less" architecture for optimized timing performance
- Low jitter PLL allows ability to accept "noisy" clock sources
- Supports device, host and On-The-Go (OTG) functionality