Microchip, Controller IC, 3-Channel, 3.3V, USB 2.0, 3.3 V, 32-Pin SQFN

From Microchip the USB3503 device is a High-Speed Inter-Chip (HSIC) USB 2.0 Hub Controller designed for use in portable applications requiring more than one USB port. Offering three downstream ports the USB3503 attaches to an upstream port via HSIC and supports low, full and hi-speed downstream devices on all enabled ports. Integrated into the device is Microchip’s RapidCharge Anywhere™ technology that provides USB-IF battery charging 1.1 specification to any portable device.

Integrated USB 2.0-compatible 3-port hub
HSIC upstream port
Advanced power saving features including 1μA standby current
USB-IF BC 1.1 detection
Supports Single-TT or Multi-TT configurations for Full and Low-Speed connections
Enhanced configuration options available through serial I2C slave port
Internal default configuration option when serial I2C host is not available
Incorporates Microchip’s MultiTRAK™, PortMap, PortSwap, PHYBoost, VariSense™ and flexPWR® technologies
External 12 to 52 MHz clock inputs
Internal 3.3V and 1.2V voltage regulators for single supply operation
USB Port ESD Protection (DP/DM) up to ±15kV (IEC 61000-4-2)