TUSB4041I

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SLLSEK3B – JULY 2015 – REVISED DECEMBER 2015

5 Description (continued)

The TUSB4041I device supports per-port or ganged power switching and overcurrent protection. The device also

supports battery charging applications.

An individually port-power-controlled hub switches power on or off to each downstream port as requested by the

USB host. Also when an individually port-power-controlled hub senses an overcurrent event, only power to the

affected downstream port is switched off.

A ganged hub switches on power to all of the downstream ports when power is required to be on for any port.

The power to the downstream ports is not switched off unless all ports are in a state that allows power to be

removed. Also, when a ganged hub senses an overcurrent event, power to all downstream ports are switched

off.

The TUSB4041I device downstream ports provide support for battery charging applications by providing USB

battery charging downstream-port (CDP) handshaking support. The device also supports a dedicated charging-

port (DCP) mode when the upstream port is not connected. The DCP mode is compliant with the USB battery

charging specification and Chinese Telecommunications Industry Standard YD/T 1591-2009. Also, an automatic

mode provides transparent support for BC devices and devices supporting divider-mode charging solutions when

the upstream port unconnected.

The TUSB4041I device provides pin-strap configuration for some features including battery charging support,

The device is available in a 64-pin PAP package and is offered in a industrial version for operation over the

temperature range of –40°C to 85°C.

Copyright © 2015, Texas Instruments Incorporated

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