TI TPS2541ARTER

The TPS2540/40A and TPS2541/41A are a combination of current-limited USB port power switch with a USB 2.0 high-speed data line (D+ (overline)/D-) switch and a USB charging port identification circuit. Applications include notebook PCs and other intelligent USB host devices. The wide bandwidth (2.6 GHz) data-line switch also features low capacitance and low on resistance, allowing signals to pass with minimum edge and phase distortion. The TPS2540/40A/41/41A monitors D+ and D-, providing the correct hand-shaking protocol with compliant client devices. The TPS2540/40A/41/41A supports the following charging logic schemes: USB 2.0 BC1.2 Chinese Telecom Standard YD/T 1591-2009 Divider Mode, compliant with Apple devices such as iPod and iPhone CTL1 - CTL3 logic inputs are used to select one of the various charge modes provided by the TPS2540/40A and TPS2541/41A. These charge modes allow the host device to actively select between Dedicated Charging Port (DCP) (wall - adapter emulation), Charging Downstream Port (CDP) (active USB 2.0 data communications with 1.5 - A support), or Standard Downstream Port (SDP) USB 2.0 Mode (active USB 2.0 data communications with 500 - mA support). The TPS2540/40A/41/41A also integrates an auto - detect feature that supports both DCP schemes for Battery Charging Specification (BC1.2) and the Divider Mode without the need for outside user interaction. The TPS2540A/41A auto detect mode also has a longer detach detection time, so that it can support certain unique non - compliant devices. The TPS2540/40A/41/41A power - distribution switch is intended for applications where heavy capacitive loads and short - circuits are likely to be encountered, incorporating a 73 - mΩ, N - channel MOSFET in a single package. Constant - current mode is used when the output load exceeds the current - limit threshold. ILIM_SEL logic input selects one of two current - limit thresholds, each one being individually adjustable via an external resistor. Additional USB switch features include a de - glitched output fault reporting (FAULT (overline)), and a logic - level enable EN (TPS2540/40A) or OUT discharge control DSC (TPS2541/41A). With the TPS2540/40A, the mode 000 is used to force an output discharge.

• Meets Battery Charging Specification BC1.2 for DCP and CDP
• Meets Chinese Telecommunications Industry Standard YD/T 1591 - 2009
• Supports Sleep - Mode Charging for Most Available Apple Devices and/or BC1.2 Compliant Devices
• Compatible With USB 2.0 and 3.0 Power Switch Requirements
• 2.6 - GHz Bandwidth USB 2.0 Data Switch
• 73 - mΩ (typ.) High - Side MOSFET
• Adjustable Current Limit up to 2.8 A (typical)
• OUT Discharge Through CTL (TPS2540/40A) or DSC (TPS2541/41A) Input
• Longer Detach Detection Time (TPS2540A/41A Supporting Additional Legacy Devices)
• Available in 16 - Pin QFN Package

• USB Ports/Hubs
• Notebook PCs
• Universal Wall Charging Adapter