TPS2541A

ACTIVE

USB charging port controller and 2.5A power switch with output discharge

Product details

Product type Charge port controller Vin (min) (V) 4.5 Vin (max) (V) 5.5 Continuous current (max) (A) 2.5 Current limit (A) 0.25 to 2.7 Operating temperature range (°C) -40 to 85 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.1 Rating Catalog
Product type Charge port controller Vin (min) (V) 4.5 Vin (max) (V) 5.5 Continuous current (max) (A) 2.5 Current limit (A) 0.25 to 2.7 Operating temperature range (°C) -40 to 85 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.1 Rating Catalog
WQFN (RTE) 16 9 mm² 3 x 3
  • 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 CTLx=000 (TPS2540/40A) or DSC (TPS2541/41A) Input
  • Longer Detach Detection Time (TPS2540A/41A) Supporting Additional Legacy Devices
  • Available in 16-Pin QFN Package
  • 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 CTLx=000 (TPS2540/40A) or DSC (TPS2541/41A) Input
  • Longer Detach Detection Time (TPS2540A/41A) Supporting Additional Legacy Devices
  • Available in 16-Pin QFN Package

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+/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 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), and a logic-level enable EN (TPS2540/40A) or OUT discharge control DSC (TPS2541). With the TPS2540/40A, the mode “000” is used to force an output discharge.

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+/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 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), and a logic-level enable EN (TPS2540/40A) or OUT discharge control DSC (TPS2541). With the TPS2540/40A, the mode “000” is used to force an output discharge.

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Technical documentation

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Type Title Date
* Data sheet USB Charging Port Power Switch and Controller for Charging Host Ports datasheet (Rev. C) 14 Sep 2011
Certificate US-39957-UL Certificate of Compliance IEC 62368-1 27 Jun 2022
Application note Effective System ESD Protection for TPS254x USB Charging Port Controllers 03 Jun 2016
User guide TPS2540EVM-623: Evaluation Module for TPS2540/40A and TPS2541/41A (Rev. B) 10 Aug 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS2540EVM-623 — Evaluation Module for TPS254x USB Charging Port Power Switch & Controller

The TPS2540EVM-623 is a fully assembled and tested circuit for evaluating the TPS254x USB Charging Port Power Switch and Controller.
User guide: PDF
Not available on TI.com
Simulation model

TPS2541A Unencrypted PSPICE Transient Model Package (Rev. A)

SLVM335A.ZIP (35 KB) - PSpice Model
Package Pins Download
WQFN (RTE) 16 View options

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