TPS2540, TPS2540A

TPS2541, TPS2541A

SLVSAG2C

– OCTOBER 2010 – REVISED OCTOBER 2011

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

DESCRIPTION (CONT.)

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-m

Ω, 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 (TPS2541/41A). With the TPS2540/40A,

the mode

“000” is used to force an output discharge.

FUNCTION

(2)

PACKAGE

MARKING

Enable

2540

≤0.9 s

Output Discharge

2541

-40

°C to 85°C

QFN16

Enable

2540A

≤9 s

Output Discharge

2541A

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or visit the

device product folder on www.ti.com.

(2)

Low DP_IN period in DCP mode, see Figure 31.

2

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© 2010–2011, Texas Instruments Incorporated

Product Folder Link(s): TPS2540, TPS2540A TPS2541, TPS2541A