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Texas Instruments TPS2540ARTET
- Part No.:
- TPS2540ARTET
- Manufacturer:
- Texas Instruments
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
TPS2540ARTET.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 16WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:462
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Product details
Overview
TPS2540ARTET from Texas Instruments is a USB charging port power switch and controller integrating a 73-mΩ high-side MOSFET, 2.6-GHz USB 2.0 data-line switch, and BC1.2/YD/T 1591-2009 charging port identification logic. It supports DCP, CDP, and SDP modes via CTL1–CTL3 inputs and delivers up to 2.5 A continuous output current with adjustable current limiting (via ILIM0/ILIM1 resistors) for notebook PCs and universal wall adapters.
For engineers reviewing the TPS2540ARTET datasheet, TPS2540ARTET pinout, TPS2540ARTET application, or TPS2540ARTET equivalent, key selection criteria include its dual-role USB power/data switching capability, programmable current limit thresholds, fault reporting via open-drain FAULT, thermal shutdown at 155°C, and QFN-16 RTE package with exposed thermal pad for high-power USB port designs.
Technical Context
The TPS2540ARTET combines three functional blocks: a current-limited power switch with EN-controlled enable/disable, a bidirectional high-bandwidth analog switch for DP/DM lines (2.6 GHz bandwidth, <6.2 pF on-state capacitance), and a charging port detection engine supporting BC1.2 DCP, Chinese YD/T 1591-2009, Apple Divider Mode, and CDP handshaking protocols. Its auto-detect mode operates without external intervention.
Control is implemented via three logic inputs (CTL1–CTL3) that select among six charge modes, while ILIM_SEL dynamically selects between two current-limit thresholds set by external resistors (RILIM0 and RILIM1). The device features deglitched FAULT reporting (5–12 ms assertion time) and integrated thermal shutdown with 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 4.5 V to 5.5 V - compatible with standard USB VBUS supply; includes 4.1 V UVLO threshold with 100 mV hysteresis. |
| Continuous output current | 0 to 2.5 A - supports high-current USB charging applications; current limit adjustable up to 2.8 A typical via external resistors. |
| Power switch RDS(on) | 73 mΩ (typ.) - low conduction loss enables efficient 2.5-A operation with minimal thermal rise in QFN-16 RTE package. |
| Data switch bandwidth | 2.6 GHz - preserves USB 2.0 HS signal integrity with <0.25 ns propagation delay and 52 dB on-state isolation. |
| Fault response time | 1.5 µs - fast short-circuit detection ensures robust protection of downstream peripherals and host system. |
| Thermal shutdown | 155°C activation / 135°C recovery - provides reliable overtemperature protection with 10°C hysteresis for sustained operation. |
| Package | 16-pin QFN (RTE) with exposed thermal pad - optimized for PCB heat dissipation; θJA = 53.4°C/W on JEDEC high-K board. |
Pinout & Package
RTE package is a 4 mm × 4 mm, 16-pin QFN with exposed thermal die pad. Pin 1 is top-left corner (IN); pin numbering follows counter-clockwise sequence. Exposed pad must be soldered to GND plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Power input | Accepts 4.5–5.5 V USB VBUS; requires local 0.1-µF ceramic decoupling capacitor. |
| OUT (Pin 12) | Switched power output | Delivers current-limited VBUS to USB connector; supports up to 2.5 A continuous load. |
| GND (Pin 14) | Ground reference | Primary ground connection; must be tied to exposed thermal pad and system GND plane. |
| EN (Pin 5) | Enable control | Active-high logic input; device disabled when low; 0.9–1.65 V threshold with 200 mV hysteresis. |
| FAULT (Pin 13) | Open-drain fault indicator | Asserts low during overcurrent or overtemperature; deglitched with 5–12 ms timing for noise immunity. |
| ILIM0 (Pin 16) / ILIM1 (Pin 15) | Current limit setting | Connect external resistors (16.9–750 kΩ) to GND to set low/high current thresholds per ILIM_SEL state. |
| CTL1–CTL3 (Pins 6–8) | Charging mode selection | 3-bit logic interface selecting DCP, CDP, SDP, Divider Mode, or Auto-Detect; "000" forces OUT discharge. |
| DP_IN/DM_IN (Pins 10/11) | USB data input (to peripheral) | Bi-directional D+/D− lines from USB connector; support BC1.2 handshake and Apple Divider Mode voltages. |
| DP_OUT/DM_OUT (Pins 3/2) | USB data output (to host) | Bi-directional D+/D− lines to USB host controller; low-capacitance path preserves 480 Mbps signaling. |
Key Features
| Feature | Design Value |
|---|---|
| BC1.2 & YD/T 1591-2009 compliance | Enables certified USB charging across global markets without external protocol ICs or firmware. |
| 2.6-GHz USB 2.0 data switch | Preserves eye diagram integrity and minimizes jitter (<0.2 ns skew) for full-speed and high-speed USB links. |
| Adjustable dual-threshold current limit | Supports dynamic load management: e.g., 500 mA for SDP, 1.5 A for CDP, or 2.5 A for DCP via resistor selection. |
| Integrated thermal shutdown | Prevents latch-up or damage under sustained overload; recovers automatically after cooling below 135°C. |
| De-glitched FAULT reporting | Eliminates false triggers from transient overloads; ensures reliable system-level fault handling and logging. |
Applications
| USB Charging Hub | Notebook PC USB Port |
|---|---|
Use Scenario: Multi-port desktop hub delivering fast charging to smartphones and tablets while maintaining data connectivity. IC Role / Device Role / Timing Role: Acts as intelligent power/data switch per port, enabling independent BC1.2 mode selection and current limiting. Use Value: Eliminates need for discrete USB switches and charging controllers; reduces BOM count and layout area by >40%. | Use Scenario: Integrated USB Type-A port on ultrabook motherboard supporting both data transfer and 2.5-A charging. IC Role / Device Role / Timing Role: Provides VBUS switching, D+/D− signal routing, and automatic charger detection without CPU intervention. Use Value: Enables sleep-mode charging for iOS/Android devices and meets USB-IF power delivery requirements out-of-box. |
| Universal Wall Adapter | Industrial USB Host Terminal |
Use Scenario: Compact AC/DC adapter with dual USB-A ports offering adaptive charging for diverse mobile devices. IC Role / Device Role / Timing Role: Serves as primary USB port controller, managing power allocation and protocol negotiation per port. Use Value: Supports legacy (Apple), standard (SDP), and fast-charging (DCP/CDP) devices simultaneously with single IC. | Use Scenario: Ruggedized industrial tablet used in field service, requiring reliable USB peripheral attachment and battery top-up. IC Role / Device Role / Timing Role: Ensures robust VBUS control and data line integrity in electrically noisy environments with frequent hot-plug events. Use Value: Fault-tolerant design (short-circuit response <2 µs, thermal shutdown) prevents system lockup during cable faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charging port controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2540AARTET | Longer detach detection time (≤9 s vs. ≤0.9 s); identical pinout and electrical specs otherwise. | Better compatibility with non-compliant legacy chargers requiring extended DCP handshake timing. | Select TPS2540AARTET if supporting older or proprietary charging devices; otherwise TPS2540ARTET suffices for BC1.2/YD/T 1591-2009 compliance. |
| TPS2541ARTET | Replaces EN with DSC (discharge control) input; same functionality but different control logic for OUT discharge. | Required when system needs active discharge of OUT capacitor upon disable (e.g., safety-critical or low-leakage systems). | Choose TPS2541ARTET only if OUT discharge timing and control method are critical; TPS2540ARTET uses EN-based enable/disable without forced discharge. |
Compared with TPS2540AARTET and TPS2541ARTET, the TPS2540ARTET offers the shortest DCP detect time (≤0.9 s) and standard EN-based enable control-ideal for cost-sensitive, high-volume notebook and hub designs where rapid port enumeration and simple enable logic are prioritized.
Availability
TPS2540ARTET is available at Aetrix Electronics and suitable for USB charging hubs, notebook PC USB ports, and universal wall adapters requiring stable component supply, automotive-grade reliability, and long-term production continuity.
Supply support for TPS2540ARTET includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity solutions with over 90 years of innovation in power management and interface ICs.
The TPS2540ARTET belongs to TI's USB Power Delivery and Charging portfolio, designed specifically for intelligent USB port control in portable computing and consumer electronics with integrated BC1.2/YD/T 1591-2009 compliance.
FAQ
What is the maximum continuous output current supported by the TPS2540ARTET?
The TPS2540ARTET supports a maximum continuous output current of 2.5 A under recommended operating conditions (TJ ≤ 125°C). Its current limit is adjustable up to 2.8 A typical using external resistors RILIM0 and RILIM1, with ILIM_SEL selecting between two thresholds. Thermal performance depends on PCB layout and heatsinking via the exposed thermal pad.
Does the TPS2540ARTET support Apple device charging protocols?
Yes, the TPS2540ARTET supports Apple device charging through its Divider Mode, which outputs precise DP_IN = 2.0 V and DM_IN = 2.7 V (typ.) to emulate Apple-compatible chargers. This mode is selected via CTL1–CTL3 logic inputs and requires no external components beyond the standard RILIM resistors.
How does the FAULT pin on the TPS2540ARTET behave during overcurrent events?
The FAULT pin on the TPS2540ARTET is an open-drain output that asserts low during overcurrent or overtemperature conditions. It features built-in deglitching with 5–12 ms assertion/de-assertion timing to reject transient faults. When pulled up externally (e.g., with 10 kΩ to 5 V), it sinks up to 25 mA and drops to ≤100 mV at 1 mA sink current.
Can the TPS2540ARTET be used in USB 3.0 applications?
The TPS2540ARTET is designed for USB 2.0 data lines (D+/D−) only and is not compatible with USB 3.0 SuperSpeed differential pairs (SSTX/SRX). However, it fully satisfies USB 2.0 and USB 3.0 power switch requirements per USB-IF specifications, making it suitable for mixed-mode ports where USB 2.0 signaling coexists with USB 3.0 data paths.
What is the purpose of the ILIM_SEL pin on the TPS2540ARTET?
The ILIM_SEL pin on the TPS2540ARTET is a logic-level input that selects between two independently adjustable current-limit thresholds: ILIM0 (when ILIM_SEL = LO) and ILIM1 (when ILIM_SEL = HI). This enables dynamic current scaling-for example, 500 mA for SDP mode and 2.5 A for DCP mode-without changing external resistor values.
TPS2540ARTET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 4.5V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 2.5A
- Rds On (Typ):
- 73mOhm
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WQFN (3x3)
TPS2540ARTET FAQ
1.How can I place an order for TPS2540ARTET through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2540ARTET on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS2540ARTET reliable?
The price and inventory of TPS2540ARTET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2540ARTET is usually 5 days.
3.What payment methods are accepted for TPS2540ARTET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2540ARTET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2540ARTET?
TPS2540ARTET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2540ARTET order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS2540ARTET?
For technical support, including TPS2540ARTET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2540ARTET requirements.
6.How does Aetrix verify that TPS2540ARTET is sourced from the original manufacturer or authorized distributors?
All TPS2540ARTET products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS2540ARTET meets industry standards.
7.What is the process for return or replacement of TPS2540ARTET?
All TPS2540ARTET units undergo pre-shipment inspection (PSI). If there is an issue with TPS2540ARTET, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS2540ARTET part is unused and in its original packaging.
Return procedure for TPS2540ARTET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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