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Texas Instruments TPS2015DR
- Part No.:
- TPS2015DR
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2015DR.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,478
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Product details
Overview
TPS2015DR from Texas Instruments is a high-side power distribution switch IC designed for USB-compliant self-powered and bus-powered hub applications. It integrates an n-channel MOSFET with 95 mΩ typical on-resistance, 1 A recommended continuous current limit, 2 A short-circuit current limit, and internal overcurrent fault reporting via open-drain OC pin - enabling robust hot-plug protection and host notification in USB 1.0 systems.
For engineers reviewing the TPS2015DR datasheet, TPS2015DR pinout, TPS2015DR application, or TPS2015DR equivalent, key selection criteria include its 10 µs overcurrent trip time, undervoltage lockout (UVLO) at 4 V, logic-compatible enable input (3.3 V/5 V), controlled rise/fall times for inrush limiting, and thermal shutdown - all critical for meeting USB voltage regulation, transient droop, and safety requirements.
Technical Context
The TPS2015DR implements a charge-pump–driven high-side n-MOSFET with integrated current-sensing and thermal foldback. Its constant-current limiting mode activates within 10 µs upon exceeding the 2 A short-circuit threshold, holding output current steady until fault removal or disable. The OC pin asserts low during overcurrent or thermal shutdown, providing direct interface to USB host controllers without external circuitry.
Its UVLO ensures default-off behavior at power-up below 4 V, while controlled gate drive eliminates external RC networks needed for inrush control. Unlike discrete MOSFETs or PTCs, the TPS2015DR delivers coordinated DC regulation (≤100 mV drop at 1 A), transient suppression (≤280 mV droop with 120 µF), and fault signaling - all in a single SOIC-8 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Load Current | 1 A max - supports full-power USB downstream port operation (500 mA per port × 2 ganged ports). |
| Short-Circuit Current Limit | 2 A typical - enables fast fault clearing (10 µs) while maintaining ≤330 mV adjacent-port droop under hot-insertion. |
| On-Resistance (RDS(on)) | 95 mΩ typical - ensures ≤95 mV IR drop at 1 A, critical for meeting USB's 100 mV overcurrent device voltage-drop budget. |
| Enable Input Logic Level | 3.3 V / 5 V compatible - allows direct connection to USB hub controller GPIO without level-shifting. |
| Overcurrent Response Time | ≈10 µs - prevents damage during short circuits faster than fuses (550 µs) or PTCs (150 ms), enabling fault-tolerant hub operation. |
| Undervoltage Lockout (UVLO) | 4 V turn-on threshold - guarantees switch remains off during brown-out or cold-start, satisfying USB bus-powered hub power-up <100 mA requirement. |
| Thermal Shutdown Threshold | 150 °C junction - protects against sustained overload or poor PCB heatsinking in enclosed hub enclosures. |
Pinout & Package
TPS2015DR is housed in an 8-pin SOIC (D) package with exposed thermal pad (SOIC-8), optimized for USB hub PCB layouts requiring thermal performance and compact footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | 5-V supply input; connects to upstream hub/host 5-V rail; must be bypassed with 0.1-µF ceramic capacitor. |
| OUT | Switched Output | Delivers regulated 5-V power to downstream USB port; requires ≥120-µF tantalum output capacitance. |
| EN | Logic Enable Input | Active-high control; drives high to enable power delivery; compatible with 3.3-V or 5-V microcontroller outputs. |
| OC | Open-Drain Fault Flag | Pulls low during overcurrent or thermal shutdown; directly interfaces to USB host controller interrupt pin. |
| GND | Power Ground | System ground reference; must connect to low-impedance ground plane beneath IC for thermal and noise control. |
| NC | No Connect | Pins 5 and 7 are internally unused; must remain unconnected per TI design guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Charge Pump | Enables full n-MOSFET gate drive from 4–5.5 V supply - no external boost components required for reliable switching. |
| Controlled Rise/Fall Times | Soft-switching limits inrush current to <1 A during hot-insertion - meets USB 1.0 44 Ω + 10 µF load specification without external RC. |
| Maintenance-Free Fault Protection | Auto-recovery after fault removal - eliminates fuse replacement or PTC cooldown delays in production hubs. |
| USB-Compliant Voltage Drop | ≤95 mV drop at 1 A ensures compliance with USB's 100 mV overcurrent device limit - critical for multi-port ganged designs. |
| ESD Robustness | 6-kV HBM rating; passes IEC 61000-4-2 Level 4 (15 kV air / 8 kV contact) when paired with 1-µF IN/OUT ceramic bypass caps. |
Applications
| Self-Powered USB Hub | Bus-Powered USB Hub |
|---|---|
Use Scenario: Four-port desktop USB hub with internal AC/DC adapter supplying 5 V to all ports. IC Role / Device Role / Timing Role: High-side power switch and overcurrent protector per port (non-ganged) or across two ports (ganged), with OC signal feeding hub controller. Use Value: Enables UL-compliant 5-A short-circuit protection, 10 µs fault response, and host notification - replacing fuses/PTCs while reducing BOM count by 3×. | Use Scenario: Portable 4-port USB hub drawing power solely from laptop USB port. IC Role / Device Role / Timing Role: Single power switch enabling all four downstream ports simultaneously, with UVLO ensuring <100 mA inrush at power-up. Use Value: Meets USB bus-powered hub startup current limit and inrush control without external current-limiting resistors or timers. |
| USB Host Controller Interface | Industrial USB Peripheral Dock |
Use Scenario: Embedded x86 motherboard with integrated USB 1.0 host controller managing multiple peripherals. IC Role / Device Role / Timing Role: Port-level power gating and fault isolation IC; OC pin connected to host controller's GPIO interrupt line. Use Value: Allows OS-level port disable/re-enable and real-time fault logging - supporting Windows USB selective suspend and error recovery. | Use Scenario: Factory-floor USB docking station powering barcode scanners, HID keyboards, and serial adapters. IC Role / Device Role / Timing Role: Ruggedized power switch with thermal shutdown and ESD-hardened IO for industrial environments. Use Value: Survives repeated hot-plug cycles and electrostatic events common in manufacturing floors - validated to 15 kV air discharge with proper layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2014DR | 0.6 A continuous / 1.2 A short-circuit limit; otherwise identical pinout, features, and SOIC-8 package. | Lower current rating restricts use to single-port or low-load ganged configurations (e.g., bus-powered hubs only). | Select TPS2014DR where total port load ≤600 mA and thermal margin is constrained; TPS2015DR preferred for dual-port self-powered hubs. |
| AP2171WG-7 | 1.5 A continuous / 3 A short-circuit limit; same SO-8 package but lacks integrated charge pump - requires external gate driver for full enhancement. | Higher current capability but increased layout complexity and BOM cost due to external components. | Choose AP2171WG-7 only if >1 A continuous load is required and gate drive resources are available; TPS2015DR offers simpler integration. |
Compared with TPS2014DR, TPS2015DR provides 67% higher continuous current and 67% higher short-circuit limit - enabling dual-port ganged self-powered hub designs without derating. Against AP2171WG-7, TPS2015DR delivers plug-and-play USB compliance with no external gate drive, reducing design cycle time and layout risk.
Availability
TPS2015DR is available at Aetrix Electronics and suitable for USB hub development, embedded host controller interfaces, and industrial peripheral docking stations requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS2015DR 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 for industrial, automotive, and communications markets.
The TPS20xx family was engineered specifically for USB 1.0 power distribution - delivering integrated overcurrent protection, fault reporting, and inrush control in a single IC to replace fuses, PTCs, and discrete MOSFETs in hub and host designs.
FAQ
What is the maximum continuous current rating for the TPS2015DR?
The TPS2015DR has a recommended maximum continuous load current of 1 A at junction temperatures from 0 °C to 125 °C. This rating is validated per TI's SLVA037A application report and enables reliable operation in dual-port ganged self-powered USB hubs. Exceeding 1 A continuously risks thermal shutdown activation, especially without adequate PCB copper area for heat dissipation. Always verify actual board-level thermal performance using the TPS2015DR's 95 mΩ RDS(on) and ambient conditions.
Does the TPS2015DR require external components to function as a USB power switch?
No, the TPS2015DR operates autonomously with only two mandatory external components: a 0.1-µF ceramic capacitor between IN and GND for input bypass, and a ≥120-µF tantalum capacitor between OUT and GND for output filtering. Its internal charge pump eliminates need for external boost circuitry, and its controlled gate drive removes requirement for external RC networks. All core USB functions - overcurrent detection, fault reporting, UVLO, and thermal shutdown - are fully integrated within the TPS2015DR die.
How does the TPS2015DR meet USB voltage regulation requirements?
The TPS2015DR meets USB voltage regulation by limiting its on-resistance to 95 mΩ typical (120 mΩ max over temperature), ensuring ≤95 mV IR drop at 1 A - well within the USB specification's 100 mV budget for overcurrent protection devices. When combined with ≤10 mV PCB trace resistance and a properly regulated 5 V ±5% input, the TPS2015DR enables compliant 4.75 V minimum output at the USB connector. This is confirmed in TI's SLVA037A reference design for ganged self-powered hubs.
Can the TPS2015DR be used in bus-powered USB hubs?
Yes, the TPS2015DR is explicitly qualified for bus-powered USB hubs per TI's SLVA037A application report. Its undervoltage lockout (UVLO) ensures the switch remains off until input reaches 4 V, satisfying the USB requirement for <100 mA inrush at power-up. Its 1 A continuous rating supports up to four 100 mA downstream ports ganged together, and its 2 A short-circuit limit provides margin against transient overloads - all while maintaining ≤100 mV voltage drop per USB specifications.
What is the purpose of the OC pin on the TPS2015DR?
The OC (Overcurrent) pin on the TPS2015DR is an open-drain output that pulls low during overcurrent events or thermal shutdown, providing direct fault notification to the USB host controller or hub microcontroller. This eliminates need for external sensing circuitry and satisfies the USB specification's requirement for host-level fault reporting. The OC pin remains low until the fault condition clears and the EN pin is cycled or the fault is removed - enabling robust system-level error handling and port recovery in the TPS2015DR-based design.
TPS2015DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 4.75V ~ 5.25V
- Voltage - Supply (Vcc/Vdd):
- -
- Current - Output (Max):
- 1A
- Rds On (Typ):
- 95mOhm
- Input Type:
- -
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature
- Operating Temperature:
- 0°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS2015DR FAQ
1.How can I place an order for TPS2015DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2015DR 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 TPS2015DR reliable?
The price and inventory of TPS2015DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2015DR is usually 5 days.
3.What payment methods are accepted for TPS2015DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2015DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2015DR?
TPS2015DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2015DR 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 TPS2015DR?
For technical support, including TPS2015DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2015DR requirements.
6.How does Aetrix verify that TPS2015DR is sourced from the original manufacturer or authorized distributors?
All TPS2015DR 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 TPS2015DR meets industry standards.
7.What is the process for return or replacement of TPS2015DR?
All TPS2015DR units undergo pre-shipment inspection (PSI). If there is an issue with TPS2015DR, 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 TPS2015DR part is unused and in its original packaging.
Return procedure for TPS2015DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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