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Texas Instruments TPS2041D
- Part No.:
- TPS2041D
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2041D.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,166
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Product details
Overview
TPS2041D from Texas Instruments is a 500 mA continuous, 135 mΩ (at 5 V) N-channel high-side power distribution switch with active-low enable, short-circuit and thermal protection, and overcurrent logic output. It operates from 2.7 V to 5.5 V input and delivers controlled 2.5-ms rise time for USB port power management in host/hub applications.
For engineers reviewing the TPS2041D datasheet, TPS2041D pinout, TPS2041D application, or TPS2041D equivalent, this device serves as a robust, UL-listed (E169910), ESD-protected (2-kV HBM) power switch for hot-plug-capable USB 1.1/2.0 downstream ports requiring precise current limiting, automatic fault recovery, and low standby current (≤10 µA).
Technical Context
The TPS2041D integrates an internal charge pump enabling gate drive above source voltage - critical for full enhancement of its N-channel MOSFET at input voltages as low as 2.7 V. Its driver circuitry actively controls rise/fall times (2.5 ms / 4.4 ms typical) to suppress inrush surges and EMI during switching.
Current limiting is implemented via a sense FET (not external resistor), delivering accurate 0.9-A typical short-circuit threshold with constant-current mode behavior. Thermal shutdown activates at ~140°C junction temperature, with ~20°C hysteresis enabling automatic recovery once cooled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 500 mA - maximum steady-state load without derating at TA = 25°C in SOIC (D) package |
| On-Resistance (rDS(on)) | 135 mΩ max at VI(IN) = 5 V, TJ = 125°C - determines I²R loss and voltage drop under full load |
| Rise Time (tr) | 2.5 ms typical (VI(IN) = 5.5 V, CL = 1 µF, RL = 10 Ω) - limits inrush di/dt and reduces EMI during hot-plug events |
| Enable Polarity | Active-low - compatible with standard USB controller GPIOs asserting low to enable power delivery |
| Overcurrent Output | Open-drain OC pin, active-low - directly interfaces with USB controller interrupt lines for real-time fault reporting |
| Standby Supply Current | 10 µA max (EN = VI(IN)) - enables ultra-low-power disable state for system-level power budgeting |
| Operating Voltage Range | 2.7 V to 5.5 V - supports both 3.3-V and 5-V USB bus architectures and legacy 5-V-only systems |
Pinout & Package
TPS2041D is housed in an 8-pin SOIC (D) package, surface-mount, tape-and-reel compatible (TPS2041DR). Pin spacing is 1.27 mm, body width 3.9 mm, and total footprint 4.9 × 6.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power ground reference | Common return path for switch current, charge pump, and logic; must be low-impedance connection to system ground plane |
| IN (Pins 2,3) | Input voltage supply | Parallel-connected inputs accept 2.7–5.5 V; dual pins reduce trace resistance and improve current handling |
| EN (Pin 4) | Enable control input | Active-low logic interface; <0.4 V (TJ ≤ 4.5 V) disables switch and reduces supply current to ≤10 µA |
| OC (Pin 5) | Overcurrent indicator output | Open-drain, active-low signal asserted during current limit or thermal shutdown; requires external pull-up |
| OUT (Pins 6,7,8) | Switched power output | Three parallel output pins deliver up to 500 mA; low-inductance layout minimizes voltage overshoot during turn-off |
Key Features
| Feature | Design Value |
|---|---|
| Integrated charge pump | Enables full gate drive for N-channel MOSFET down to 2.7 V input - eliminates need for external boost circuitry |
| Controlled rise/fall timing | 2.5-ms rise / 4.4-ms fall (typ.) - prevents excessive inrush into large capacitive loads (e.g., 22–120 µF USB ports) |
| Sense FET current monitoring | Replaces lossy shunt resistors - maintains low rDS(on) while providing accurate 0.9-A short-circuit trip threshold |
| Thermal shutdown with hysteresis | Shuts off at ~140°C junction; auto-restarts after ~20°C cooldown - enables safe operation under sustained overload |
| UL recognition (E169910) | Validated for end-equipment safety compliance - reduces certification burden in USB host/hub designs |
Applications
| USB Host Downstream Port | Self-Powered Hub Port |
|---|---|
Use Scenario: Power delivery to USB peripherals (keyboard, mouse, flash drive) on desktop PC motherboard or docking station. IC Role / Device Role / Timing Role: High-side power switch controlling VBUS per-port, with enable synchronized to USB enumeration and OC reporting to host controller. Use Value: Prevents bus-wide faults from single-port shorts; 2.5-ms rise time meets USB inrush limits (<44 Ω + 10 µF); 500 mA rating supports high-power functions post-enumeration. |
Use Scenario: Individual port power control in standalone USB 2.0 hubs powered by local AC adapter. IC Role / Device Role / Timing Role: Independent per-port power switch enabling dynamic enable/disable, overcurrent isolation, and hot-plug detection. Use Value: Enables USB specification-compliant current limiting (0.9-A short-circuit clamp) and OC fault signaling required for SPH certification; SOIC package fits compact hub PCB layouts. |
| Bus-Powered Hub Input Stage | Industrial Hot-Swap Module |
Use Scenario: Primary power switch for bus-powered hubs drawing ≤500 mA from upstream host port. IC Role / Device Role / Timing Role: Input-side distribution switch ensuring <100 mA startup current and controlled ramp-up before enumeration. Use Value: Active-low EN allows microcontroller-gated power sequencing; undervoltage lockout (2 V threshold) prevents erratic behavior during brownout conditions. |
Use Scenario: 5-V rail protection in programmable logic controllers or test equipment with field-replaceable modules. IC Role / Device Role / Timing Role: Fault-tolerant high-side switch providing short-circuit isolation, thermal margin, and status feedback for diagnostics. Use Value: 135-mΩ rDS(on) minimizes voltage drop across 500 mA loads; 2-kV HBM ESD rating ensures reliability in industrial handling environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2041P | Same electrical specs; PDIP-8 package (106°C/W θJA vs. 172°C/W for D) | Through-hole mounting; higher thermal mass but larger board area; no tape-and-reel option | Select for prototyping or legacy through-hole assembly where SOIC reflow is unavailable. |
| TPS2051D | Identical switch specs but active-high enable (EN pin logic inverted) | Requires inverted control signal from MCU/GPIO; same USB port use cases but different firmware interface | Select when system controller natively drives high-enable signals or when consolidating BOM across multiple enable-polarity variants. |
Compared with TPS2041P and TPS2051D, the TPS2041D offers optimal surface-mount manufacturability in SOIC-D, active-low enable compatibility with common USB controller GPIOs, and tape-and-reel readiness - making it the preferred choice for volume USB host/hub production.
Availability
TPS2041D is available at Aetrix Electronics and suitable for USB host port management, self-powered hub design, and industrial hot-swap module development requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for TPS2041D 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 power management ICs, with decades of USB interface and power-switch innovation.
The TPS2041D belongs to TI's power-distribution switch family, designed specifically for USB-compliant hot-plug power control - emphasizing low rDS(on), precise current limiting, integrated fault reporting, and robust thermal protection in compact packages.
FAQ
What is the enable polarity of the TPS2041D?
The TPS2041D features an active-low enable input (EN pin). A logic low (≤0.4 V at VI(IN) ≤ 4.5 V) turns the high-side switch ON, while a logic high (≥2 V) disables the switch and reduces supply current to ≤10 µA. This matches common USB controller GPIO configurations used for port power gating.
Does the TPS2041D require external components for basic operation?
No external components are required for core switching functionality. The TPS2041D integrates its own charge pump and current-sense FET. However, TI recommends a 0.1-µF ceramic bypass capacitor between IN and GND, and a 0.1-µF ceramic + 22–120-µF electrolytic capacitor on OUT for USB applications to manage inrush and transient stability.
How does the TPS2041D respond to a short-circuit event?
Upon detecting an overload exceeding ~0.9 A, the TPS2041D enters constant-current mode, clamping output current while reducing output voltage. If the fault persists, junction temperature rises to ~140°C, triggering thermal shutdown. The device automatically recovers after cooling ~20°C - all without external intervention.
Is the TPS2041D compliant with USB power-delivery requirements?
Yes. The TPS2041D meets key USB 1.1/2.0 power-distribution requirements: 500 mA per-port rating, controlled 2.5-ms rise time (limiting inrush), active-low enable for port sequencing, open-drain OC reporting for host controller alerts, and UL recognition (E169910) for end-equipment safety certification.
What is the maximum junction temperature and thermal resistance of the TPS2041D?
The TPS2041D has an operating virtual junction temperature range of –40°C to 125°C. In its SOIC (D) package, the thermal resistance θJA is 172°C/W. At 500 mA and 135 mΩ rDS(on), power dissipation reaches ~34 mW - well within safe margins at ambient ≤85°C, assuming standard PCB copper area.
TPS2041D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- 80mOhm
- Input Type:
- Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TPS2041D FAQ
1.How can I place an order for TPS2041D through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2041D 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 TPS2041D reliable?
The price and inventory of TPS2041D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2041D is usually 5 days.
3.What payment methods are accepted for TPS2041D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2041D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2041D?
TPS2041D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2041D 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 TPS2041D?
For technical support, including TPS2041D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2041D requirements.
6.How does Aetrix verify that TPS2041D is sourced from the original manufacturer or authorized distributors?
All TPS2041D 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 TPS2041D meets industry standards.
7.What is the process for return or replacement of TPS2041D?
All TPS2041D units undergo pre-shipment inspection (PSI). If there is an issue with TPS2041D, 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 TPS2041D part is unused and in its original packaging.
Return procedure for TPS2041D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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