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Texas Instruments TPS2041BD
- Part No.:
- TPS2041BD
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2041BD.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:13,078
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Product details
Overview
TPS2041BD from Texas Instruments is a single-channel, current-limited power-distribution switch featuring a 70mΩ high-side N-channel MOSFET, 500mA continuous output current, thermal and short-circuit protection, and operation from 2.7V to 5.5V. It serves as a smart load switch in USB-powered peripherals and embedded systems requiring controlled inrush current and fault isolation.
For engineers reviewing the TPS2041BD datasheet, TPS2041BD pinout, TPS2041BD application, or TPS2041BD equivalent, key selection criteria include its precise 0.75A–1.25A current-limit threshold, 0.6ms typical rise time, undervoltage lockout (2.0–2.6V), deglitched OC fault reporting, and 1μA standby supply current - all critical for reliable hot-swap and capacitive-load management.
Technical Context
The TPS2041BD integrates an internal charge pump to drive the gate of its high-side MOSFET, enabling full enhancement down to 2.7V input without external components. Its constant-current limiting activates when load current exceeds the specified threshold, pulling the open-drain OC pin low to signal overcurrent.
Thermal shutdown engages at 135°C junction temperature and recovers automatically at 125°C with 10°C hysteresis. Undervoltage lockout prevents erroneous switching below 2.0V (rising) and ensures stable enable behavior across –40°C to 85°C ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 500 mA - supports USB-compliant downstream ports and moderate-power peripherals |
| Current Limit Threshold | 0.75 A min / 1.25 A max - provides accurate fault detection with ±25% tolerance for design margining |
| RDS(on) | 70 mΩ (typ, 5 V) - minimizes conduction loss and self-heating under full load |
| Rise Time | 0.6 ms (typ, 5.5 V) - controls inrush dv/dt to prevent bus voltage droop during hot-plug events |
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with Li-ion, 3.3V, and 5V system rails |
| Standby Supply Current | 1 μA - enables ultra-low-power sleep states in battery-backed systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial and consumer-grade embedded applications |
Pinout & Package
TPS2041BD is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with exposed thermal pad internally connected to GND for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Primary return path for power switch and internal circuitry; must be connected to PCB ground plane |
| IN | Power input | Supplies the high-side MOSFET source; accepts 2.7–5.5 V with UVLO protection |
| EN | Enable input | Active-high logic control (VIH ≥ 2 V); turns on MOSFET when driven high |
| OC | Overcurrent flag | Open-drain output pulled low during current limit or thermal shutdown; requires external pull-up |
| OUT | Switched output | Drives load; features controlled rise/fall times to suppress inrush transients |
Key Features
| Feature | Design Value |
|---|---|
| Integrated charge pump | Enables full MOSFET enhancement from 2.7V input - no external gate-drive components required |
| Deglitched OC output | 4–15 ms glitch immunity prevents false fault latching during startup or transient surges |
| Thermal shutdown recovery | Automatic restart after cooling to 125°C - eliminates manual reset requirement in field-deployed systems |
| UL Recognition (E169910) | Meets safety standards for end-equipment certification in commercial and industrial applications |
| No OC glitch at power-up | Ensures clean enable sequence - OC remains high until valid IN and EN conditions are met |
Applications
| USB Peripheral Port Protection | Industrial Sensor Node Power Control |
|---|---|
Use Scenario: Hot-plugging USB devices such as keyboards, mice, or flash drives into embedded host controllers. IC Role / Device Role / Timing Role: High-side load switch providing inrush current limiting and short-circuit isolation between VBUS and peripheral. Use Value: Prevents host VBUS collapse during plug-in, avoids system reset, and enables automatic fault recovery without firmware intervention. | Use Scenario: Power gating individual sensors (e.g., temperature, pressure) in a multi-node industrial monitoring system. IC Role / Device Role / Timing Role: Controlled power delivery switch with thermal protection and OC signaling for remote diagnostics. Use Value: Enables selective sensor activation, reduces standby power, and reports faults via OC pin to microcontroller GPIO. |
| Capacitive Load Sequencing | Embedded System Board-Level Power Management |
Use Scenario: Powering FPGA I/O banks or ASIC core rails with large decoupling capacitance (>100 µF). IC Role / Device Role / Timing Role: Soft-start switch regulating output slew rate to limit peak inrush current. Use Value: Eliminates need for discrete RC soft-start networks; rise time fixed at 0.6 ms (5.5 V) for predictable timing. | Use Scenario: Managing auxiliary power domains (e.g., display backlight, audio codec) in medical or test equipment. IC Role / Device Role / Timing Role: Fault-protected distribution switch with UL recognition for safety-critical subsystems. Use Value: Provides certified overcurrent/thermal protection, simplifies compliance documentation, and supports 1μA deep-sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-distribution switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2051BD | Same pinout, same SOIC-8 package, but active-high enable with identical electrical specs except OC assertion timing (slightly faster deglitch) | Drop-in replacement where enable polarity matches existing layout; functionally identical for most USB and load-switch use cases | Select TPS2051BD if system logic uses active-high enable signals and OC response speed is prioritized |
| AP2171SG-13 | Single-channel, 500mA, 2.7–5.5V, but higher RDS(on) (120mΩ typ), no UL recognition, and 2.5μA standby current | Lacks safety certification and has higher conduction loss - suitable only for cost-sensitive non-certified consumer designs | Choose AP2171SG-13 only when UL compliance is not required and board space allows for higher thermal dissipation |
Compared with TPS2041BD, TPS2051BD offers identical performance and pin compatibility with minor enable-polarity alignment benefits, while AP2171SG-13 trades certification and efficiency for lower unit cost in non-regulated applications.
Availability
TPS2041BD is available at Aetrix Electronics and suitable for USB peripheral protection, industrial sensor node power control, and capacitive load sequencing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS2041BD 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 expertise in high-reliability power solutions.
The TPS20xxB family was designed specifically for robust, current-limited power distribution in USB-compliant and hot-swap-capable systems - emphasizing fault resilience, low quiescent power, and ease of integration.
FAQ
What is the maximum continuous output current rating for the TPS2041BD?
The TPS2041BD is rated for 500 mA continuous output current under recommended operating conditions (2.7 V to 5.5 V input, –40°C to 85°C ambient). Its current-limit threshold is specified from 0.75 A minimum to 1.25 A maximum, ensuring safe operation during overload events without exceeding thermal limits. This rating applies across all supported packages including the SOIC-8 variant used in TPS2041BD.
Does the TPS2041BD require external components for gate driving?
No, the TPS2041BD does not require external components for gate driving. It integrates an internal charge pump that fully enhances the high-side N-channel MOSFET from input voltages as low as 2.7 V. This eliminates the need for external bootstrap capacitors or level-shifters, simplifying PCB layout and reducing BOM count while maintaining fast 0.6 ms typical rise time.
How does the overcurrent (OC) pin behave during fault conditions?
The OC pin on the TPS2041BD is an open-drain output that pulls low during overcurrent or thermal shutdown events. It features a deglitch circuit with 4–15 ms filtering to reject transient spikes, and it asserts cleanly without glitches at power-up. The pin remains low until the fault condition clears and the device recovers - either automatically after thermal cooldown or upon current reduction below the trip threshold.
What is the undervoltage lockout (UVLO) threshold for the TPS2041BD?
The TPS2041BD has an undervoltage lockout threshold of 2.0 V (minimum) to 2.6 V (maximum) on the IN pin, with 75 mV hysteresis. When input voltage falls below the falling threshold, the internal switch disables and OC is deasserted. UVLO ensures stable operation and prevents erratic switching during brown-out conditions across the full –40°C to 85°C temperature range.
Is the TPS2041BD UL-recognized, and what is the file number?
Yes, the TPS2041BD is UL Recognized under file number E169910. This certification confirms compliance with UL 60950-1 and UL 62368-1 for information technology and audio/video equipment, supporting end-product safety approvals in commercial and industrial applications without requiring additional component-level testing.
TPS2041BD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Last Time Buy
- 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):
- 70mOhm
- 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
TPS2041BD FAQ
1.How can I place an order for TPS2041BD through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2041BD 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 TPS2041BD reliable?
The price and inventory of TPS2041BD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2041BD is usually 5 days.
3.What payment methods are accepted for TPS2041BD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2041BD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2041BD?
TPS2041BD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2041BD 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 TPS2041BD?
For technical support, including TPS2041BD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2041BD requirements.
6.How does Aetrix verify that TPS2041BD is sourced from the original manufacturer or authorized distributors?
All TPS2041BD 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 TPS2041BD meets industry standards.
7.What is the process for return or replacement of TPS2041BD?
All TPS2041BD units undergo pre-shipment inspection (PSI). If there is an issue with TPS2041BD, 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 TPS2041BD part is unused and in its original packaging.
Return procedure for TPS2041BD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2041BD Tags
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