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Texas Instruments TPS2551DRVTG4
- Part No.:
- TPS2551DRVTG4
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS2551DRVTG4.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,193
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Product details
Overview
TPS2551DRVTG4 from Texas Instruments is a high-side N-channel MOSFET power-distribution switch with adjustable current limiting (100 mA–1100 mA), 94-mΩ on-resistance in SOT-23-6 package, fast 2 μs overcurrent response, and reverse-input-output voltage protection. It operates from 2.5 V to 6.5 V and delivers precise current control for USB ports, laptops, and heavy capacitive loads.
For engineers reviewing the TPS2551DRVTG4 datasheet, TPS2551DRVTG4 pinout, TPS2551DRVTG4 application, or TPS2551DRVTG4 equivalent, key selection criteria include active-high enable logic, thermal shutdown at 135°C (current-limit mode) and 155°C (absolute), deglitched FAULT reporting, soft-start control via ILIM resistor, and ESD robustness (±2000 V HBM).
Technical Context
The TPS2551DRVTG4 integrates an internal charge pump to drive the N-channel MOSFET gate above the source, enabling full enhancement down to 2.5 V input. Its current-limit threshold is set externally via RILIM (14.3 kΩ–80.6 kΩ), yielding programmable IOC (overcurrent DC threshold) and IOS (short-circuit current) with ±10% typical tolerance across temperature.
It features dual thermal protection: one sensor triggers at 135°C during sustained current-limit operation (with 15°C hysteresis), and a second at 155°C for absolute junction safety. Reverse-voltage detection activates when VOUT exceeds VIN by ≥135 mV (typ), disabling the MOSFET within 5 ms and asserting FAULT after 4-ms deglitch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current-limit range | 100 mA to 1100 mA, set by external RILIM; enables precise load protection without upstream supply droop |
| rDS(on) | 94 mΩ (typ) at 25°C in DBV package; minimizes conduction loss and self-heating under 1-A load |
| Overcurrent response time | 2 μs (typ); limits fault energy before downstream components are stressed |
| Enable logic | Active-high EN pin; compatible with standard CMOS/TTL outputs and simplifies interface with microcontrollers |
| Input voltage range | 2.5 V to 6.5 V; supports single-cell Li-ion, USB 2.0/3.0, and 3.3 V/5 V system rails |
| FAULT output | Open-drain, active-low, deglitched (7.5 ms for overcurrent, 4 ms for reverse-voltage); eliminates false trips during hot-plug transients |
| Standby supply current | ≤1 μA; enables ultra-low-power standby in battery-powered devices such as portable USB hubs |
Pinout & Package
SOT-23-6 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed PowerPAD™ thermally connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input | Accepts 2.5 V–6.5 V supply; requires ≥0.1 μF ceramic decoupling capacitor placed adjacent to pin |
| OUT | Switched power output | Drives load through integrated N-MOSFET; output voltage follows IN when enabled, clamped during faults |
| EN | Enable control | Active-high logic input; drives internal bias circuits and charge pump; <1 μA leakage ensures low quiescent power |
| FAULT | Fault status flag | Open-drain output asserted low during overcurrent, reverse-voltage, or thermal shutdown; requires external pull-up |
| ILIM | Current-limit programming | Analog input referencing GND; sets IOC/IOS thresholds via external resistor (14.3–80.6 kΩ); sensitive to PCB trace parasitics |
| GND | Ground reference | Primary signal and power return; must be connected to PowerPAD™ for thermal and electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| Built-in soft-start | Rise/fall times controlled (1.0–1.5 ms tr, 0.2–0.5 ms tf) to suppress inrush into heavy capacitive loads like USB peripherals |
| Reverse input-output protection | Turns off MOSFET when VOUT > VIN + 135 mV (typ), preventing backfeed damage to upstream regulators or batteries |
| Deglitched fault reporting | Hardware-based 4-ms (reverse-voltage) and 7.5-ms (overcurrent) filtering eliminates false FAULT assertions during normal hot-plug events |
| Thermal foldback and shutdown | Two-tier protection: 135°C current-limit throttling (with 15°C hysteresis) and 155°C hard shutdown ensure safe operation under sustained overload |
| UL recognition | UL File No. E169910 certified; meets end-equipment safety requirements for consumer and industrial USB power delivery |
Applications
| USB Port Protection | Laptop Docking Station |
|---|---|
Use Scenario: Protecting downstream-facing USB ports against short circuits during cable insertion or peripheral malfunction. IC Role / Device Role / Timing Role: High-side current-limited power switch with active-high enable and FAULT monitoring for host-controlled port management. Use Value: Prevents bus voltage collapse and host controller reset by limiting fault current to ≤1.1 A while maintaining system-level USB compliance. | Use Scenario: Managing power to multiple USB peripherals, Ethernet, and display interfaces in compact laptop docking stations. IC Role / Device Role / Timing Role: Independent rail switch per interface, coordinated via microcontroller EN signals and FAULT feedback for dynamic load shedding. Use Value: Enables selective power gating without shared current-sense interference; 94-mΩ rDS(on) minimizes voltage drop across 5-V/1-A rails. |
| Cell Phone Charging Circuit | Industrial USB Hub |
Use Scenario: Isolating and current-limiting the USB VBUS path in smartphone charging ICs to prevent battery over-discharge during faulty accessories. IC Role / Device Role / Timing Role: Load switch between battery-backed 5-V regulator and USB connector, with reverse-voltage blocking to protect battery during OTG mode. Use Value: 135 mV reverse-voltage trip point and 5-ms disable time prevent >1 μA reverse leakage into battery, extending standby life. | Use Scenario: Providing robust, individually protected USB ports in industrial-grade hubs operating in wide-temperature environments (–40°C to 125°C). IC Role / Device Role / Timing Role: Per-port power distribution switch with thermal derating support and FAULT-driven firmware diagnostics. Use Value: Junction temperature range (–40°C to 125°C) and 15 kV ESD rating (with external capacitance) ensure reliability in harsh EMI/noisy factory settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-limited power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2553DRVR | Same SOT-23-6 package, identical current-limit range and rDS(on), but features active-low enable (EN) instead of active-high (EN) | Requires inverted control signal; unsuitable where MCU GPIO is limited or pull-up resources are constrained | Select TPS2553DRVR only if existing design uses active-low logic or shares enable routing with TPS2550-series devices |
| TPD3S014TDR | Integrated USB data-line ESD protection (±15 kV contact) + 1.5-A current limit; larger 2.5-mm × 2.5-mm WSON-8 package; no reverse-voltage protection | Optimized for USB 2.0 data+power combo protection; lacks reverse-input blocking needed for battery-backup or OTG use cases | Choose TPD3S014TDR when combined data-line surge suppression and higher current capacity are required, and reverse-voltage risk is mitigated elsewhere |
Compared with TPS2551DRVTG4, TPS2553DRVR offers identical performance but inverted enable polarity-requiring layout or firmware changes-while TPD3S014TDR trades reverse-voltage blocking for integrated data-line ESD and higher current, making it suitable only when those trade-offs align with system architecture.
Availability
TPS2551DRVTG4 is available at Aetrix Electronics and suitable for USB ports, laptop docking stations, cell phone charging circuits, and industrial USB hubs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS2551DRVTG4 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 company specializing in analog, embedded processing, and power management technologies, with leadership in high-reliability power-switch solutions.
The TPS255x product line was designed specifically for robust, programmable power distribution in USB-compliant and portable electronics, emphasizing fast fault response, thermal resilience, and ease of current-threshold configuration.
FAQ
What is the maximum continuous output current supported by the TPS2551DRVTG4?
The TPS2551DRVTG4 supports a maximum continuous output current of 1.1 A when configured with RILIM = 14.3 kΩ. This value is specified under recommended operating conditions (TJ ≤ 125°C, VIN = 2.5 V–6.5 V) and reflects the IOC (overcurrent DC threshold) parameter. Actual delivered current depends on thermal environment, PCB layout, and input voltage.
Does the TPS2551DRVTG4 provide reverse-voltage protection, and how does it behave?
Yes, the TPS2551DRVTG4 provides reverse-voltage protection by disabling the internal N-MOSFET when VOUT exceeds VIN by ≥135 mV (typical). The device responds within 5 ms and asserts the FAULT pin after a 4-ms deglitch delay. This prevents backfeed current into upstream supplies or batteries, protecting system-level components during OTG or hot-swap scenarios.
How is the current-limit threshold programmed on the TPS2551DRVTG4?
The current-limit threshold of the TPS2551DRVTG4 is programmed using an external resistor (RILIM) connected between the ILIM pin and GND. Values from 14.3 kΩ to 80.6 kΩ yield IOC thresholds from ~1.1 A down to ~100 mA. The relationship follows IOC(typ) = (23800 V)/(RILIM in kΩ)0.985 + 50 mA. Short, low-parasitic PCB traces are essential for accuracy.
What is the role of the FAULT pin on the TPS2551DRVTG4, and how should it be interfaced?
FAULT is an open-drain, active-low output that signals overcurrent, reverse-voltage, or thermal shutdown. It requires an external pull-up resistor (typically 10 kΩ to VCC). The signal remains asserted until the fault condition clears and the internal deglitch timer expires (7.5 ms for overcurrent, 4 ms for reverse-voltage). In thermal shutdown, FAULT asserts immediately with no deglitch.
Can the TPS2551DRVTG4 operate from a 3.3-V supply, and what is its minimum input voltage?
Yes, the TPS2551DRVTG4 operates from 2.5 V to 6.5 V, so 3.3 V is fully supported. Its undervoltage lockout (UVLO) turns the switch on when VIN rises above 2.45 V (typ) and turns it off below 2.35 V (typ), with 25 mV hysteresis. At 3.3 V, the device delivers full performance including 94-mΩ rDS(on) and 2-μs overcurrent response.
TPS2551DRVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 6-WDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 2.5V ~ 6.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 1.1A
- Rds On (Typ):
- 100mOhm
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS2551DRVTG4 FAQ
1.How can I place an order for TPS2551DRVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2551DRVTG4 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 TPS2551DRVTG4 reliable?
The price and inventory of TPS2551DRVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2551DRVTG4 is usually 5 days.
3.What payment methods are accepted for TPS2551DRVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2551DRVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2551DRVTG4?
TPS2551DRVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2551DRVTG4 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 TPS2551DRVTG4?
For technical support, including TPS2551DRVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2551DRVTG4 requirements.
6.How does Aetrix verify that TPS2551DRVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS2551DRVTG4 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 TPS2551DRVTG4 meets industry standards.
7.What is the process for return or replacement of TPS2551DRVTG4?
All TPS2551DRVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2551DRVTG4, 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 TPS2551DRVTG4 part is unused and in its original packaging.
Return procedure for TPS2551DRVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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