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Texas Instruments TPS259541DSGT
- Part No.:
- TPS259541DSGT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259541DSGT.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,530
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Product details
Overview
TPS259541DSGT from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse IC with 34 mΩ on-resistance, 13.7-V fast overvoltage clamp (5 µs response), auto-retry thermal shutdown, and active-high enable with adjustable UVLO. It protects power rails in adapter-powered industrial systems and SSDs against overcurrent, overvoltage, and inrush surges.
For engineers reviewing the TPS259541DSGT datasheet, TPS259541DSGT pinout, TPS259541DSGT application, or TPS259541DSGT equivalent, key selection criteria include output voltage clamp threshold (13.7 V typ), current limit accuracy (±7.5%), dV/dt slew rate control, ILM-based load current monitoring, and UL 2367/IEC 62368-1 safety certification.
Technical Context
The TPS259541DSGT integrates a low-RON N-channel MOSFET switch, precision current-sense amplifier, fast analog overvoltage clamp circuit, and thermal shutdown logic with 5°C hysteresis. Its auto-retry fault recovery mode resets after 93 ms following thermal shutdown.
It uses an external resistor on the ILM pin to set current limit (0.5–4 A range) and an external capacitor on dVdt to control output slew rate. The EN/UVLO pin supports resistor-divider–based undervoltage lockout with 1.2 V nominal threshold and 100 mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 18 V - supports wide-range DC supplies including 3.3 V, 5 V, 12 V, and 15 V rails |
| Overvoltage Clamp Threshold | 13.7 V (typ) - clamps transients above this level within 5 µs to protect downstream 12-V logic and storage |
| On-Resistance (RON) | 34 mΩ (typ at 25°C) - limits conduction loss to ≤550 mW at 4 A, enabling compact thermal design |
| Current Limit Accuracy | ±7.5% - ensures predictable trip point across temperature for reliable short-circuit protection |
| Thermal Shutdown | 157°C (rising), 152°C (falling) - auto-retry operation resumes after 93 ms, avoiding system latch-up |
| Enable Logic | Active-high EN/UVLO with 1.2 V threshold - allows programmable undervoltage lockout using resistor divider |
| Safety Certifications | UL 2367 (E169910), IEC 62368-1 - validated for use in safety-critical end equipment without additional isolation |
Pinout & Package
TPS259541DSGT is housed in an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad (GND-connected) for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Connects to external capacitor to set output turn-on slew rate; floating = fastest ramp |
| EN/UVLO | Analog input | Active-high enable; resistor divider sets UVLO threshold (1.2 V typ); must not be left floating |
| IN (pins 3,4) | Power input | Dual-source input pins reduce trace inductance and improve high-current path robustness |
| OUT | Power output | Switched output delivering protected power to downstream loads; clamped at 13.7 V during OV events |
| FLT | Digital output | Open-drain fault indicator pulled low during overcurrent, overvoltage, or thermal shutdown |
| ILM | Analog I/O | Configures current limit via external RILM; outputs 276 µA/A monitor signal for real-time load current sensing |
| GND (pin 8 + pad) | Ground | Primary ground return and thermal interface; exposed pad must be soldered to PCB GND plane |
Key Features
| Feature | Design Value |
|---|---|
| Fast overvoltage clamp | 13.7-V threshold with 5-µs response time eliminates need for external TVS diodes in 12-V systems |
| Adjustable current limiting | 0.5–4 A range set by single resistor (RILM = 487 Ω → 4.17 A), ±7.5% accuracy over –40°C to 125°C |
| Load current monitoring | ILM pin provides 276 µA/A proportional output for accurate real-time current telemetry without shunt resistor |
| Auto-retry thermal protection | 157°C shutdown with 5°C hysteresis and 93-ms retry interval prevents permanent latch-off during transient overload |
| Programmable UVLO | EN/UVLO pin accepts resistor divider to set custom input undervoltage threshold (e.g., 2.7 V IN → 1.2 V at pin) |
Applications
| Industrial Power Distribution | SSD & HDD Power Management |
|---|---|
|
Use Scenario: Protecting 12-V backplane rails in PLC I/O modules against hot-swap inrush and field-wiring shorts. IC Role / Device Role / Timing Role: Primary overcurrent and overvoltage protector with 5-µs clamp response and auto-retry recovery. Use Value: Eliminates need for discrete fuses and TVS diodes while maintaining UL 2367 compliance and <100-ms fault clearance. |
Use Scenario: Safeguarding SATA/M.2 SSDs during insertion into powered host systems with variable adapter inputs. IC Role / Device Role / Timing Role: eFuse managing inrush current and clamping 15-V adapter surges before they reach NAND flash controllers. Use Value: Prevents data corruption and NAND damage via sub-10-µs overvoltage response and precise 4-A current limiting. |
| Adapter-Powered Consumer Electronics | White Goods Control Boards |
|
Use Scenario: Regulating power delivery from universal AC adapters (5–18 V) to set-top box mainboards with mixed-voltage ICs. IC Role / Device Role / Timing Role: Input-stage protector enforcing 13.7-V clamp and adjustable UVLO to reject brownout conditions. Use Value: Enables single-board compatibility across global adapter standards while meeting IEC 62368-1 single-point-failure requirements. |
Use Scenario: Securing 12-V motor driver and sensor rails in washing machine control units exposed to line transients and ESD. IC Role / Device Role / Timing Role: Fault-tolerant power switch with integrated current monitor for predictive maintenance of pump/motor loads. Use Value: Provides real-time ILM-based current telemetry for firmware diagnostics and eliminates fuse replacement in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259540DSGT | Same 13.7-V clamp and RON, but latch-off (not auto-retry) thermal response | Requires manual reset after thermal fault; unsuitable for unattended systems | Select TPS259540DSGT only when system-level fault handling mandates latched shutdown |
| TPS259421ARVCR | Lower 2.5-A rating, 42-mΩ RON, 6.5-V clamp, no UL/IEC certification | Lacks safety certification and 12-V system overvoltage coverage | Choose TPS259421ARVCR only for cost-sensitive, non-certified 5-V embedded designs |
Compared with TPS259541DSGT, TPS259540DSGT trades auto-retry recovery for deterministic latch-off behavior, while TPS259421ARVCR sacrifices safety certification and 12-V surge protection for smaller size and lower cost-neither offers direct drop-in replacement capability.
Availability
TPS259541DSGT is available at Aetrix Electronics and suitable for industrial power distribution, SSD/HDD protection, and adapter-powered consumer electronics requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TPS259541DSGT 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 protection and power delivery solutions.
The TPS2595xx family was designed specifically for robust, certified eFuse protection in industrial, storage, and consumer power rails-delivering integrated overvoltage clamp, current limiting, and thermal management in a space-constrained WSON package.
FAQ
What is the overvoltage clamp threshold and response time of the TPS259541DSGT?
The TPS259541DSGT features a factory-set overvoltage clamp threshold of 13.7 V (typical), with a guaranteed response time of 5 µs when output current exceeds 4 A. This clamping action limits the OUT pin voltage to ≤14.1 V (max) during transients, protecting downstream 12-V logic and storage components without external TVS devices. The TPS259541DSGT maintains this performance across its full operating temperature range (–40°C to +125°C).
How is current limiting configured on the TPS259541DSGT?
Current limiting on the TPS259541DSGT is set using a single external resistor (RILM) connected between the ILM pin and GND. With RILM = 487 Ω, the device delivers a typical current limit of 4.17 A (±7.5%). The ILM pin also provides a proportional analog monitor signal (276 µA/A) for real-time load current measurement, eliminating the need for a separate sense resistor in telemetry applications.
Does the TPS259541DSGT support programmable undervoltage lockout?
Yes-the TPS259541DSGT supports programmable undervoltage lockout via its EN/UVLO pin. A resistor divider from IN to GND sets the enable threshold; for example, a 1:1 divider yields ~1.2 V at the pin when VIN = 2.4 V, matching the internal 1.2 V UVLO threshold. The pin exhibits 100 mV hysteresis (1.1 V falling), ensuring stable turn-on/turn-off behavior near the threshold without oscillation.
What thermal protection behavior does the TPS259541DSGT implement?
The TPS259541DSGT implements auto-retry thermal shutdown: it disables the internal FET when junction temperature reaches 157°C (rising) and re-enables after cooling to 152°C (falling), with a fixed 93-ms retry interval. This prevents permanent latch-off during temporary overloads-such as motor startup or ambient temperature spikes-while maintaining system uptime. The exposed thermal pad must be soldered to a GND plane to achieve the specified RθJB = 28.3°C/W.
Is the TPS259541DSGT certified for safety-critical applications?
Yes-the TPS259541DSGT carries UL 2367 Recognition (File No. E169910) and IEC 62368-1 certification. It has been validated for safe operation during single-point failures (e.g., ILM pin open/short), meeting stringent requirements for industrial, medical, and consumer equipment. These certifications eliminate the need for additional external safety components in end-equipment compliance testing.
TPS259541DSGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- -
- Accuracy:
- ±7.5%
- Voltage - Input:
- 2.7V ~ 18V
- Current - Output:
- 4A
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
TPS259541DSGT FAQ
1.How can I place an order for TPS259541DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259541DSGT 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 TPS259541DSGT reliable?
The price and inventory of TPS259541DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259541DSGT is usually 5 days.
3.What payment methods are accepted for TPS259541DSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259541DSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259541DSGT?
TPS259541DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259541DSGT 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 TPS259541DSGT?
For technical support, including TPS259541DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259541DSGT requirements.
6.How does Aetrix verify that TPS259541DSGT is sourced from the original manufacturer or authorized distributors?
All TPS259541DSGT 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 TPS259541DSGT meets industry standards.
7.What is the process for return or replacement of TPS259541DSGT?
All TPS259541DSGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS259541DSGT, 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 TPS259541DSGT part is unused and in its original packaging.
Return procedure for TPS259541DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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