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Texas Instruments TPS259531DSGR
- Part No.:
- TPS259531DSGR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259531DSGR.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,459
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Product details
Overview
TPS259531DSGR from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse IC with 34 mΩ on-resistance, 5.7-V fast overvoltage clamp (5 µs response), auto-retry thermal shutdown, and active-high enable with adjustable UVLO. It protects downstream circuits in adapter-powered SSDs and industrial systems by limiting inrush, clamping surges, and monitoring load current via the ILM pin.
For engineers reviewing the TPS259531DSGR datasheet, TPS259531DSGR pinout, TPS259531DSGR application, or TPS259531DSGR equivalent, this page delivers verified specifications, WSON-8 package layout, real-world use cases in hot-swap and white goods, and two validated alternative parts for design flexibility and supply continuity.
Technical Context
The TPS259531DSGR integrates a low-RON N-channel MOSFET, precision current-sense amplifier, fast OVC comparator, and auto-retry thermal shutdown logic. Its 5.7-V fixed overvoltage clamp activates within 5 µs at 4 A load, independent of external components, while the EN/UVLO pin accepts resistor-divider programming for input undervoltage lockout thresholds between 2.33 V and 2.78 V.
Current limiting is set by an external resistor (RILM) from ILM to GND, supporting 0.5–4 A range with ±7.5% accuracy; simultaneous current monitoring is enabled via 276 µA/A gain on the same pin. Output slew rate is controlled by a capacitor on the dVdt pin, enabling inrush management without sacrificing turn-on speed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 18 V - supports 3.3 V, 5 V, and 12 V rails; absolute max 20 V prevents damage during transients. |
| Overvoltage Clamp | 5.7 V (typ) - clamps output to safe level within 5 µs at full 4-A load, eliminating need for external TVS diodes. |
| On-Resistance | 34 mΩ (typ at 25°C) - limits power loss to ≤544 mW at 4 A, enabling compact thermal design in WSON-8 package. |
| Current Limit Accuracy | ±7.5% - ensures predictable fault threshold across temperature (–40°C to 125°C) and input voltage variations. |
| Thermal Shutdown | 157°C with 5°C hysteresis and 93-ms auto-retry - recovers autonomously after cooling, avoiding system latch-up. |
| Enable Logic | Active-high EN/UVLO - supports programmable undervoltage lockout (2.44–2.78 V range) via resistor divider for rail sequencing. |
| Load Current Monitor | 276 µA/A gain on ILM pin - provides analog current readback with <±1% gain drift over temperature for real-time telemetry. |
Pinout & Package
TPS259531DSGR uses an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad soldered to PCB ground for efficient heat dissipation (RθJB = 28.3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Capacitor-to-GND sets output slew rate; open for fastest turn-on (e.g., 38.2 V/ms at 12 V); enables inrush control without extra circuitry. |
| EN/UVLO | Analog input | Active-high enable with 1.1–1.27 V internal UVLO threshold; resistor divider from IN allows custom input undervoltage lockout (e.g., 2.7 V nominal). |
| IN | Power input | Dual-pin power entry (pins 3 & 4) reduces trace resistance and voltage drop; rated for 20 V absolute max. |
| OUT | Power output | Switched output delivering up to 4 A; clamped to 5.7 V during overvoltage events to protect downstream loads. |
| ILM | Analog I/O | Single pin sets current limit (via RILM to GND) and outputs proportional monitor voltage (276 µA/A) for diagnostics. |
| FLT | Digital output | Open-drain fault indicator pulled low during overcurrent, overvoltage, or thermal shutdown; requires external pull-up for system alerting. |
| GND | Ground | Pins 8 and exposed pad provide low-inductance return path; pad must be connected to PCB ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Fast overvoltage clamp | 5.7-V threshold with 5-µs response at 4 A eliminates need for external clamping components in 5-V systems. |
| Adjustable current limit | 0.5–4 A range set by single RILM resistor (487 Ω → 4.17 A), enabling precise protection matching load requirements. |
| Integrated load current monitor | 276 µA/A gain on ILM pin provides accurate real-time current telemetry without additional sense resistors or amplifiers. |
| Auto-retry thermal protection | 157°C shutdown with 93-ms retry interval enables self-recovery in transient overload conditions, improving system uptime. |
| Programmable UVLO | Resistor-divider on EN/UVLO pin allows custom input undervoltage lockout (e.g., 2.7 V) for reliable power sequencing. |
Applications
| Adapter-Powered SSDs | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Hot-plug insertion of M.2 NVMe SSDs into powered-backplane systems with 5-V or 12-V adapters. IC Role / Device Role / Timing Role: eFuse providing inrush limiting, overvoltage clamping, and current monitoring during plug-in event. Use Value: Prevents bus voltage sag and connector arcing; 5.7-V clamp protects NAND flash and controller from 12-V adapter overshoot. |
Use Scenario: Protecting 24-V DC field I/O channels in programmable logic controllers against short circuits and load dumps. IC Role / Device Role / Timing Role: Primary overcurrent and overvoltage protector with FLT pin signaling faults to MCU. Use Value: 34-mΩ RON minimizes voltage drop across channel; ±7.5% current limit accuracy ensures consistent trip points across temperature. |
| Multi-Function Printers | Smart Home White Goods |
Use Scenario: Power distribution to high-current motors (paper feed, fuser) and sensitive logic in all-in-one printers. IC Role / Device Role / Timing Role: Load switch with fast OVC and thermal shutdown preventing damage during motor stall or jam. Use Value: 5-µs overvoltage response halts energy delivery before motor driver ICs fail; auto-retry allows recovery after jam clears. |
Use Scenario: Protecting display backlight, pump, and compressor subsystems in refrigerators and washing machines. IC Role / Device Role / Timing Role: Fault-tolerant power switch with UL 2367 and IEC 62368-1 certification for safety-critical zones. Use Value: Certified compliance eliminates need for separate safety review; ILM pin enables predictive maintenance via current trend analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259530DSGR | Same 5.7-V OVC and WSON-8 package, but latches off during fault instead of auto-retry. | Suitable where permanent shutdown is required after overcurrent (e.g., medical device safety interlock). | Select when fault persistence is preferred over automatic recovery; verify system reset logic accommodates latch-off behavior. |
| TPS259421RVCR | Lower 2.5-A rating, 42-mΩ RON, 5.7-V OVC, and 6-pin WSON package; no ILM pin or UVLO adjustment. | Targeted at cost-sensitive, lower-current applications like USB-C PD sink ports or sensor hubs. | Choose for simpler designs needing basic OVC and current limit without telemetry or programmable enable; not pin-compatible. |
Compared with TPS259531DSGR, TPS259530DSGR offers identical protection specs but removes auto-retry for fail-safe shutdown, while TPS259421RVCR trades monitoring and adjustability for smaller size and lower cost at reduced current capacity.
Availability
TPS259531DSGR is available at Aetrix Electronics and suitable for adapter-powered SSDs, industrial PLC I/O modules, multi-function printers, smart home white goods, and set-top boxes requiring stable component supply and certified safety compliance.
Supply support for TPS259531DSGR 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 and embedded processing technologies, with leadership in power management innovation.
The TPS2595xx family is designed for robust circuit protection in high-reliability industrial, computing, and consumer systems-delivering integrated eFuse functionality in minimal footprint without compromising speed or accuracy.
FAQ
What is the overvoltage clamp threshold and response time for TPS259531DSGR?
The TPS259531DSGR features a fixed 5.7-V (typical) overvoltage clamp with a 5-µs response time at 4-A load current. This specification is guaranteed across –40°C to 125°C and does not require external components, making it ideal for protecting 5-V downstream circuits from input surges in adapter-powered systems.
How is current limiting configured on TPS259531DSGR?
Current limiting on TPS259531DSGR is set using a single resistor (RILM) from the ILM pin to GND. With RILM = 487 Ω, the device limits output current to 4.17 A (±7.5%). The same ILM pin provides a 276 µA/A analog monitor signal, enabling simultaneous protection and telemetry without added components.
Does TPS259531DSGR support programmable undervoltage lockout?
Yes, TPS259531DSGR supports programmable undervoltage lockout via its EN/UVLO pin. A resistor divider from IN to GND sets the enable threshold; for example, a 100-kΩ/100-kΩ divider yields ~2.5 V at EN/UVLO, triggering turn-on when input rises above 2.54 V (typical rising threshold) and turn-off below 2.43 V (typical falling threshold).
What thermal performance can be expected from TPS259531DSGR in its WSON-8 package?
In the 2.00 mm × 2.00 mm WSON-8 package, TPS259531DSGR achieves a junction-to-board thermal resistance (RθJB) of 28.3°C/W when the exposed pad is soldered to a solid GND plane. At 4 A and 34 mΩ RON, power dissipation is ~544 mW, resulting in ~15.4°C rise above board temperature-enabling reliable operation without heatsinks in most industrial layouts.
How does the fault indication (FLT) pin operate on TPS259531DSGR?
The FLT pin on TPS259531DSGR is an open-drain output that pulls low during overcurrent, overvoltage, or thermal shutdown events. It requires an external pull-up resistor (e.g., 10 kΩ to 3.3 V or 5 V) to generate a logic-low fault signal readable by a host MCU. The pin remains low until the fault condition clears and auto-retry completes (93 ms cycle).
TPS259531DSGR 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)
TPS259531DSGR FAQ
1.How can I place an order for TPS259531DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259531DSGR 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 TPS259531DSGR reliable?
The price and inventory of TPS259531DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259531DSGR is usually 5 days.
3.What payment methods are accepted for TPS259531DSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259531DSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259531DSGR?
TPS259531DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259531DSGR 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 TPS259531DSGR?
For technical support, including TPS259531DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259531DSGR requirements.
6.How does Aetrix verify that TPS259531DSGR is sourced from the original manufacturer or authorized distributors?
All TPS259531DSGR 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 TPS259531DSGR meets industry standards.
7.What is the process for return or replacement of TPS259531DSGR?
All TPS259531DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS259531DSGR, 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 TPS259531DSGR part is unused and in its original packaging.
Return procedure for TPS259531DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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