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Texas Instruments TPS259571DSGR
- Part No.:
- TPS259571DSGR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259571DSGR.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,552
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Product details
Overview
TPS259571DSGR from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse IC with 34 mΩ on-resistance, auto-retry thermal shutdown, and no overvoltage clamp functionality-designed for robust input-side power path protection in adapter-powered industrial systems and SSDs.
For engineers reviewing the TPS259571DSGR datasheet, TPS259571DSGR pinout, TPS259571DSGR application, or TPS259571DSGR equivalent, this page delivers verified electrical specs, WSON-8 package layout, current-limit accuracy (±7.5%), dV/dt slew control, and ILM-based load monitoring-all confirmed for the exact TPS259571DSGR variant per TI SLVSE57C Rev C.
Technical Context
The TPS259571DSGR implements an integrated N-channel MOSFET switch with programmable current limiting via external RILM (487 Ω → 4.17 A typical), adjustable output slew rate via external dVdt capacitor, and fault reporting through open-drain FLT pin. It operates across –40°C to +125°C junction temperature.
Unlike clamping variants (e.g., TPS259531DSGR), TPS259571DSGR omits internal overvoltage clamp circuitry and instead provides auto-retry thermal shutdown (TSD = 157°C, hysteresis = 5°C) and UVLO-enabled enable logic-making it suitable for systems where input overvoltage is managed upstream or not required.
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, and 12 V rails without external regulation |
| Continuous Output Current | 4 A at TJ ≤ 125°C - enables high-current load switching with thermal derating above 105°C |
| On-Resistance (RON) | 34 mΩ typ at 25°C - minimizes conduction loss (≤ 544 mW at 4 A) and self-heating in compact layouts |
| Current Limit Accuracy | ±7.5% - ensures predictable trip threshold across temperature and supply voltage for reliable fault containment |
| Enable Logic | Active-high EN/UVLO with 1.2 V typical threshold - allows resistor-divider programming of undervoltage lockout |
| Fault Response Mode | Auto-retry thermal shutdown - automatically recovers after cooling, avoiding manual reset in thermally transient environments |
| Load Current Monitor Gain | 276 µA/A typical - provides linear analog feedback for real-time current sensing without shunt resistors |
Pinout & Package
TPS259571DSGR uses an 8-pin WSON package (2.00 mm × 2.00 mm, 0.75 mm height) with exposed thermal pad connected to GND for enhanced heat dissipation. Pin 1 is dVdt; Pin 2 is EN/UVLO; Pins 3–4 are IN; Pin 5 is OUT; Pin 6 is FLT; Pin 7 is ILM; Pin 8 is GND; the exposed pad is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Capacitor-to-GND sets output turn-on slew rate; floating = fastest ramp (e.g., 38.2 V/ms at 12 V) |
| EN/UVLO | Analog input | Active-high enable with 1.2 V typical UVLO threshold; requires resistor divider for custom input undervoltage lockout |
| IN (Pins 3,4) | Power input | Dual-source input pins reduce trace inductance and improve current sharing into internal FET |
| OUT | Power output | Switched output node; connects to downstream load and optional quick-discharge circuitry (not used in TPS259571DSGR) |
| FLT | Digital output | Open-drain fault indicator pulled low during overcurrent, overtemperature, or UVLO fault; requires external pull-up |
| ILM | Analog I/O | Sets current limit via RILM to GND (e.g., 487 Ω → 4.17 A); also outputs 276 µA/A proportional to load current |
| GND (Pin 8 + Pad) | Ground | Primary ground reference and thermal path; exposed pad must be soldered to PCB GND plane for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current limit (0.5–4 A) | Set precisely with single external resistor (RILM), enabling scalable protection across multiple board variants |
| Integrated load current monitor | Eliminates need for external sense resistor and amplifier-reduces BOM count and layout area while maintaining ±7.5% accuracy |
| Programmable output slew rate | Controlled by external dVdt capacitor (e.g., 3300 pF → 12.4 V/ms at 12 V), preventing inrush-induced rail collapse |
| Auto-retry thermal shutdown | Resumes operation after cooling (93 ms retry interval), supporting unattended recovery in fanless industrial enclosures |
| UL 2367 & IEC 62368-1 certified | Validated for end-equipment safety compliance-including single-point-failure detection on ILM pin open/short |
Applications
| Hot-Swap Power Distribution | Adapter-Powered Embedded Systems |
|---|---|
Use Scenario: Inserting/replacing modules in live backplanes without disrupting system operation. IC Role / Device Role / Timing Role: Primary power path switch and fault isolator between hot-swap connector and downstream DC-DC converters. Use Value: Prevents bus voltage droop and fault propagation during insertion; auto-retry avoids manual intervention after thermal overload. |
Use Scenario: Powering industrial gateways or edge controllers from unregulated wall adapters subject to line transients. IC Role / Device Role / Timing Role: Input-stage protector that enforces current limit and monitors load draw before DC-DC regulation. Use Value: Eliminates need for discrete OVP+OCP circuits; ILM output enables firmware-based load diagnostics and predictive maintenance. |
| SSD/HDD Power Management | White Goods Control Boards |
Use Scenario: Managing 5 V or 12 V power to SATA/NVMe storage devices with strict inrush and short-circuit requirements. IC Role / Device Role / Timing Role: Inrush-limited, current-monitored power switch placed directly upstream of SSD power rails. Use Value: dVdt control limits inrush to <1 A peak; ±7.5% current limit accuracy ensures consistent trip behavior across temperature and unit variance. |
Use Scenario: Protecting motor driver and sensor subsystems in washing machines or refrigerators powered from shared SMPS rails. IC Role / Device Role / Timing Role: Branch-level eFuse providing independent fault containment for compressor, pump, and display modules. Use Value: UL 2367 recognition satisfies regional safety certification; thermal auto-retry accommodates intermittent motor stall conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259570DSGR | No OV clamp; latch-off thermal shutdown (vs. auto-retry in TPS259571DSGR) | Requires manual reset after thermal fault-unsuitable for inaccessible or remote deployments | Select when system-level fault handling mandates hard shutdown until host intervention |
| TPS259421LPGQ | Same 4-A rating and WSON-10 package but adds fast 5-µs overvoltage clamp (5.7 V) | Provides active overvoltage suppression-critical if input surge risk exists upstream of TPS259571DSGR | Choose when protecting against adapter overvoltage events is required alongside current limiting |
Compared with TPS259570DSGR, TPS259571DSGR enables autonomous recovery from thermal faults; compared with TPS259421LPGQ, it trades overvoltage clamping for lower cost and simpler layout-ideal when input overvoltage is mitigated externally.
Availability
TPS259571DSGR is available at Aetrix Electronics and suitable for hot-swap power distribution, adapter-powered embedded systems, and SSD/HDD power management requiring stable component supply, long-term lifecycle support, and full traceability.
Supply support for TPS259571DSGR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency.
The TPS2595xx family is designed for high-integration power path protection in space-constrained industrial, computing, and consumer systems-replacing discrete MOSFET + controller + sense resistor solutions with a single IC.
FAQ
What is the overvoltage protection capability of the TPS259571DSGR?
The TPS259571DSGR does not include internal overvoltage clamp circuitry-unlike TPS259531DSGR (5.7 V clamp) or TPS259541DSGR (13.7 V clamp). Its protection relies on upstream input conditioning or system-level OVP. This design choice reduces complexity and cost where overvoltage events are managed externally. The TPS259571DSGR remains fully functional for overcurrent, overtemperature, and undervoltage faults.
How do I configure the current limit for the TPS259571DSGR?
Set the TPS259571DSGR current limit using a single resistor (RILM) from the ILM pin to GND. For example, 487 Ω yields 4.17 A typical limit (±7.5%). Values from 487 Ω to 4420 Ω support 0.5 A to 4 A range. The ILM pin simultaneously provides analog current monitoring at 276 µA/A, enabling real-time load measurement without additional components.
Does the TPS259571DSGR support quick output discharge (QOD)?
No, the TPS259571DSGR does not support quick output discharge. QOD functionality is exclusive to TPS2595x5 variants (e.g., TPS259525DSGR, TPS259535DSGR), which feature a dedicated QOD pin. The TPS259571DSGR uses standard FLT pin behavior and lacks QOD circuitry-output discharge relies on external bleed resistors or downstream circuitry.
What is the thermal performance of the TPS259571DSGR in its WSON-8 package?
The TPS259571DSGR in WSON-8 (DSG) package has RθJA = 65.6°C/W and RθJB = 28.3°C/W. With proper PCB copper area under the exposed thermal pad, it sustains 4 A continuous current up to +125°C junction temperature. Derating begins above +105°C ambient; at 4 A and 12 V input, power dissipation is ~544 mW (I²R), requiring ≥1 cm² of 2-oz copper for safe operation.
Can the TPS259571DSGR be used with input voltages below 3 V?
Yes-the TPS259571DSGR supports input voltages down to 2.7 V per datasheet Section 7.3. Operation at 2.7 V is validated across temperature and load, though RON increases to 58 mΩ at –40°C to +125°C, raising conduction loss. For 3.3 V systems, typical RON is 36–40 mΩ, making it suitable for low-voltage industrial sensors and battery-backed subsystems.
TPS259571DSGR 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)
TPS259571DSGR FAQ
1.How can I place an order for TPS259571DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259571DSGR 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 TPS259571DSGR reliable?
The price and inventory of TPS259571DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259571DSGR is usually 5 days.
3.What payment methods are accepted for TPS259571DSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259571DSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259571DSGR?
TPS259571DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259571DSGR 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 TPS259571DSGR?
For technical support, including TPS259571DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259571DSGR requirements.
6.How does Aetrix verify that TPS259571DSGR is sourced from the original manufacturer or authorized distributors?
All TPS259571DSGR 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 TPS259571DSGR meets industry standards.
7.What is the process for return or replacement of TPS259571DSGR?
All TPS259571DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS259571DSGR, 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 TPS259571DSGR part is unused and in its original packaging.
Return procedure for TPS259571DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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