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Texas Instruments TPS259570DSGT
- Part No.:
- TPS259570DSGT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259570DSGT.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:983
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Product details
Overview
TPS259570DSGT from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse IC with 34 mΩ on-resistance, latch-off thermal shutdown, active-high enable, and no overvoltage clamp - designed for robust input protection in adapter-powered industrial systems and SSDs.
For engineers reviewing the TPS259570DSGT datasheet, TPS259570DSGT pinout, TPS259570DSGT application, or TPS259570DSGT equivalent, key selection criteria include adjustable current limit (0.5–4 A), ±7.5% current limit accuracy, 5 µs short-circuit response, dV/dt-controlled slew rate, and IEC 62368-1 certification for safety-critical power paths.
Technical Context
The TPS259570DSGT implements a single-channel integrated FET hot-swap controller with internal charge pump drive, programmable current limiting via RILM, and load current monitoring via analog ILM pin output (276 µA/A gain). It lacks factory-set overvoltage clamping circuitry - distinguishing it from TPS25952x/3x/4x variants.
Its enable logic is active-high with UVLO threshold (1.1–1.27 V at EN/UVLO pin), and fault reporting is handled by open-drain FLT pin. Thermal protection triggers at 157°C with 5°C hysteresis and latches off until reset - unlike auto-retry variants such as TPS259571DSGT.
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 without external regulation |
| Continuous Output Current | 4 A at –40°C to +125°C - enables high-current downstream loads like SSD controllers or multi-function peripherals |
| On-Resistance (RON) | 34 mΩ typical at 25°C - minimizes conduction loss (≤544 mW at 4 A) and self-heating under full load |
| Current Limit Accuracy | ±7.5% - ensures predictable trip point across temperature and supply voltage for reliable overcurrent protection |
| Short-Circuit Response Time | 5 µs - rapidly disables output during hard shorts to prevent damage to upstream source or PCB traces |
| Thermal Shutdown Threshold | 157°C with 5°C hysteresis - protects internal MOSFET during sustained overload or poor heatsinking |
| Quiescent Current | 250 µA typical - low standby draw suitable for always-on industrial control modules |
Pinout & Package
TPS259570DSGT is housed in an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad (GND-connected) for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Connect external capacitor to GND to set output turn-on slew rate; floating = fastest rise |
| EN/UVLO | Analog Input | Active-high enable with adjustable undervoltage lockout; resistor divider sets input UV threshold |
| IN | Power Input | Main power input (2.7–18 V); connects to upstream supply or adapter |
| GND | Ground | Signal and power ground reference; exposed pad must be soldered to PCB GND plane |
| FLT | Digital Output | Open-drain fault indicator - pulled low on overcurrent, overtemperature, or UVLO event |
| OUT | Power Output | Protected output to downstream load; internally limited to 4 A continuous |
| ILM | Analog I/O | Sets current limit via RILM to GND (487 Ω → 4.17 A); also outputs proportional monitor voltage |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Current Limit | 0.5 A to 4 A via single RILM resistor - eliminates need for multiple BOM variants |
| Load Current Monitoring | 276 µA/A gain on ILM pin - enables real-time current telemetry without shunt resistor or amplifier |
| Programmable Slew Rate | Configurable dV/dt via external capacitor - prevents inrush-induced voltage droop or rail collapse |
| Latch-Off Fault Response | FLT asserts and output remains disabled until EN toggled - ensures safe manual recovery after fault |
| IEC 62368-1 Certification | Validated for end-equipment safety compliance - reduces certification burden for industrial and white-goods designs |
Applications
| Industrial Power Distribution | SSD & HDD Power Management |
|---|---|
|
Use Scenario: Protecting 12-V backplane-fed PLC I/O modules from hot-swap transients and cable faults. IC Role / Device Role / Timing Role: eFuse providing input-side overcurrent, thermal, and UV protection with latch-off behavior. Use Value: Prevents bus-wide shutdown during single-module failure; supports field-replaceable design without system reboot. |
Use Scenario: Securing SATA/M.2 SSD power rail against inrush surges and short circuits during insertion. IC Role / Device Role / Timing Role: Hot-swap controller with 5 µs short-circuit response and programmable dV/dt ramp. Use Value: Eliminates need for discrete MOSFET + gate driver + sense resistor; meets JEDEC MO-220 GD footprint constraints. |
| Adapter-Powered Consumer Electronics | Multi-Function Printers |
|
Use Scenario: Regulating unregulated wall-adapter input (5–18 V) to printer subsystems with varying load profiles. IC Role / Device Role / Timing Role: Input protector with adjustable UVLO and 4-A current limit for motor + logic + sensor rails. Use Value: Single-chip solution replaces discrete polyfuse + TVS + regulator; supports universal adapter compatibility. |
Use Scenario: Isolating paper-handling motor, scanner lamp, and control logic from shared 24-V supply. IC Role / Device Role / Timing Role: Channelized eFuse enabling independent fault management per subsystem. Use Value: Enables graceful degradation - e.g., jam detection halts motor but preserves UI and network functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259571DSGT | Same pinout and specs, but auto-retry thermal shutdown instead of latch-off | Suitable where automatic recovery after transient overload is required | Select when system must resume operation without manual intervention after thermal fault |
| TPS259531DSGT | Includes 5.7-V fixed overvoltage clamp (5 µs response); same latch-off and enable logic | Required in systems needing protection against input surges beyond 18-V absolute max | Select when upstream supply may experience >18-V transients not covered by TPS259570DSGT's 20-V abs max rating |
Compared with TPS259570DSGT, TPS259571DSGT offers autonomous recovery from thermal events but risks repeated stress under persistent overload, while TPS259531DSGT adds critical overvoltage clamping at the cost of reduced output headroom below 5.7 V.
Availability
TPS259570DSGT is available at Aetrix Electronics and suitable for industrial power distribution, SSD/HDD protection, and adapter-powered consumer electronics requiring stable component supply and long-term lifecycle support.
Supply support for TPS259570DSGT 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 technologies with decades of industrial-grade reliability validation.
The TPS2595xx family is engineered for robust circuit protection in space-constrained, safety-certified applications - delivering integrated FET, current sensing, and fault reporting in a thermally optimized WSON package.
FAQ
What is the overvoltage protection capability of the TPS259570DSGT?
The TPS259570DSGT does not include internal overvoltage clamping circuitry - unlike TPS25952x/3x/4x variants. Its absolute maximum input voltage is 20 V, and it relies on upstream protection or external clamps for overvoltage events. This makes TPS259570DSGT ideal for systems where input transients are controlled externally or where fixed OV thresholds are unnecessary.
How do I configure the current limit for the TPS259570DSGT?
Set the current limit for the TPS259570DSGT by connecting a resistor (RILM) between the ILM pin and GND. For example, 487 Ω yields ~4.17 A limit (±7.5%). The device supports 0.5–4 A range using RILM values from 4.42 kΩ down to 487 Ω. Do not leave ILM floating - it must be terminated to GND for proper operation.
Does the TPS259570DSGT support quick output discharge (QOD)?
No, the TPS259570DSGT does not support quick output discharge. QOD functionality is exclusive to TPS2595x5 variants (e.g., TPS259525DSGT, TPS259535DSGT), which feature a dedicated QOD pin. The TPS259570DSGT uses standard OUT pin behavior with no internal discharge path - external circuitry is required if fast turn-off discharge is needed.
What is the thermal performance of the TPS259570DSGT in its WSON package?
The TPS259570DSGT in the 8-pin WSON package has a junction-to-board thermal resistance (RθJB) of 28.3°C/W and junction-to-ambient (RθJA) of 65.6°C/W. With proper PCB copper area under the exposed thermal pad, it sustains 4 A continuous current at +125°C ambient. Derating is recommended above 85°C ambient without forced airflow or enhanced heatsinking.
Can the TPS259570DSGT be used in IEC 62368-1 certified end equipment?
Yes, the TPS259570DSGT is IEC 62368-1 certified and qualified for safe operation during single-point failure testing (e.g., ILM pin open/short detection). Its integrated protection features - including ±7.5% current limit accuracy, 5 µs fault response, and latch-off thermal shutdown - directly support compliance requirements for Class I and Class II power supplies in audio/video and IT equipment.
TPS259570DSGT 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)
TPS259570DSGT FAQ
1.How can I place an order for TPS259570DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259570DSGT 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 TPS259570DSGT reliable?
The price and inventory of TPS259570DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259570DSGT is usually 5 days.
3.What payment methods are accepted for TPS259570DSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259570DSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259570DSGT?
TPS259570DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259570DSGT 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 TPS259570DSGT?
For technical support, including TPS259570DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259570DSGT requirements.
6.How does Aetrix verify that TPS259570DSGT is sourced from the original manufacturer or authorized distributors?
All TPS259570DSGT 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 TPS259570DSGT meets industry standards.
7.What is the process for return or replacement of TPS259570DSGT?
All TPS259570DSGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS259570DSGT, 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 TPS259570DSGT part is unused and in its original packaging.
Return procedure for TPS259570DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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