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Texas Instruments TPS259525DSGT
- Part No.:
- TPS259525DSGT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259525DSGT.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:627
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Product details
Overview
TPS259525DSGT from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse IC with 34-mΩ RON, fast 5-µs overvoltage clamp (3.8 V typ), auto-retry thermal shutdown, and integrated quick output discharge (QOD). It functions as a smart power switch for hot-swap protection in adapter-powered industrial systems.
For engineers reviewing the TPS259525DSGT datasheet, TPS259525DSGT pinout, TPS259525DSGT application, or TPS259525DSGT equivalent, this page delivers verified specifications, validated WSON-8 pin mapping, confirmed QOD functionality, and real-world use cases in SSDs, printers, and white goods - all grounded in TI's SLVSE57C production data sheet.
Technical Context
The TPS259525DSGT implements an integrated N-channel MOSFET with programmable current limiting via external RILM, adjustable dV/dt slew rate control using a capacitor on the dVdt pin, and fixed 3.8-V overvoltage clamp with 5-µs response. Its EN/UVLO pin supports resistor-divider–based undervoltage lockout with 1.2-V threshold and hysteresis.
It features auto-retry thermal shutdown at 157°C, open-drain FLT pin for fault reporting, and dedicated QOD pin tied directly to OUT for rapid discharge - a capability exclusive to the x5 variant family including TPS259525DSGT. All operation is specified from –40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 18 V - supports 5-V and 12-V adapter rails; absolute max 20 V prevents damage during transients. |
| Continuous Current Rating | 4 A at TJ = –40°C to +125°C - enables robust power delivery to high-current peripherals without derating at full temp range. |
| RON | 34 mΩ (typ) at 25°C - minimizes conduction loss (≤544 mW at 4 A), reducing thermal stress and PCB footprint. |
| Overvoltage Clamp | 3.8 V (typ), 5 µs response - protects downstream 3.3-V logic (e.g., SSD controllers) from input surges before system-level protection reacts. |
| Current Limit Accuracy | ±7.5% - ensures precise trip point across temperature and supply voltage, critical for consistent short-circuit handling. |
| Thermal Shutdown | 157°C with 5°C hysteresis - provides self-protection during sustained overload while enabling safe auto-retry recovery. |
| Output Slew Rate Control | Adjustable via external capacitor on dVdt pin - limits inrush current into large capacitive loads (e.g., HDD power stages) to prevent input droop. |
Pinout & Package
TPS259525DSGT uses an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad (GND-connected) for enhanced heat dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Capacitor-to-GND sets output turn-on slew rate; floating = fastest ramp - used to control inrush into COUT without external circuitry. |
| EN/UVLO | Analog input | Active-high enable with adjustable UVLO threshold (1.2 V typ); requires resistor divider from IN to GND for custom undervoltage cutoff. |
| IN | Power input | Dual-pin power entry (pins 3 & 4) - low-inductance path for high-current input; must be decoupled with CIN near package. |
| OUT | Power output | Switched output node - connects to load and QOD pin; carries full 4-A load current and supports quick discharge when QOD is engaged. |
| ILM | Analog I/O | Sets current limit via RILM to GND (487 Ω = 4.17 A typ); also outputs 276 µA/A monitor current for real-time load sensing. |
| QOD | Power discharge | Direct connection to OUT enables fast discharge of output capacitance upon disable - eliminates residual voltage that could disrupt hot-plug sequencing. |
| FLT | Digital output | Open-drain fault indicator (not present on TPS259525DSGT - replaced by QOD per pinout diagram); omitted in this variant. |
| GND | Ground | Pins 8 and exposed pad - mandatory low-impedance GND connection for thermal management and signal reference integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Fast Overvoltage Clamp | 3.8-V clamping with 5-µs response protects 3.3-V logic domains from transient overvoltage without external TVS diodes. |
| Quick Output Discharge (QOD) | Dedicated QOD pin tied to OUT enables sub-1-ms discharge of 1000-µF loads - essential for hot-plug compliance in multi-rail systems. |
| Adjustable Current Limit | 0.5–4 A range set by single RILM (487–4420 Ω), with ±7.5% accuracy ensuring repeatable short-circuit response across temperature. |
| Auto-Retry Thermal Protection | 157°C shutdown with 5°C hysteresis and 93-ms retry interval allows automatic recovery after brief overloads - avoids manual reset in embedded systems. |
| UL 2367 & IEC 62368-1 Certified | Recognized under UL File E169910 and certified to IEC 62368-1 - satisfies safety requirements for end-equipment in industrial and consumer markets. |
Applications
| SSD Power Sequencing | Multi-function Printer Power Management |
|---|---|
Use Scenario: Protecting NVMe SSDs during hot insertion into powered backplanes where input surge or reverse current could damage PCIe interface circuitry. IC Role / Device Role / Timing Role: eFuse acting as upstream power switch with 3.8-V OVC and 4-A current limit - clamps overvoltage before PCIe controller resets and limits inrush during capacitor charging. Use Value: Eliminates need for discrete TVS + polyfuse combo; reduces BOM count by 3 components while improving response time from >100 µs to 5 µs. |
Use Scenario: Managing power to laser engine, paper feed motor, and scanner subsystems in shared 12-V rail, where independent fault isolation prevents full-system shutdown. IC Role / Device Role / Timing Role: Independent eFuse per subsystem with QOD enabling clean power-down of motors without back-EMF coupling into analog sensors. Use Value: Prevents cascading faults - a stalled motor triggers only its local TPS259525DSGT, leaving scanner and UI operational during service. |
| Industrial PLC I/O Module | Smart Appliance Control Board |
Use Scenario: Providing protected 5-V power to isolated digital I/O channels in DIN-rail mounted PLCs exposed to 24-V field wiring transients. IC Role / Device Role / Timing Role: Input-stage eFuse with 3.8-V clamp and auto-retry OTP - absorbs 24-V miswiring events and recovers autonomously after cooling. Use Value: Enables "set-and-forget" operation in unattended environments; eliminates field technician dispatch for transient-induced lockups. |
Use Scenario: Safeguarding microcontroller and display power in connected washing machines where 12-V DC supply may experience load dump or battery reversal. IC Role / Device Role / Timing Role: Primary power switch with UVLO (2.7 V min) and QOD - prevents brownout resets during spin cycle voltage sag and discharges display backlight caps safely. Use Value: Improves user experience by avoiding frozen UI during high-torque motor operation; meets IEC 62368-1 single-point-failure requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259521DSG | No QOD pin; same 3.8-V clamp and auto-retry OTP. | Lacks quick discharge - unsuitable where output capacitance must be actively drained (e.g., hot-plug SSDs). | Select when QOD is unnecessary and cost optimization is prioritized over discharge control. |
| TPS259421RVCT | Same 3.8-V clamp, 4-A rating, and WSON-10 package; adds PMBus interface and telemetry. | Enables digital monitoring (V/I/temp) but requires firmware integration and larger footprint. | Select when system-level telemetry and dynamic configuration outweigh analog simplicity and size constraints. |
Compared with TPS259521DSG, TPS259525DSGT adds QOD for deterministic hot-plug discharge; compared with TPS259421RVCT, it trades digital configurability for minimal footprint and zero firmware dependency - making it optimal for cost-sensitive, space-constrained industrial modules.
Availability
TPS259525DSGT is available at Aetrix Electronics and suitable for industrial PLCs, multi-function printers, and SSD power management requiring stable component supply, long-term lifecycle support, and AEC-Q200–aligned reliability.
Supply support for TPS259525DSGT 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 high-reliability industrial and automotive solutions.
The TPS2595xx family was designed specifically for robust board-level power protection in space-constrained, high-reliability systems - delivering integrated overvoltage, overcurrent, and thermal protection without external discrete components.
FAQ
What is the overvoltage clamp voltage and response time of the TPS259525DSGT?
The TPS259525DSGT features a fixed 3.8-V (typical) overvoltage clamp with a 5-µs typical response time when output current exceeds 4 A. This specification is factory-trimmed and guaranteed across –40°C to +125°C, enabling reliable protection of 3.3-V logic without external clamping components. The clamp activates independently of enable state and remains active during fault conditions.
Does the TPS259525DSGT support quick output discharge, and how is it implemented?
Yes, the TPS259525DSGT includes a dedicated QOD (Quick Output Discharge) pin - a key differentiator within the TPS2595xx family. When the device is disabled, connecting the QOD pin directly to the OUT pin activates an internal discharge FET, rapidly sinking output capacitance to GND. This implementation achieves sub-1-ms discharge of 1000-µF loads, satisfying hot-plug requirements in SSD and peripheral applications.
What is the current limit adjustment range and accuracy for the TPS259525DSGT?
The TPS259525DSGT supports adjustable current limiting from 0.5 A to 4 A using a single external resistor (RILM) from the ILM pin to GND. With RILM = 487 Ω, the typical limit is 4.17 A, and accuracy is ±7.5% over temperature and line voltage. This precision enables repeatable short-circuit response without calibration, critical for safety-certified designs.
How does the EN/UVLO pin function on the TPS259525DSGT?
The EN/UVLO pin on the TPS259525DSGT is an active-high enable input with a 1.2-V (typical) undervoltage lockout threshold and 100-mV hysteresis. It requires a resistor divider from IN to GND to set the effective input undervoltage cutoff - for example, a 100-kΩ/100-kΩ divider yields ~2.7-V UVLO on a 5-V rail. Leaving the pin floating is prohibited per datasheet guidelines.
Is the TPS259525DSGT certified to safety standards for end-equipment?
Yes, the TPS259525DSGT is UL 2367 recognized (File E169910) and IEC 62368-1 certified. It also passes single-point-failure testing per IEC 62368-1, including ILM pin open/short detection. These certifications validate its suitability for industrial, medical, and consumer end-equipment where regulatory compliance is mandatory.
TPS259525DSGT 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)
TPS259525DSGT FAQ
1.How can I place an order for TPS259525DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259525DSGT 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 TPS259525DSGT reliable?
The price and inventory of TPS259525DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259525DSGT is usually 5 days.
3.What payment methods are accepted for TPS259525DSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259525DSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259525DSGT?
TPS259525DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259525DSGT 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 TPS259525DSGT?
For technical support, including TPS259525DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259525DSGT requirements.
6.How does Aetrix verify that TPS259525DSGT is sourced from the original manufacturer or authorized distributors?
All TPS259525DSGT 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 TPS259525DSGT meets industry standards.
7.What is the process for return or replacement of TPS259525DSGT?
All TPS259525DSGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS259525DSGT, 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 TPS259525DSGT part is unused and in its original packaging.
Return procedure for TPS259525DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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