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Texas Instruments TPS259535DSGT
- Part No.:
- TPS259535DSGT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259535DSGT.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:113
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Product details
Overview
TPS259535DSGT from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse IC with 34-mΩ RON, 5.7-V fast overvoltage clamp (5 µs response), adjustable current limit (0.5–4 A), and integrated quick output discharge (QOD) functionality. It protects power rails in adapter-powered systems and SSDs against overcurrent, overvoltage, and inrush surges.
For engineers reviewing the TPS259535DSGT datasheet, TPS259535DSGT pinout, TPS259535DSGT application, or TPS259535DSGT equivalent, key selection criteria include its auto-retry thermal shutdown behavior, active-high enable with UVLO, QOD support for controlled turn-off, and IEC 62368-1/UL 2367 safety certification for industrial and consumer end equipment.
Technical Context
The TPS259535DSGT implements an integrated N-channel MOSFET with precision current-sense amplifier and analog control loop for ±7.5% current-limit accuracy. Its overvoltage protection uses internal clamping circuitry-no external components required-and responds within 5 µs at 4-A load to hold output at ≤5.7 V during input transients.
It features dual-function ILM pin for setting current limit via external resistor (RILM = 487 Ω → 4.17 A typical) and monitoring real-time load current (276 µA/A gain). The dVdt pin accepts a capacitor to program output slew rate (e.g., 3300 pF yields ~11.6 V/ms at 5 V).
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 |
| Continuous Current Rating | 4 A at –40°C to +125°C - enables robust hot-swap in multi-rail systems |
| RON (Typical) | 34 mΩ at 25°C - limits conduction loss to <136 mW at 4 A, reducing thermal stress |
| Overvoltage Clamp | 5.7 V (typ), 5 µs response - clamps transient spikes before downstream ICs are damaged |
| Current Limit Accuracy | ±7.5% - ensures predictable fault threshold across temperature and production lot |
| Enable Logic | Active-high EN/UVLO with 1.2 V threshold - allows direct connection to 3.3-V logic or resistor-divider for custom UVLO |
| Thermal Shutdown | 157°C with 5°C hysteresis and 93-ms auto-retry - sustains operation under sustained overload without latch-off |
Pinout & Package
TPS259535DSGT is housed in an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad (GND-connected) for enhanced heat dissipation in high-current applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Capacitor-to-GND sets output slew rate; floating = fastest turn-on (~38 V/ms at 12 V) |
| EN/UVLO | Analog input | Active-high enable; resistor divider configures undervoltage lockout (e.g., 2.7 V rising threshold) |
| IN (pins 3,4) | Power input | Dual-source input pins reduce trace resistance and improve current handling |
| OUT | Power output | Switched output node; connects to load and QOD pin for controlled discharge |
| ILM | Analog I/O | Sets current limit via RILM; voltage proportional to load current (276 µA/A) |
| QOD | Power discharge | Internal NMOS sink tied to OUT; discharges COUT when EN deasserts (replaces external FET) |
| GND (pin 8 + pad) | Ground reference | Primary return path; exposed pad must be soldered to PCB GND plane for thermal and electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| Fast overvoltage clamp | 5.7-V threshold with 5-µs response prevents damage to 5-V logic and storage interfaces |
| Quick output discharge (QOD) | Integrated sink eliminates need for external discharge FET and reduces BOM count |
| Adjustable current limit | 0.5–4 A range set by single resistor (RILM = 487 Ω → 4.17 A typical) |
| Load current monitor | 276 µA/A gain on ILM pin enables accurate real-time current telemetry without shunt resistor |
| Auto-retry thermal shutdown | 93-ms recovery interval after 157°C trip allows temporary overload without system reset |
Applications
| Adapter-Powered Systems | SSDs and HDDs |
|---|---|
Use Scenario: 12-V wall adapter supplies power to embedded controller and peripherals in kiosks or POS terminals. IC Role / Device Role / Timing Role: eFuse provides inrush current limiting, overvoltage clamping, and short-circuit protection between adapter and system rail. Use Value: Prevents brownouts during plug-in and suppresses 18-V adapter transients to safe 5.7-V clamp level. | Use Scenario: SATA or NVMe SSD receives power from motherboard VRM with strict inrush and fault isolation requirements. IC Role / Device Role / Timing Role: Acts as upstream power switch with programmable slew rate and fast OVC response to protect NAND flash and controller. Use Value: QOD ensures rapid discharge of SSD bulk capacitance during hot removal, meeting PCIe hot-plug compliance. |
| Industrial Control Panels | Set-Top Boxes |
Use Scenario: PLC I/O module powered from 24-V DC supply with multiple field-connected loads. IC Role / Device Role / Timing Role: Provides per-rail current limiting and fault indication (FLT pin) for diagnostics and predictive maintenance. Use Value: ±7.5% current accuracy enables reliable detection of partial shorts (e.g., 2.5-A fault vs 4-A limit), reducing false trips. | Use Scenario: Consumer STB with USB peripherals, HDMI, and tuner subsystems sharing a common 12-V rail. IC Role / Device Role / Timing Role: eFuse isolates downstream domains during overcurrent events while maintaining system-level fault signaling. Use Value: UL 2367 and IEC 62368-1 certification satisfies global safety agency requirements for Class I consumer devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259531DSGT | No QOD pin; same 5.7-V OVC, auto-retry, and EN/UVLO | Lacks quick discharge - requires external circuit for controlled COUT discharge | Select when QOD is unnecessary and cost optimization is prioritized |
| TPS259421RGET | Lower 2.7–20-V range, 3.5-A rating, 42-mΩ RON, no OVC clamp | Relies on external TVS for overvoltage; suited for lower-current, non-clamp-required designs | Select when overvoltage clamping is handled externally and 4-A capability is not needed |
Compared with TPS259531DSGT, TPS259535DSGT adds QOD for safer hot-plug operation; compared with TPS259421RGET, it delivers tighter current accuracy, faster OVC response, and integrated clamping-critical for adapter-fed and storage applications.
Availability
TPS259535DSGT is available at Aetrix Electronics and suitable for adapter-powered systems, SSD/HDD power management, and industrial control panels requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TPS259535DSGT 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, efficiency, and system-level integration.
The TPS2595xx family is designed for high-density power distribution in space-constrained systems-delivering comprehensive circuit protection (OVC, OCP, OTP, UVP) with minimal external components for industrial, computing, and consumer end equipment.
FAQ
What is the overvoltage clamp threshold and response time of the TPS259535DSGT?
The TPS259535DSGT has a factory-set overvoltage clamp threshold of 5.7 V (typical), with a response time of 5 µs when output current is 4 A. This clamping action holds the OUT pin at ≤5.7 V during input transients, protecting downstream 5-V logic without requiring external components. The specification is guaranteed across –40°C to +125°C and validated per TI's production test flow.
Does the TPS259535DSGT support quick output discharge, and how is it implemented?
Yes, the TPS259535DSGT supports quick output discharge via its dedicated QOD pin. When the EN pin is deasserted, an internal NMOS transistor connects QOD to OUT, actively sinking current to discharge output capacitance. No external FET or resistor is needed-this feature is unique to the "x5" variant (e.g., TPS259535DSGT) and simplifies hot-plug compliance in SSD and peripheral applications.
How is current limit set and monitored on the TPS259535DSGT?
Current limit on the TPS259535DSGT is set by an external resistor (RILM) from the ILM pin to GND: RILM = 487 Ω yields 4.17 A typical limit. Load current is monitored via the same ILM pin, which outputs 276 µA per ampere of output current-enabling precise telemetry without a shunt resistor. Both functions share the same pin but operate independently under normal conditions.
What thermal protection features does the TPS259535DSGT include?
The TPS259535DSGT includes overtemperature protection that triggers at 157°C junction temperature, with 5°C hysteresis and a 93-ms auto-retry interval. Unlike latch-off variants, this auto-retry behavior allows temporary overload recovery without manual reset-ideal for intermittent surge conditions in industrial and adapter-powered systems. Thermal metrics include RθJA = 65.6°C/W (WSON-8).
Is the TPS259535DSGT certified to safety standards?
Yes, the TPS259535DSGT is certified to IEC 62368-1 and recognized under UL 2367 (File E169910). It also passes the single-point failure test per IEC 62368-1, including ILM pin open/short detection. These certifications validate its use in safety-critical consumer, industrial, and computing applications where regulatory compliance is mandatory.
TPS259535DSGT 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)
TPS259535DSGT FAQ
1.How can I place an order for TPS259535DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259535DSGT 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 TPS259535DSGT reliable?
The price and inventory of TPS259535DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259535DSGT is usually 5 days.
3.What payment methods are accepted for TPS259535DSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259535DSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259535DSGT?
TPS259535DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259535DSGT 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 TPS259535DSGT?
For technical support, including TPS259535DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259535DSGT requirements.
6.How does Aetrix verify that TPS259535DSGT is sourced from the original manufacturer or authorized distributors?
All TPS259535DSGT 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 TPS259535DSGT meets industry standards.
7.What is the process for return or replacement of TPS259535DSGT?
All TPS259535DSGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS259535DSGT, 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 TPS259535DSGT part is unused and in its original packaging.
Return procedure for TPS259535DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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