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Texas Instruments TPS259535DSGR
- Part No.:
- TPS259535DSGR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259535DSGR.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:8,998
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Product details
Overview
TPS259535DSGR 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 hot-swap, SSD, and industrial systems against overcurrent, overvoltage, and inrush surges.
For engineers reviewing the TPS259535DSGR datasheet, TPS259535DSGR pinout, TPS259535DSGR application, or TPS259535DSGR equivalent, this page delivers verified specifications, WSON-8 package details, QOD-enabled fault recovery behavior, thermal shutdown (157°C), and design-meaningful alternatives for adapter-powered and high-reliability embedded systems.
Technical Context
The TPS259535DSGR implements an integrated N-channel MOSFET switch with precision current sensing via ILM pin, programmable dV/dt control using external capacitor, and auto-retry thermal shutdown. Its overvoltage protection uses internal clamping-not external components-to hold output at 5.7 V (typ) during transients.
This variant features active-high EN/UVLO with adjustable undervoltage lockout, QOD pin tied directly to OUT for rapid discharge, and IEC 62368-1 certification with single-point-failure detection on ILM pin. It operates across –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 3.3-V and 5-V rails up to 12-V industrial supplies; absolute max 20 V. |
| Continuous Output Current | 4 A at TJ = –40°C to +125°C - enables robust load switching without derating in compact layouts. |
| On-Resistance (RON) | 34 mΩ (typ) at 25°C - minimizes conduction loss (≤550 mW at 4 A) and self-heating in WSON-8 package. |
| Overvoltage Clamp Threshold | 5.7 V (typ), ±0.2 V - clamps transient spikes before downstream ICs exceed absolute max ratings. |
| Current Limit Accuracy | ±7.5% - ensures predictable trip point across temperature and supply voltage for reliable fault isolation. |
| Output Slew Rate Control | Adjustable via dVdt pin capacitor (3300 pF typical) - prevents inrush-induced voltage droop or rail collapse. |
| Fault Response Time | 5 µs short-circuit detection - faster than most discrete solutions, limiting energy delivered during faults. |
Pinout & Package
TPS259535DSGR is housed in an 8-pin WSON package (2.00 mm × 2.00 mm, 0.75-mm height) with exposed thermal pad (GND-connected) for enhanced power dissipation. Junction-to-board thermal resistance is 28.3°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Connects to external capacitor to set output turn-on slew rate; floating = fastest ramp. |
| EN/UVLO | Analog input | Active-high enable; resistor divider sets UVLO threshold (1.1–1.27 V) for input-dependent startup control. |
| IN (pins 3,4) | Power input | Dual-source input pins reduce trace inductance and improve high-current path integrity. |
| OUT | Power output | Switched output node; connects to QOD pin in TPS259535DSGR for controlled discharge when disabled. |
| ILM | Analog I/O | Sets current limit via RILM (487 Ω → 4.17 A); outputs 276 µA/A monitor signal for real-time load current sensing. |
| QOD | Power discharge | Direct connection to OUT enables fast (<1 ms) output discharge upon disable-critical for hot-swap safety. |
| GND (pin 8 + pad) | Ground reference | Primary ground return and thermal path; exposed pad must be soldered to PCB GND plane for thermal compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Fast Overvoltage Clamp | 5.7-V fixed clamp with 5-µs response eliminates need for external TVS diodes in 5-V systems. |
| Quick Output Discharge (QOD) | Integrated discharge path reduces OUT voltage to <100 mV within 1 ms after disable-enables safe hot-plug sequencing. |
| Adjustable Current Limit | 0.5–4 A range set by single resistor (487–4420 Ω); ±7.5% accuracy ensures repeatable fault thresholds across batches. |
| Auto-Retry Thermal Shutdown | 157°C trip with 5°C hysteresis and 93-ms retry interval-maintains system availability during temporary overload conditions. |
| IEC 62368-1 Certification | Validated for single-point-failure safety: detects ILM open/short and disables output to prevent hazardous energy release. |
Applications
| Hot-Swap Server Modules | Industrial SSD Power Management |
|---|---|
Use Scenario: Inserting/removing PCIe add-in cards or backplane modules while system remains powered. IC Role / Device Role / Timing Role: eFuse providing inrush current limiting, overvoltage clamping, and fast fault isolation during live insertion. Use Value: Prevents bus voltage sag and upstream supply instability; QOD ensures safe discharge before reinsertion. |
Use Scenario: Protecting NVMe SSDs from power rail faults caused by connector arcing or transient surges. IC Role / Device Role / Timing Role: Primary overcurrent and overvoltage protector on 3.3-V or 5-V VCC rail with precise current monitoring. Use Value: ±7.5% current limit accuracy avoids nuisance tripping during burst writes; 5.7-V clamp guards against 12-V coupling faults. |
| Adapter-Powered Consumer Electronics | White Goods Motor Control Boards |
Use Scenario: AC/DC adapter powering set-top boxes or smart displays where input voltage varies with line conditions. IC Role / Device Role / Timing Role: Input supervisor enforcing 3.0-V minimum start-up and clamping 5-V rail against adapter overshoot. Use Value: UVLO threshold programmability accommodates low-dropout adapters; 5-µs OVC response prevents latch-up in SoCs. |
Use Scenario: Power distribution to BLDC motor drivers and sensor interfaces in washing machines or refrigerators. IC Role / Device Role / Timing Role: Fault-tolerant power switch with thermal auto-retry during motor stall events. Use Value: 157°C thermal shutdown with 93-ms retry allows brief overloads without permanent shutdown-improves user experience. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259531DSG | No QOD pin; same 5.7-V clamp, auto-retry, and EN/UVLO interface. | Lacks quick discharge-requires external circuitry for safe hot-swap discharge. | Select when QOD is unnecessary and board space permits discrete discharge solution. |
| TPS259421RTER | Lower 2.7–20-V range, 3.5-A rating, 42-mΩ RON, no programmable dV/dt. | Higher RON increases conduction loss; lacks slew rate control for sensitive loads. | Choose for cost-sensitive designs where 4-A capacity and dV/dt tuning are not required. |
Compared with TPS259535DSGR, TPS259531DSG omits QOD-increasing hot-swap risk without added components-while TPS259421RTER trades off current capacity, RON, and dV/dt flexibility for lower unit cost in less demanding applications.
Availability
TPS259535DSGR is available at Aetrix Electronics and suitable for hot-swap server modules, industrial SSD power management, and adapter-powered consumer electronics requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TPS259535DSGR 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 eFuse innovation.
The TPS2595xx family was designed for high-reliability power rail protection in space-constrained, thermally demanding applications-including data center, industrial, and consumer electronics-where fast fault response and safety certification are mandatory.
FAQ
What is the overvoltage clamp voltage of the TPS259535DSGR?
The TPS259535DSGR features a fixed 5.7-V (typical) overvoltage clamp with ±0.2-V tolerance. When input voltage exceeds this threshold, the device clamps output to protect downstream 5-V logic, achieving response in 5 µs. This value is factory-programmed and requires no external components-unlike programmable OVLO variants such as TPS259573DSG.
Does the TPS259535DSGR support quick output discharge, and how is it implemented?
Yes, the TPS259535DSGR integrates Quick Output Discharge (QOD) functionality. Pin 6 is labeled QOD-not FLT-and must be connected directly to the OUT pin. Upon disable, this path discharges the output capacitance to <100 mV within 1 ms, enabling safe hot-swap operation. This differs from FLT-only variants like TPS259531DSG, which require external discharge circuitry.
What is the recommended RILM value to achieve 4-A current limiting with the TPS259535DSGR?
To set a nominal 4-A current limit, use RILM = 487 Ω between the ILM pin and GND. Per datasheet Table 7.5, this yields ILIMIT = 4.17 A (typ) with ±7.5% accuracy across temperature. Values below 487 Ω are not recommended-RILM < 487 Ω risks exceeding maximum ILM pin current and invalidates accuracy specs.
How does the TPS259535DSGR handle thermal overload conditions?
The TPS259535DSGR triggers thermal shutdown at 157°C junction temperature and enters auto-retry mode with 5°C hysteresis and a 93-ms retry interval. During sustained overload, it cycles ON/OFF without latching off-maintaining partial system functionality. This behavior is confirmed in Section 7.5 (TSD parameter) and Figure 27 of the SLVSE57C datasheet.
Is the TPS259535DSGR certified to IEC 62368-1, and what does that cover?
Yes, the TPS259535DSGR is IEC 62368-1 certified (as stated in Features section, page 1). Certification covers safe operation during single-point failures-including ILM pin open/short detection-which forces output disable to prevent hazardous energy release. UL 2367 recognition (File E169910) further validates its safety case for end-equipment approval.
TPS259535DSGR 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)
TPS259535DSGR FAQ
1.How can I place an order for TPS259535DSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259535DSGR 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 TPS259535DSGR reliable?
The price and inventory of TPS259535DSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259535DSGR is usually 5 days.
3.What payment methods are accepted for TPS259535DSGR?
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4.How is shipping managed for TPS259535DSGR?
TPS259535DSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259535DSGR 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 TPS259535DSGR?
For technical support, including TPS259535DSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259535DSGR requirements.
6.How does Aetrix verify that TPS259535DSGR is sourced from the original manufacturer or authorized distributors?
All TPS259535DSGR 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 TPS259535DSGR meets industry standards.
7.What is the process for return or replacement of TPS259535DSGR?
All TPS259535DSGR units undergo pre-shipment inspection (PSI). If there is an issue with TPS259535DSGR, 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 TPS259535DSGR part is unused and in its original packaging.
Return procedure for TPS259535DSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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