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Texas Instruments TPS259533DSGT
- Part No.:
- TPS259533DSGT
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TPS259533DSGT.pdf
- Description:
- IC ELECTRONIC FUSE 7.5% 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,954
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Product details
Overview
TPS259533DSGT from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse with 34-mΩ RON, 5.7-V fast overvoltage clamp (5 µs response), active-low enable with adjustable overvoltage lockout (OVLO), and integrated fault indication. It protects power rails in adapter-powered systems and industrial equipment against overvoltage, overcurrent, and thermal faults.
For engineers reviewing the TPS259533DSGT datasheet, TPS259533DSGT pinout, TPS259533DSGT application, or TPS259533DSGT equivalent, this page delivers verified specifications, WSON-8 package details, ILM-based current monitoring accuracy (±7.5%), auto-retry thermal shutdown behavior, and real-world hot-swap implementation guidance.
Technical Context
The TPS259533DSGT implements an integrated N-channel MOSFET switch with internal charge pump, precision current-sense amplifier, and fast analog overvoltage clamp circuitry. Its OVLO function uses a resistor divider on the EN/OVLO pin to set a user-defined input voltage cutoff threshold, while the 5.7-V output clamp activates independently within 5 µs during transients.
It operates in auto-retry thermal shutdown mode (93-ms interval) and supports adjustable slew rate via external dVdt capacitor. The FLT pin provides open-drain fault signaling for overvoltage, overcurrent, or thermal events - all without requiring external protection components beyond RILM and CdVdt.
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 |
| Continuous Output Current | 4 A at –40°C to +125°C - enables robust load switching in thermally constrained environments |
| RON (Typical) | 34 mΩ at 25°C - minimizes conduction loss (≤544 mW at 4 A) and self-heating |
| Overvoltage Clamp Threshold | 5.7 V (typ) - clamps output to safe level during input surges, preventing downstream IC damage |
| Current Limit Accuracy | ±7.5% - ensures predictable trip point across temperature and supply conditions |
| Clamp Response Time | 5 µs (typ) - reacts faster than most system-level transient suppressors |
| Thermal Shutdown Hysteresis | 5°C - prevents oscillation near trip point during sustained overload |
Pinout & Package
TPS259533DSGT is housed in an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad. The package supports high-power dissipation (RθJB = 28.3°C/W) and requires GND connection of the exposed pad for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| dVdt | Analog I/O | Capacitor-to-GND sets output turn-on slew rate; floating enables fastest ramp |
| EN/OVLO | Analog input | Active-low enable; resistor divider configures overvoltage lockout threshold (1.13–1.27 V internal reference) |
| IN | Power input | Main power rail input (2.7–18 V); connects to upstream supply or adapter |
| GND | Ground | Signal and power return; must connect exposed thermal pad to PCB GND plane |
| FLT | Digital output | Open-drain fault indicator pulled low during overvoltage, overcurrent, or thermal events |
| OUT | Power output | Switched output to protected load; clamped to 5.7 V during overvoltage |
| ILM | Analog I/O | Sets current limit via external resistor (487 Ω → 4.17 A); outputs 276 µA/A monitor signal |
Key Features
| Feature | Design Value |
|---|---|
| Fast Overvoltage Clamp | 5.7-V fixed clamp with 5-µs response time eliminates need for external TVS diodes in many applications |
| Adjustable Current Limit | 0.5 A to 4 A range set by single RILM; ±7.5% accuracy enables precise fault margining |
| Load Current Monitoring | ILM pin provides proportional analog voltage (276 µA/A) for real-time current telemetry without shunt resistor |
| Auto-Retry Thermal Protection | 93-ms retry interval after thermal shutdown allows automatic recovery once temperature falls below hysteresis threshold |
| IEC 62368-1 Certified | Complies with end-equipment safety standard for audio/video, IT, and communication technology equipment |
Applications
| Adapter Powered Systems | Industrial Control Panels |
|---|---|
Use Scenario: 12-V wall adapter powers programmable logic controller (PLC) I/O module with multiple isolated sensor inputs. IC Role / Device Role / Timing Role: eFuse provides input surge suppression, inrush limiting, and overcurrent isolation between adapter and sensitive digital circuitry. Use Value: Prevents adapter brownout during hot-plug and avoids latch-up caused by 5.7-V output clamping during line transients. |
Use Scenario: DIN-rail mounted HMI panel draws variable current from 24-V DC supply with potential for short-circuit faults in field wiring. IC Role / Device Role / Timing Role: Acts as intelligent power switch with auto-retry thermal shutdown and FLT-driven fault logging. Use Value: Enables safe field maintenance without powering down entire control cabinet; ±7.5% current limit accuracy ensures consistent trip behavior across operating temperatures. |
| Multi-function Printers | SSDs and HDDs |
Use Scenario: Printer mainboard sequentially powers paper feed, scanner, and print head subsystems from shared 5-V rail. IC Role / Device Role / Timing Role: Provides per-rail current limiting and fast OV clamp to protect ASICs during motor startup-induced supply bounce. Use Value: Eliminates need for discrete polyfuses and TVS arrays; 34-mΩ RON reduces voltage drop under 3-A peak loads. |
Use Scenario: SATA SSD receives 3.3-V or 5-V power from host controller with risk of hot-swap inrush and ESD-induced overvoltage. IC Role / Device Role / Timing Role: Serves as front-end protection device with 5-µs overvoltage clamp and ILM-based current monitoring for wear-leveling algorithms. Use Value: Meets UL 2367 recognition and IEC 62368-1 requirements for data storage devices; supports quick fault detection before NAND controller reset timeout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259531DSGT | Same 5.7-V clamp and auto-retry, but active-high EN/UVLO instead of active-low EN/OVLO | Requires high-side enable logic; unsuitable where system-level OVLO coordination is needed | Select when existing control logic drives EN high to activate, not low to disable |
| TPS259421RGET | Lower 2.5-A rating, 42-mΩ RON, no OV clamp (only UVLO/OVLO), different WQFN-20 package | Lacks fast overvoltage protection; requires external clamping for surge-prone environments | Choose only if 5.7-V clamp is unnecessary and board space permits larger package |
Compared with TPS259533DSGT, TPS259531DSGT offers identical protection features but inverted enable polarity, while TPS259421RGET trades clamp capability and compactness for lower current handling and larger footprint - making TPS259533DSGT optimal for space-constrained, surge-sensitive 4-A applications requiring active-low OVLO coordination.
Availability
TPS259533DSGT is available at Aetrix Electronics and suitable for adapter powered systems, industrial control panels, multi-function printers, and SSD/HDD power management requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TPS259533DSGT 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs and industrial-grade reliability.
The TPS2595xx family was designed specifically for robust, component-level power path protection in hot-swap, adapter-fed, and industrial systems - integrating fuse, TVS, and current monitor functions into a single WSON package.
FAQ
What is the overvoltage clamp threshold and response time of the TPS259533DSGT?
The TPS259533DSGT features a fixed 5.7-V (typ) output overvoltage clamp that activates within 5 µs (typ) when input exceeds the clamp threshold. This fast response protects downstream 5-V logic without requiring external TVS diodes. The clamp voltage remains stable across load currents up to 4 A and ambient temperatures from –40°C to +125°C, as validated in TI's SLVSE57C datasheet Figure 43.
How does the EN/OVLO pin function on the TPS259533DSGT?
The EN/OVLO pin on the TPS259533DSGT is an active-low input used to configure overvoltage lockout. A resistor divider from IN to GND sets the input voltage threshold; when the divided voltage exceeds 1.2 V (typ), the device disables the FET. This allows system-level coordination of power sequencing during input overvoltage events, distinct from the internal 5.7-V clamp which remains always active.
What is the current limit accuracy and adjustment range for the TPS259533DSGT?
The TPS259533DSGT achieves ±7.5% current limit accuracy across temperature and supply voltage. Using an external resistor RILM from the ILM pin to GND, the current limit is adjustable from 0.5 A (RILM = 4420 Ω) to 4.42 A (RILM = 487 Ω). The ILM pin also provides a 276 µA/A proportional monitor signal for real-time load current measurement.
Does the TPS259533DSGT include thermal protection, and how does it behave?
Yes, the TPS259533DSGT includes overtemperature protection with a 157°C (typ) shutdown threshold and 5°C hysteresis. When triggered, it enters auto-retry mode with a 93-ms interval between attempts to re-enable the FET. This behavior is confirmed in the Electrical Characteristics table (Section 7.5) and Figure 27 of the SLVSE57C datasheet, ensuring safe recovery without manual reset.
What package type and thermal characteristics does the TPS259533DSGT use?
The TPS259533DSGT uses an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad. Its thermal resistance is RθJB = 28.3°C/W (junction-to-board), enabling effective heat transfer to the PCB. The exposed pad must be soldered to a GND plane for both thermal performance and electrical stability, as specified in TI's layout guidelines (Section 11).
TPS259533DSGT 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)
TPS259533DSGT FAQ
1.How can I place an order for TPS259533DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259533DSGT 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 TPS259533DSGT reliable?
The price and inventory of TPS259533DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259533DSGT is usually 5 days.
3.What payment methods are accepted for TPS259533DSGT?
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TPS259533DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259533DSGT 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 TPS259533DSGT?
For technical support, including TPS259533DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259533DSGT requirements.
6.How does Aetrix verify that TPS259533DSGT is sourced from the original manufacturer or authorized distributors?
All TPS259533DSGT 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 TPS259533DSGT meets industry standards.
7.What is the process for return or replacement of TPS259533DSGT?
All TPS259533DSGT units undergo pre-shipment inspection (PSI). If there is an issue with TPS259533DSGT, 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 TPS259533DSGT part is unused and in its original packaging.
Return procedure for TPS259533DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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