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Texas Instruments TPS259251DRCR
- Part No.:
- TPS259251DRCR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS259251DRCR.pdf
- Description:
- IC ELECTRONIC FUSE 15% 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,055
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Product details
Overview
TPS259251DRCR from Texas Instruments is a 5-V eFuse protection switch with integrated 30-mΩ pass MOSFET, fixed 6.1-V overvoltage clamp, and auto-retry thermal shutdown. It delivers adjustable current limiting (2–5 A ±15%), programmable output slew rate via dV/dT pin, and UVLO threshold of 4.3 V. Used in HDD/SSD power rails and PCIe auxiliary supplies for robust short-circuit and inrush current protection.
For engineers reviewing the TPS259251DRCR datasheet, TPS259251DRCR pinout, TPS259251DRCR application, or TPS259251DRCR equivalent, key selection criteria include its auto-retry fault response (vs latched), 5-V system compatibility, 10-pin VSON package footprint, and RILIM-based current limit accuracy across temperature.
Technical Context
The TPS259251DRCR implements a dual-stage current protection architecture: a fast-trip comparator (160% of IOL) responds within 300 ns to transient shorts, while the main current-limit amplifier regulates sustained overload at ±15% accuracy. Its dV/dT control loop uses a 220-nA charging current and internal 70-pF capacitor to set output ramp time via external capacitance.
Thermal management combines junction sensing (150°C trip, 10°C hysteresis) with auto-retry timing (145 ms at 5 V after recovery), and overvoltage clamping operates without external components-fixed at 6.1 V for 5-V systems. UVLO and EN functions share the same pin, enabling both enable control and programmable undervoltage thresholds via resistor dividers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 5.5 V - Valid only for 5-V rail applications; exceeds 5.5 V triggers OVP clamping to 6.1 V |
| Overvoltage Clamp | 6.1 V ±0.65 V - Internally fixed clamp prevents downstream damage during input surges |
| Current Limit Range | 2 A to 5 A ±15% - Set by RILIM (10–162 kΩ); includes thermal foldback above 10 W dissipation |
| Output Slew Rate Control | Programmable via CdV/dT (1–1000 nF) - Enables controlled ramp from 0 to 4.9 V in 0.28–0.52 ms (no cap) or up to 5 ms (1 nF) |
| Fault Response Mode | Auto-retry - After thermal shutdown, automatically attempts recovery every 145 ms once TJ drops below 140°C |
| Pass FET RDS(on) | 21–39 mΩ at 25°C - Low conduction loss supports high-efficiency 5-V distribution with <100 mV drop at 2.5 A |
| UVLO Threshold | 4.3 V rising (±0.15 V) - Prevents operation during brownout; 5% hysteresis avoids chatter near threshold |
Pinout & Package
TPS259251DRCR uses a 10-pin VSON (DRC) package, 3.00 mm × 3.00 mm body size, with exposed thermal pad (EP) connected to GND for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: dV/dT | Output ramp rate control | Connects to GND via capacitor to program soft-start slew rate; floating defaults to minimum ramp time |
| 2: EN/UVLO | Enable input / UVLO sense | Dual-function pin: logic-high enables FET; resistor divider sets custom UVLO threshold; toggling clears latch in fault modes |
| 3: VIN | Main power input | Accepts 4.5–5.5 V; withstands 20 V continuously; OVP activates above 6.75 V to clamp OUT |
| 4–5: GND | Power and signal ground | Two dedicated GND pins reduce impedance; EP must be soldered to PCB ground plane for thermal compliance |
| 6–8: OUT | Switched output | Three parallel pins carry load current; combined layout minimizes voltage drop and improves current sharing |
| 9: NC | No connect | Internally unconnected; may be left floating or tied to GND for mechanical stability |
| 10: ILIM | Current limit programming | Sinks 10 µA bias current; RILIM to GND sets IOL per IOL = 0.7 + (3×10⁵)/RILIM (kΩ) A |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30-mΩ Pass MOSFET | Eliminates external FET and gate driver; reduces BOM count and board area in space-constrained 5-V rails |
| Fixed 6.1-V Overvoltage Clamp | Protects downstream 5-V logic without external TVS or Zener; clamps transients within safe margin of 5.5-V max rating |
| Auto-Retry Thermal Shutdown | Enables autonomous recovery from overheating faults (e.g., blocked airflow, sustained overload) without host intervention |
| Programmable dV/dT Ramp Control | Prevents inrush-induced voltage droop on shared 5-V buses and avoids false triggering of downstream UVLOs |
| UL 2367 Recognition (E339631) | Validated for end-equipment safety certification; supports designs requiring regulatory-compliant overcurrent protection |
Applications
| HDD/SSD Power Rail Protection | PCIe Auxiliary Supply Management |
|---|---|
Use Scenario: Protects 5-V VCC power to SATA SSDs during hot-plug insertion and transient load switching. IC Role / Device Role / Timing Role: Acts as intelligent hot-swap controller with programmable inrush control and fast-trip short-circuit response. Use Value: Prevents bus collapse during connector arcing and limits peak fault current to ≤5 A, preserving upstream regulators and connectors. |
Use Scenario: Supplies stable 5-V AUX power to PCIe slots in servers where standby current must be managed and fault isolation is critical. IC Role / Device Role / Timing Role: Provides always-on auxiliary power with UVLO monitoring and auto-retry thermal recovery during fan failure events. Use Value: Ensures PCIe link remains viable during thermal stress; eliminates manual reset requirement after overheating. |
| Set-Top Box 5-V Distribution | Adapter-Powered Consumer Electronics |
Use Scenario: Distributes 5-V from wall adapter to multiple subsystems (tuner, demodulator, UI) with independent fault containment. IC Role / Device Role / Timing Role: Functions as channel-isolated eFuse with adjustable current limit per rail and dV/dT-controlled startup sequencing. Use Value: Avoids single-point failure cascading across modules; enables staggered power-up to limit total inrush. |
Use Scenario: Regulates 5-V input from generic USB-C or barrel-jack adapters into noise-sensitive audio/video circuits. IC Role / Device Role / Timing Role: Serves as front-end protection IC with OVP clamping and precise current limiting to prevent adapter overload. Use Value: Extends adapter lifespan by limiting sustained current to 5 A and clamping surges before they reach LDOs or codecs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS259250DRCR | Latched fault response instead of auto-retry; identical pinout, RDS(on), OVP, and current limit range | Requires manual reset (EN toggle or power cycle) after thermal or overcurrent fault - unsuitable for unattended systems | Select when deterministic fault lockout is required for safety-critical diagnostics or when auto-retry could mask persistent faults |
| TPS25942ARVCR | Higher 12-V rating, 15-V OVP clamp, 4-A fixed current limit, and integrated telemetry (V/I reporting via I²C) | Designed for 12-V industrial rails; lacks dV/dT control but adds digital monitoring - not drop-in compatible | Choose when system requires real-time current telemetry or operates from 9–13.8-V sources; not a functional substitute for 5-V use cases |
Compared with TPS259250DRCR and TPS25942ARVCR, the TPS259251DRCR uniquely balances 5-V system compatibility, autonomous thermal recovery, and analog programmability - making it optimal for consumer and embedded 5-V rails where reliability and zero-touch fault handling are essential.
Availability
TPS259251DRCR is available at Aetrix Electronics and suitable for HDD/SSD drives, PCIe auxiliary supplies, set-top boxes, and adapter-powered consumer electronics requiring stable component supply and long-term production support.
Supply support for TPS259251DRCR 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 and embedded processing solutions, with deep expertise in power management ICs and system-level protection architectures.
The TPS25925x family targets compact, high-reliability 5-V power distribution in storage, computing, and consumer electronics - emphasizing integration, safety certification, and ease of implementation with minimal external components.
FAQ
What is the overvoltage clamp voltage of the TPS259251DRCR?
The TPS259251DRCR features a fixed internal overvoltage clamp of 6.1 V, with a tolerance of ±0.65 V across –40°C to +125°C. This clamp activates when input voltage exceeds 6.75 V and protects downstream 5-V circuitry without requiring external components. The TPS259251DRCR maintains this specification consistently across its operating temperature range and load conditions up to 10 mA.
How does the TPS259251DRCR implement auto-retry thermal shutdown?
The TPS259251DRCR triggers thermal shutdown at 150°C (TSHDN) and initiates an auto-retry cycle once junction temperature falls below 140°C (10°C hysteresis). At 5 V input, the retry delay is 145 ms; at 12 V it is 110 ms. This behavior is intrinsic to the TPS259251DRCR variant and differs from the latched TPS259250DRCR. No external circuitry is needed to enable this function.
Can the TPS259251DRCR be used in 12-V systems?
No - the TPS259251DRCR is specified exclusively for 5-V systems, with recommended input range 4.5–5.5 V. Applying >5.5 V places the device in overvoltage protection mode, clamping output to 6.1 V and dissipating excess power as heat. For 12-V applications, TI specifies the TPS259261DRCR (15-V clamp) or TPS25942ARVCR. Using TPS259251DRCR beyond its rated range risks thermal shutdown or reduced reliability.
What is the purpose of the dV/dT pin on the TPS259251DRCR?
The dV/dT pin on the TPS259251DRCR controls output voltage slew rate during power-on by sinking a 220-nA current into an external capacitor tied to GND. This allows precise adjustment of ramp time from 0.28 ms (no capacitor) to ≥5 ms (1 nF), preventing inrush current spikes and downstream UVLO glitches. The TPS259251DRCR's dV/dT circuit includes internal 70-pF capacitance and 4.85× gain for predictable timing.
How is current limit set on the TPS259251DRCR?
Current limit on the TPS259251DRCR is set by connecting a resistor (RILIM) between the ILIM pin and GND. The relationship is IOL = 0.7 + (3×10⁵)/RILIM (kΩ) A, yielding 2–5 A over RILIM = 45.3–150 kΩ. Accuracy is ±15% over temperature and voltage. The TPS259251DRCR also incorporates fast-trip protection at 160% of the programmed IOL, responding within 300 ns to short circuits.
TPS259251DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- -
- Accuracy:
- ±15%
- Voltage - Input:
- 4.5V ~ 5.5V
- Current - Output:
- 5A
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS259251DRCR FAQ
1.How can I place an order for TPS259251DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS259251DRCR 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 TPS259251DRCR reliable?
The price and inventory of TPS259251DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS259251DRCR is usually 5 days.
3.What payment methods are accepted for TPS259251DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS259251DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS259251DRCR?
TPS259251DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS259251DRCR 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 TPS259251DRCR?
For technical support, including TPS259251DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS259251DRCR requirements.
6.How does Aetrix verify that TPS259251DRCR is sourced from the original manufacturer or authorized distributors?
All TPS259251DRCR 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 TPS259251DRCR meets industry standards.
7.What is the process for return or replacement of TPS259251DRCR?
All TPS259251DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS259251DRCR, 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 TPS259251DRCR part is unused and in its original packaging.
Return procedure for TPS259251DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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