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Texas Instruments TPS25970LRPWR
- Part No.:
- TPS25970LRPWR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 10-VFQFN
- Datasheet:
-
TPS25970LRPWR.pdf
- Description:
- IC ELECTRONIC FUSE 10% 10VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:20,663
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Product details
Overview
TPS25970LRPWR from Texas Instruments is a latch-off eFuse IC providing overvoltage, overcurrent, and thermal protection for 2.7V–23V power rails with 7A continuous current capability, 9.8mΩ typical RON, ±8% load current monitoring accuracy, and 550ns short-circuit response-used in server motherboard power distribution and enterprise storage RAID controllers.
For engineers reviewing the TPS25970LRPWR datasheet, TPS25970LRPWR pinout, TPS25970LRPWR application, or TPS25970LRPWR equivalent, key selection considerations include its latch-off fault response mode, adjustable current limit (0.87A–7.7A), transient overcurrent blanking via ITIMER capacitor, and QFN 2mm × 2mm HotRod™ package with thermal performance optimized for high-density PCBs.
Technical Context
The TPS25970LRPWR implements a latch-off overcurrent response-unlike auto-retry variants-making it suitable for systems requiring definitive shutdown on fault detection. Its integrated FET delivers low conduction loss (9.8mΩ typ. at VIN > 4V) and supports precise analog current monitoring via the ILM pin with ±8% full-scale accuracy.
Protection logic includes fast-trip short-circuit detection (550ns), adjustable overvoltage lockout (OVLO) with 1.2μs response, and configurable slew rate control (dVdt pin). Thermal shutdown activates at 154°C with 10°C hysteresis, and undervoltage lockout (UVLO) is set via resistor divider on EN/UVLO pin (1.2V nominal threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 23V - supports wide-range DC power rails including 3.3V, 5V, 12V, and 24V industrial systems |
| Continuous Current Rating | 7A - enables robust power delivery to high-current loads like SSDs and FPGA power domains |
| RON (typ.) | 9.8mΩ - minimizes power loss (≤0.48W at 7A) and thermal rise in compact layouts |
| Current Limit Accuracy | ±10% for ILIM > 1.74A - ensures predictable trip thresholds across voltage/temperature for reliable system-level fault margining |
| Short-Circuit Response | 550ns - prevents catastrophic failure during hard shorts by cutting off output before energy dissipation damages downstream components |
| Fault Response Mode | Latch-off - requires manual reset after fault, eliminating uncontrolled cycling in persistent fault conditions |
| Package | QFN 2mm × 2mm, 10-pin HotRod™ - provides low-inductance power paths and enhanced thermal dissipation (RθJA = 49.7°C/W) |
Pinout & Package
TPS25970LRPWR uses a 10-pin QFN (RPW) package with exposed thermal pad, measuring 2.00mm × 2.00mm and 0.45mm pitch. The HotRod™ construction reduces parasitic inductance for faster switching and improved EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | High-side input terminal accepting 2.7V–23V supply; rated to 28V absolute maximum |
| OUT | Power Output | Switched output delivering protected power to load; clamped or shut down during OV/OC events |
| EN/UVLO | Enable / UVLO Input | Active-high enable with resistor-divider programmable undervoltage lockout (1.2V nominal threshold) |
| OVLO | Overvoltage Lockout Input | Resistor-divider input setting adjustable OVLO threshold (1.2V reference); also functions as active-low enable |
| FLT | Fault Indicator Output | Open-drain active-low signal pulled low during overcurrent, overvoltage, or thermal fault; latches until reset |
| GND | Ground Reference | System ground return for all internal circuits and external components; must be low-impedance connection |
| dVdt | Slew Rate Control | Capacitor-to-ground sets output turn-on slew rate; floating = fastest rise (up to 34.2 V/ms at 23V) |
| ILM | Current Limit & Monitor | Resistor-to-ground sets current limit (0.87A–7.7A); pin voltage provides analog current monitor (±8% accuracy) |
| ITIMER | Transient Blanking Timer | Capacitor-to-ground sets blanking interval allowing temporary overcurrent (up to 2×ILIM) without false triggering |
| PG / DNC | Power-Good / Do Not Connect | No-connect for TPS25970x variants; unused pin-must be left floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Latch-off fault response | Ensures permanent shutdown on overcurrent/overvoltage/thermal faults-prevents uncontrolled re-attempts in hazardous or safety-critical conditions |
| Adjustable transient overcurrent blanking | ITIMER capacitor allows controlled peak currents up to 2×ILIM during startup or load transients without triggering protection |
| ±8% accurate analog current monitor | ILM pin provides real-time load current feedback for telemetry, diagnostics, and predictive maintenance without external sense resistors |
| 1.2μs overvoltage lockout response | Fast OVLO reaction protects downstream ICs (e.g., FPGAs, ASICs) from voltage surges before damage occurs |
| HotRod™ QFN thermal performance | 49.7°C/W junction-to-ambient rating enables 7A operation in space-constrained designs without forced air or heatsinks |
Applications
| Server Power Distribution | Enterprise Storage RAID Controllers |
|---|---|
Use Scenario: Protecting 12V power rails feeding multiple NVMe SSDs and PCIe switches on a rack-mount server motherboard. IC Role / Device Role / Timing Role: High-side eFuse providing overcurrent and overvoltage protection with latch-off behavior to prevent cascading failures during hot-swap or surge events. Use Value: Eliminates need for discrete MOSFET + controller solutions while enabling precise current limiting (±10% accuracy above 1.74A) and real-time load monitoring via ILM pin. | Use Scenario: Securing auxiliary 5V/3.3V rails powering RAID controller ASICs and cache memory in enterprise HBA/SAN modules. IC Role / Device Role / Timing Role: Fault-isolating power switch with 550ns short-circuit response and thermal shutdown (154°C) to safeguard mission-critical storage logic. Use Value: Reduces BOM count and board area versus discrete protection schemes while supporting adjustable dV/dt control to manage inrush into large capacitive loads. |
| Patient Monitoring Systems | Industrial Point-of-Sale Terminals |
Use Scenario: Isolating isolated 5V medical-grade power domains supplying ADCs, sensors, and display drivers in Class II patient-connected devices. IC Role / Device Role / Timing Role: Safety-compliant eFuse with UL 2367 recognition (File E339631) and IEC 62368-1 CB certification for secondary-side overcurrent protection. Use Value: Meets regulatory requirements for medical equipment while providing ±8% current monitoring for battery life estimation and fault logging. | Use Scenario: Protecting 12V/24V input rails in retail POS terminals subject to frequent plug-in/out cycles and ESD exposure. IC Role / Device Role / Timing Role: Robust front-end protection IC with ±2000V HBM ESD rating and latch-off response to prevent brownouts during connector arcing. Use Value: Enables field-replaceable power modules without redesign; dVdt-controlled soft-start avoids voltage droop affecting touchscreen responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25970ARPWR | Auto-retry fault response instead of latch-off; identical pinout, RON, and protection features | Suitable where automatic recovery after transient faults is acceptable (e.g., non-safety-critical peripherals) | Select TPS25970ARPWR if system firmware can safely handle repeated fault events; choose TPS25970LRPWR for definitive shutdown in safety- or reliability-critical paths. |
| TPS25974LRPWR | Circuit-breaker (not active current limit) overcurrent response; same latch-off behavior and package | Better suited for applications requiring complete disconnection during overload (e.g., battery charging inputs) | Choose TPS25974LRPWR when load isolation-not regulated current delivery-is the primary requirement; retain TPS25970LRPWR for active current limiting with analog monitoring. |
Compared with TPS25970ARPWR and TPS25974LRPWR, the TPS25970LRPWR uniquely combines latch-off behavior with active current limiting and high-accuracy analog monitoring-making it optimal for systems demanding both fault containment and real-time power telemetry.
Availability
TPS25970LRPWR is available at Aetrix Electronics and suitable for server motherboard power distribution, enterprise storage RAID controllers, and patient monitoring systems requiring stable component supply and long-term production continuity.
Supply support for TPS25970LRPWR 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 for industrial, automotive, and computing markets.
The TPS2597xx family was designed specifically for high-reliability, high-density power rail protection in datacenter, storage, and medical equipment-emphasizing precision current monitoring, fast fault response, and thermally efficient packaging.
FAQ
What is the fault response behavior of the TPS25970LRPWR?
The TPS25970LRPWR uses a latch-off fault response: upon detecting overcurrent, overvoltage, or overtemperature, it shuts down permanently and holds the FLT pin low until the EN/UVLO pin is cycled (disabled then re-enabled). This differs from auto-retry variants like TPS25970ARPWR and ensures no uncontrolled re-engagement in persistent fault conditions-critical for safety and system stability.
How is the current limit threshold set on the TPS25970LRPWR?
The TPS25970LRPWR current limit threshold (ILIM) is set by an external resistor (RILM) connected between the ILM pin and GND. With RILM = 715Ω, ILIM = 7.67A (typ.); with RILM = 6.65kΩ, ILIM = 0.87A (typ.). The relationship is inverse and linear across 0.87A–7.7A, and accuracy is ±10% for thresholds above 1.74A-enabling precise, application-tailored protection.
Does the TPS25970LRPWR provide analog current monitoring?
Yes-the TPS25970LRPWR's ILM pin serves dual function: setting current limit and providing an analog output proportional to load current (IMON = 105.5µA/A typ.). This monitor output has ±8% accuracy across 1A–7.7A, enabling real-time telemetry without external sense resistors or amplifiers-reducing BOM cost and board area while supporting diagnostics and power budgeting in the TPS25970LRPWR design.
What is the purpose of the ITIMER pin on the TPS25970LRPWR?
The ITIMER pin on the TPS25970LRPWR accepts an external capacitor to set a transient overcurrent blanking interval. During this window, output current may exceed the programmed ILIM (up to 2×ILIM) without triggering fault shutdown-allowing safe handling of inrush, motor startup, or burst-mode loads. The blanking time scales with capacitance; open circuit yields fastest response (550ns short-circuit trip), while 1.3nF extends blanking to ~1ms.
Is the TPS25970LRPWR certified for safety standards?
Yes-the TPS25970LRPWR carries UL 2367 recognition (File E339631) and IEC 62368-1 CB certification. These approvals validate its suitability in end-equipment requiring compliance with international safety standards-including medical devices (IEC 60601-1 collateral standards), industrial controls, and IT equipment-ensuring robust insulation, fault containment, and thermal safety under abnormal operating conditions.
TPS25970LRPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Electronic Fuse
- Sensing Method:
- -
- Accuracy:
- ±10%
- Voltage - Input:
- 2.7V ~ 23V
- Current - Output:
- 7A
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VQFN-HR (2x2)
TPS25970LRPWR FAQ
1.How can I place an order for TPS25970LRPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS25970LRPWR 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 TPS25970LRPWR reliable?
The price and inventory of TPS25970LRPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS25970LRPWR is usually 5 days.
3.What payment methods are accepted for TPS25970LRPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS25970LRPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS25970LRPWR?
TPS25970LRPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS25970LRPWR 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 TPS25970LRPWR?
For technical support, including TPS25970LRPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS25970LRPWR requirements.
6.How does Aetrix verify that TPS25970LRPWR is sourced from the original manufacturer or authorized distributors?
All TPS25970LRPWR 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 TPS25970LRPWR meets industry standards.
7.What is the process for return or replacement of TPS25970LRPWR?
All TPS25970LRPWR units undergo pre-shipment inspection (PSI). If there is an issue with TPS25970LRPWR, 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 TPS25970LRPWR part is unused and in its original packaging.
Return procedure for TPS25970LRPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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