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Texas Instruments TPS25974ARPWR
- Part No.:
- TPS25974ARPWR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 10-VFQFN
- Datasheet:
-
TPS25974ARPWR.pdf
- Description:
- IC ELECTRONIC FUSE 10% 10VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,340
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Product details
Overview
TPS25974ARPWR from Texas Instruments is a 2.7V–23V, 7A, 9.8mΩ eFuse IC with circuit-breaker overcurrent protection, adjustable transient blanking timer (ITIMER), ±8% load current monitor accuracy, and adjustable overvoltage lockout (OVLO) response in 1.2μs. It operates across –40°C to +125°C and is used in server power rails and enterprise storage for robust input surge and short-circuit defense.
For engineers reviewing the TPS25974ARPWR datasheet, TPS25974ARPWR pinout, TPS25974ARPWR application, or TPS25974ARPWR equivalent, key selection criteria include its circuit-breaker mode (vs active limit), OVLO-only overvoltage response, PG/PGTH power-good signaling, dVdt slew control, and 10-pin HotRod™ QFN package compatibility with high-density PCB layouts.
Technical Context
The TPS25974ARPWR implements a precision analog current-limit threshold set by an external resistor on ILM, with circuit-breaker behavior triggering full output disable upon sustained overcurrent exceeding ILIM +30% for ≥2µs. Its OVLO function uses a resistor divider on Pin 2 to define a 1.2V reference-based threshold, enabling fast 1.2µs shutdown without clamping.
It integrates dual digital outputs: open-drain PG (power-good) with user-adjustable threshold via PGTH pin, and fault indication logic tied to internal protection events. Thermal shutdown activates at 154°C with 10°C hysteresis, and all protections support auto-retry recovery after fault clearance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 23V - supports wide-input industrial and computing rails; 28V absolute max prevents damage during transients. |
| Continuous Current Rating | 7A - maximum steady-state load current before thermal derating; validated at TJ ≤ 125°C. |
| RON | 9.8mΩ (typ.) - low conduction loss enables <100mW dissipation at 7A, reducing thermal stress in compact layouts. |
| Overcurrent Response | Circuit-breaker mode - latches off output until reset; distinct from TPS25970x's active current limit. |
| OVLO Response Time | 1.2µs (typ.) - ultrafast cutoff for input overvoltage events, minimizing downstream component stress. |
| Current Monitor Accuracy | ±8% (max) - enables reliable real-time load monitoring for system health diagnostics and telemetry. |
| Operating Temperature | –40°C to +125°C - qualified for extended-temperature industrial and enterprise storage environments. |
Pinout & Package
TPS25974ARPWR uses a 10-pin HotRod™ QFN package (2.0mm × 2.0mm, 0.45mm pitch) with exposed thermal pad for enhanced power dissipation. The package supports automated optical inspection and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 5) | Power Input | High-side switch source node; accepts 2.7V–23V supply with 28V abs max rating. |
| OUT (Pin 6) | Power Output | Switched output rail; voltage follows IN when enabled, clamped or cut off during faults. |
| EN/UVLO (Pin 1) | Enable & UVLO Input | Active-high enable; resistor divider sets undervoltage lockout threshold (1.2V ref). |
| OVLO (Pin 2) | Overvoltage Lockout Input | Resistor divider sets OVLO threshold (1.2V ref); triggers 1.2µs shutdown on overvoltage. |
| PG (Pin 3) | Power-Good Output | Open-drain indicator asserted high when OUT is stable and PGTH threshold is exceeded. |
| PGTH (Pin 4) | PG Threshold Input | Analog input setting power-good activation level; referenced to internal 1.2V comparator. |
| dVdt (Pin 7) | Slew Rate Control | Capacitor-to-GND sets output turn-on slew rate; open for fastest rise time. |
| GND (Pin 8) | Ground Reference | Common return for all analog and power circuits; must connect to system ground plane. |
| ILM (Pin 9) | Current Limit & Monitor | Resistor-to-GND sets ILIM (0.87A–7.7A); pin voltage provides analog IOUT monitor signal. |
| ITIMER (Pin 10) | Transient Blanking Timer | Capacitor-to-GND sets blanking interval allowing temporary >ILIM peaks before circuit-breaker action. |
Key Features
| Feature | Design Value |
|---|---|
| Circuit-Breaker Overcurrent Protection | Full output disable on sustained overload (>ILIM+30% for ≥2µs), preventing thermal runaway in fault conditions. |
| Adjustable Power-Good Signaling | PG output asserts only when VOUT exceeds user-defined PGTH threshold, enabling precise rail sequencing control. |
| Configurable Transient Blanking | ITIMER capacitor allows controlled tolerance of brief current surges (e.g., capacitor charging), avoiding nuisance trips. |
| Accurate Analog Load Monitoring | ILM pin delivers ±8% accurate current-sense voltage (105.5 µA/A typical gain), supporting closed-loop telemetry. |
| Fast OVLO Response | 1.2µs overvoltage lockout ensures sub-microsecond reaction to input surges, protecting downstream ICs. |
Applications
| Server Power Distribution | Enterprise Storage Modules |
|---|---|
Use Scenario: Protecting 12V intermediate bus rails feeding CPU VRMs and PCIe add-in cards in rack-mounted servers. IC Role / Device Role / Timing Role: High-side eFuse providing circuit-breaker protection, inrush control via dVdt, and PG signaling for BIOS power sequencing. Use Value: Prevents single-point failure propagation during hot-swap events or transient overloads, improving system uptime and serviceability. | Use Scenario: Safeguarding backplane power feeds to RAID controllers, HBAs, and NVMe SSDs in enterprise storage enclosures. IC Role / Device Role / Timing Role: Fault-isolating switch with adjustable ILIM and ITIMER to accommodate varying drive startup currents and surge profiles. Use Value: Enables selective power cycling of failed modules without disrupting adjacent storage lanes or host connectivity. |
| Patient Monitoring Systems | Industrial Point-of-Sale Terminals |
Use Scenario: Securing isolated 5V/3.3V rails powering sensor interfaces and display drivers in medical-grade patient monitors. IC Role / Device Role / Timing Role: Safety-critical overcurrent and overvoltage protector with UL 2367 recognition and IEC 62368-1 CB certification. Use Value: Meets regulatory safety requirements while delivering precise current limiting and fault logging capability for audit trails. | Use Scenario: Managing power to barcode scanners, receipt printers, and touch displays in retail POS terminals subject to frequent cable disconnects and ESD events. IC Role / Device Role / Timing Role: Robust front-end protector with fast-trip (550ns) short-circuit response and ±8% current monitoring for usage analytics. Use Value: Reduces field failures caused by accidental shorts or connector arcing, lowering warranty claims and maintenance costs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar eFuse applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25970ARPWR | Active current limit mode (not circuit-breaker); no PG/PGTH pins; FLT-only fault reporting. | Preferred where constant-current foldback is required instead of latch-off behavior; unsuitable for PG-driven sequencing. | Select when continuous current regulation under overload is needed, not full shutdown. |
| TPS25974LRPW | Latch-off (non-auto-retry) overcurrent response; identical OVLO, PG/PGTH, and pinout. | Used where permanent fault isolation is mandated (e.g., safety-critical subsystems), requiring manual reset. | Choose for fail-safe systems needing irreversible trip until operator intervention. |
Compared with TPS25974ARPWR, TPS25970ARPWR offers active current limiting but lacks power-good signaling, while TPS25974LRPW provides identical protection features but with latch-off instead of auto-retry-making TPS25974ARPWR optimal for self-recovering, sequenced power systems.
Availability
TPS25974ARPWR is available at Aetrix Electronics and suitable for server motherboard designs, enterprise storage subsystems, and medical monitoring equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPS25974ARPWR 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 TPS2597xx family was designed specifically for high-density, high-reliability power distribution in computing and storage infrastructure-emphasizing fast fault response, accurate current monitoring, and minimal board space consumption.
FAQ
What protection modes does the TPS25974ARPWR support?
The TPS25974ARPWR supports circuit-breaker overcurrent protection (not active current limit), adjustable overvoltage lockout (OVLO) with 1.2µs response, fast-trip short-circuit detection (550ns), thermal shutdown at 154°C, and programmable undervoltage lockout (UVLO). It does not support overvoltage clamping (OVC), which is exclusive to TPS25972x variants.
How is the current limit threshold set on the TPS25974ARPWR?
The current limit threshold (ILIM) on the TPS25974ARPWR is set by an external resistor (RILM) connected between the ILM pin and GND. RILM values from 715Ω to 6.65kΩ configure ILIM from 0.87A to 7.7A. The ILM pin also serves as an analog current monitor output with ±8% accuracy and 105.5 µA/A typical gain.
Does the TPS25974ARPWR provide power-good signaling?
Yes, the TPS25974ARPWR provides open-drain power-good (PG) signaling via Pin 3. PG asserts high when the output is fully enabled and the voltage at the PGTH pin exceeds its rising threshold (1.2V typ.). PGTH is configured using an external resistor divider, enabling precise rail validation before system boot.
What is the purpose of the ITIMER pin on the TPS25974ARPWR?
The ITIMER pin on the TPS25974ARPWR sets the transient overcurrent blanking interval using an external capacitor. During this interval, output current may exceed ILIM (up to 2× ILIM) without triggering circuit-breaker action-accommodating benign inrush or burst loads while maintaining protection against sustained faults.
Is the TPS25974ARPWR RoHS-compliant and certified for safety standards?
Yes, the TPS25974ARPWR is RoHS-compliant and carries UL 2367 recognition (File No. E339631) and IEC 62368-1 CB certification. These certifications validate its suitability for safety-critical end equipment including medical devices, enterprise servers, and industrial point-of-sale systems.
TPS25974ARPWR 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)
TPS25974ARPWR FAQ
1.How can I place an order for TPS25974ARPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS25974ARPWR 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 TPS25974ARPWR reliable?
The price and inventory of TPS25974ARPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS25974ARPWR is usually 5 days.
3.What payment methods are accepted for TPS25974ARPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS25974ARPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS25974ARPWR?
TPS25974ARPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS25974ARPWR 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 TPS25974ARPWR?
For technical support, including TPS25974ARPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS25974ARPWR requirements.
6.How does Aetrix verify that TPS25974ARPWR is sourced from the original manufacturer or authorized distributors?
All TPS25974ARPWR 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 TPS25974ARPWR meets industry standards.
7.What is the process for return or replacement of TPS25974ARPWR?
All TPS25974ARPWR units undergo pre-shipment inspection (PSI). If there is an issue with TPS25974ARPWR, 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 TPS25974ARPWR part is unused and in its original packaging.
Return procedure for TPS25974ARPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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