TPS25972ARPWR

Overview of TPS25972ARPWR Hot Swap Controller

The TPS25972ARPWR from Texas Instruments is a high-efficiency, robust electronic fuse (eFuse) and hot-swap controller IC designed for precise power management and protection in demanding systems. This advanced controller operates from a wide input voltage range of 2.7V to 23V, providing flexible integration into various power rails. It features a programmable current limit from 870 mA to 7.7 A with ±10% accuracy, safeguarding downstream circuits from overloads and short circuits while supporting a continuous output current of up to 7A. Housed in a compact, thermally enhanced QFN-10 package, it is ideal for space-constrained applications requiring reliable inrush current control and fault protection. Key applications for this durable hot-swap controller include server and network equipment, industrial automation, telecom infrastructure, and enterprise storage systems, where it ensures stable power sequencing and enhances system reliability by preventing catastrophic failures during board insertion and removal.

Manufacturer Information

Texas Instruments is a globally recognized leader in the design and manufacturing of semiconductors, with a core expertise in analog integrated circuits and embedded processors. The company drives innovation across a broad portfolio, including power management, signal chain, and microcontroller solutions, serving a wide array of industries from industrial and automotive to personal electronics. TI is committed to high-quality manufacturing standards and operational reliability, ensuring its components meet rigorous performance and consistency requirements for critical electronic designs worldwide.

Key Features

• Provides robust protection with programmable current limiting from 870 mA to 7.7 A and integrated power-fail detection.
• Operates across a wide input voltage range of 2.7V to 23V for versatile power rail compatibility.
• Ensures reliable thermal performance in a compact, surface-mount 10-VQFN-HR (2x2) package.
• Supports stable operation over the full industrial temperature range from -40°C to +125°C.
• Integrates essential protection features to manage inrush current and fault conditions in hot-swap scenarios.

Packaging Details

QFN-10 (Dimensions: 2.00×2.00×0.90 mm), 10-Pin Count, Surface Mount (SMT) Compatible. Supplied in tape and reel for automated assembly, with a factory pack quantity of 3000 units.

Equivalent / Alternative Parts

• TPS25972ARVCR (Texas Instruments) - Key Match: Same functionality in a different package (WQFN-20).
• TPS25971ARPWR (Texas Instruments) - Key Match: Similar hot-swap controller in the same QFN-10 package with adjusted current limit range.

Advantages

• Offers superior accuracy (±10%) in current limiting compared to many basic eFuse solutions, enabling more precise system protection and design margins.
• Combines a wide operating voltage range with a high 7A continuous current rating in a miniature package, providing an excellent power density solution for modern, compact designs.
• Includes integrated power-fail detection, reducing external component count and simplifying system design for monitoring power rail health.

Lifecycle Status & Updates

Status: Active; Update: Stable supply. Refer to the manufacturer's official product page for the latest Product Change Notifications (PCN) or End-of-Life (EOL) announcements.

Application Examples

• Server Blade Power Protection (23V Input)
• Industrial PLC Hot-Swap Modules (7A Current)
• Network Switch Board Insertion
• Enterprise SSD Storage Backplane
• Telecom DC/DC Converter Input

Technical Specifications

• Product Category: Hot Swap Voltage Controllers
• Input Voltage Range: 2.7 V to 23 V
• Programmable Current Limit: 870 mA to 7.7 A
• Continuous Output Current: 7 A
• Operating Junction Temperature: -40°C to +125°C
• Accuracy: ±10%

Pinout and Functionality

• Pin 1: PG - Power-Good Output - Open-drain fault indicator. Connect to MCU GPIO.
• Pin 2: FLT - Fault Indicator - Open-drain output for current limit or thermal fault.
• Pin 3: ILIM - Current Limit Set - Connect resistor to GND to set current limit threshold.
• Pin 4: EN - Enable Input - Logic high to enable device. Connect to system enable.
• Pin 5: VIN - Input Voltage Supply - Connect to the protected power rail (2.7V-23V).
• Pin 6: VOUT - Output Voltage - Connect to the load. Internal FET drain.
• Pin 7: VOUT - Output Voltage - Connect to the load. Internal FET drain.
• Pin 8: PGND - Power Ground - High-current return path for the internal FET.
• Pin 9: AGND - Analog Ground - Signal ground reference.
• Pin 10: PFD - Power-Fail Detect - Monitors input voltage via external divider.

FAQ Section

Q: What is the operating voltage range?
A: 2.7V to 23V input.

Q: What is the maximum output current?
A: 7A continuous operating current.

Q: Is this component RoHS compliant?
A: Yes, see "Details" in RoHS parameter.

Q: What package does it use?
A: 10-pin QFN (2x2 mm).

Q: What is the current limit accuracy?
A: ±10%.

Q: Does it have a power-good signal?
A: Yes, Pin 1 (PG) provides this function.

Q: What is the minimum current limit?
A: Programmable down to 870 mA.