Texas Instruments TPS2592AADRCT

Overview

TPS2592AADRCT from Texas Instruments is a 4.5–13.8 V input, 28-mΩ integrated eFuse IC with adjustable 2–3.7 A current limiting (±15% accuracy), fixed 15-V overvoltage clamp, reverse current blocking support via BFET control, and programmable output slew rate. It serves as a robust power-switching protection device in adapter-powered SSDs, auxiliary server supplies, and PCIe card power rails.

For engineers reviewing the TPS2592AADRCT datasheet, TPS2592AADRCT pinout, TPS2592AADRCT application, or TPS2592AADRCT equivalent, key selection considerations include its auto-retry thermal fault response, UL 2367 recognition, 10-pin VSON (3 mm × 3 mm) package, and precise dV/dT-controlled ramp timing for holdup-capacitor-sensitive systems.

Technical Context

The TPS2592AADRCT integrates a 28-mΩ N-channel pass MOSFET with real-time current sensing, fast-trip comparator (160% overload threshold), and internal charge pump gate driver. Its EN/UVLO pin provides dual-function control-enabling/disabling the FET and programming UVLO trip points via external resistor dividers.

It implements three independent protection mechanisms: adjustable current limiting set by R_ILIM, fixed 15-V overvoltage clamping without external components, and thermal shutdown at 160°C with 10°C hysteresis. The BFET pin drives an external back-to-back NFET to block reverse current during input droop or short conditions.

Key Specifications

Pinout & Package

TPS2592AADRCT uses a 10-pin VSON (DRC) package with 3.00 mm × 3.00 mm body size and exposed PowerPAD™ thermal pad for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar eFuse protection applications.

Compared with TPS2592ALDRCT, the TPS2592AADRCT offers automatic recovery from thermal faults-reducing system downtime-but lacks latched security. Versus TPS25942ARVCR, it delivers simpler, lower-cost protection without telemetry overhead or package rework.

Availability

TPS2592AADRCT is available at Aetrix Electronics and suitable for adapter-powered devices, HDD/SSD drives, and server auxiliary supplies requiring stable component supply, long-term lifecycle support, and UL-recognized protection ICs.

Supply support for TPS2592AADRCT 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, precision, and industrial-grade performance.

The TPS2592xx product line is designed specifically for high-density, high-reliability power distribution in computing, storage, and communications infrastructure-delivering integrated protection with minimal external components.

FAQ

What is the recommended R_ILIM value to set a 3-A current limit for the TPS2592AADRCT?

The TPS2592AADRCT achieves a 3-A current limit with an R_ILIM of approximately 64.9 kΩ, based on the linear relationship I_LIMIT = 10 µA × (100 kΩ / R_ILIM). At this setting, the device maintains ±15% accuracy across –40°C to +125°C junction temperature, as verified in the Electrical Characteristics table (I_OL = 3.1 A at R_ILIM = 80.6 kΩ and 3.75 A at R_ILIM = 100 kΩ). Always verify final setting with actual board-level testing under worst-case thermal conditions.

Does the TPS2592AADRCT support reverse current blocking without external components?

No-the TPS2592AADRCT requires an external NFET connected back-to-back with its OUT pin to enable reverse current blocking. The BFET pin provides the gate drive signal for that external FET; it does not integrate a second internal FET. This architecture allows designers to select optimal blocking FET voltage rating and R_DS(on), but mandates two additional components (NFET + gate resistor) versus fully integrated alternatives.

What is the thermal resistance (R_θJA) of the TPS2592AADRCT in its VSON-10 package?

The TPS2592AADRCT in the DRC (VSON-10) package has a junction-to-ambient thermal resistance (R_θJA) of 45.9°C/W under standard JEDEC test conditions. This value assumes a 2-layer PCB with 1-in² 2-oz copper pad connected to the PowerPAD™. Real-world performance improves significantly with enhanced thermal vias and multilayer board designs-TI's layout guidelines recommend ≥6 thermal vias directly under the PowerPAD™ for optimal dissipation.

How does the auto-retry behavior of the TPS2592AADRCT differ from the latched response of the TPS2592ALDRCT?

The TPS2592AADRCT enters auto-retry mode upon thermal shutdown: it remains off until junction temperature falls below 150°C (160°C – 10°C hysteresis), then automatically attempts restart. In contrast, the TPS2592ALDRCT latches off permanently until EN/UVLO is cycled low-then-high or VIN is power-cycled. This makes the TPS2592AADRCT appropriate for transient-overload environments like fan startups, while the AL variant suits fail-safe systems where human verification is required before recovery.

Is the 15-V overvoltage clamp on the TPS2592AADRCT adjustable or fixed?

The 15-V overvoltage clamp on the TPS2592AADRCT is fixed and non-adjustable-no external components are required or supported to modify the clamp level. The datasheet specifies VOVC = 13.8 V (min) to 16.5 V (max) across temperature and load, with typical clamping at 15 V. This internal clamp activates when VIN exceeds ~16.5 V and protects downstream circuitry without relying on external TVS diodes or Zener networks.