Texas Instruments TPS259261DRCR

Overview

TPS259261DRCR from Texas Instruments is a 12-V eFuse protection switch with integrated 30-mΩ pass MOSFET, fixed 15-V over-voltage clamp, adjustable 2–5-A current limit (±15% accuracy), programmable dV/dT ramp control, and auto-retry thermal shutdown. It safeguards downstream loads in auxiliary 12-V power rails against overcurrent, overvoltage, inrush, and thermal faults.

For engineers reviewing the TPS259261DRCR datasheet, TPS259261DRCR pinout, TPS259261DRCR application, or TPS259261DRCR equivalent, key selection criteria include its 15-V OVP clamp for 12-V systems, auto-retry fault response versus latched alternatives, VSON-10 package thermal performance (R_θJA = 45.9°C/W), and ILIM resistor programming interface.

Technical Context

The TPS259261DRCR implements a hot-swap controller architecture with dual-stage current limiting: a fast-trip comparator (160% of I_OL) responds in 300 ns to short-circuit transients, while the main current-limit amplifier regulates sustained overload at ±15% accuracy. Its UVLO threshold is fixed at 4.3 V with 5% hysteresis.

OVP clamping is achieved via internal circuitry without external components, holding V_OUT ≤15 V during input surges. The dV/dT pin uses a 220-nA charging current and 70-pF internal capacitance to generate programmable output slew rates (e.g., 0.4 ms with 1 nF), enabling controlled power-up sequencing.

Key Specifications

Pinout & Package

VSON-10 (DRC) package with exposed thermal pad; 3.00 mm × 3.00 mm body size; RoHS-compliant, moisture-sensitive level 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS259260DRCR, the TPS259261DRCR enables automatic recovery from thermal faults-critical for unattended systems-while matching all protection thresholds and layout compatibility. Against TPS259421LWQDRCR, it trades voltage/current headroom and AEC-Q100 compliance for lower cost and smaller footprint in standard 12-V applications.

Availability

TPS259261DRCR is available at Aetrix Electronics and suitable for HDD/SSD drives, server auxiliary supplies, PCIe card power management, and adapter-powered devices requiring stable component supply and long-term production support.

Supply support for TPS259261DRCR 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 emphasis on power management, signal chain, and connectivity technologies.

The TPS2592xx product line delivers integrated eFuse protection for 5-V and 12-V systems, targeting hot-swap, inrush control, and fault-isolation requirements in computing, storage, and telecom infrastructure.

FAQ

What is the over-voltage clamp voltage of the TPS259261DRCR?

The TPS259261DRCR features a fixed 15-V over-voltage clamp. When input voltage exceeds safe levels, the device actively limits V_OUT to ≤15 V without external components-protecting downstream 12-V logic and power stages. This value is specified at 13.8–16.5 V across temperature and load conditions per the datasheet's VOVC parameter.

How does the TPS259261DRCR differ from the TPS259260DRCR?

The TPS259261DRCR and TPS259260DRCR share identical electrical specifications-including 15-V OVP, 30-mΩ R_DS(on), and 2–5-A adjustable current limit-but differ in fault response: TPS259261DRCR uses auto-retry thermal shutdown (145-ms retry delay), while TPS259260DRCR latches off until EN is toggled or power is cycled.

Can the TPS259261DRCR be used in 5-V systems?

No-the TPS259261DRCR is specifically designed for 12-V systems and features a 15-V OVP clamp. For 5-V applications, TI specifies the TPS25925x family (e.g., TPS259251DRCR) with a 6.1-V clamp. Using TPS259261DRCR in 5-V rails risks improper UVLO operation and violates recommended operating conditions.

What is the purpose of the dV/dT pin on the TPS259261DRCR?

The dV/dT pin on the TPS259261DRCR controls output voltage slew rate during power-on. Connecting a capacitor (1–1000 nF) between dV/dT and GND sets the ramp time-for example, 1 nF yields ~0.4 ms for 0→11.7 V. This prevents inrush current spikes and contact arcing in hot-swap applications, directly supporting PCIe and SATA power sequencing requirements.

Does the TPS259261DRCR require external components for basic operation?

Yes-basic operation requires only two external components: a resistor from ILIM to GND to set current limit (e.g., 100 kΩ for ~3.75 A), and a ceramic bypass capacitor from VIN to GND (≥0.1 µF). The dV/dT capacitor is optional but recommended for controlled ramping; OVP, UVLO, and thermal shutdown require no external parts.