Texas Instruments TPS259530DSGR

Overview

TPS259530DSGR from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse with 34-mΩ R_ON, 5.7-V fast overvoltage clamp (5 µs response), active-high enable with adjustable UVLO, and integrated current limit/monitor (±7.5% accuracy). It protects power rails in adapter-powered systems and SSDs against overcurrent, overvoltage, and inrush surges.

For engineers reviewing the TPS259530DSGR datasheet, TPS259530DSGR pinout, TPS259530DSGR application, or TPS259530DSGR equivalent, key selection criteria include output voltage clamp threshold (5.7 V typ), latch-off fault response, thermal shutdown at 157°C, adjustable slew rate via dVdt capacitor, and ILM-based current monitoring across 0.5–4 A range.

Technical Context

The TPS259530DSGR implements a single-channel integrated FET hot-swap controller with internal charge pump driving an N-channel MOSFET. Its protection architecture combines fast analog overvoltage clamping (no external components) and digitally latched fault handling upon overcurrent or thermal events.

It features dual-stage current limiting: immediate 250-µs response to >120% ILIMIT and sub-5-µs short-circuit cutoff. The EN/UVLO pin supports resistor-divider–based input undervoltage lockout with 1.1–1.27 V threshold, while FLT provides open-drain fault indication with 12-Ω pull-down resistance.

Key Specifications

Pinout & Package

TPS259530DSGR uses an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad soldered to PCB ground for enhanced heat dissipation (R_θJB = 28.3°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS259530DSGR, TPS259531DSGR offers identical protection thresholds but trades latch-off reliability for auto-retry convenience, while TPS25942ARVCR reduces performance headroom and monitoring capability to lower unit cost-making TPS259530DSGR optimal for designs requiring deterministic fault containment and real-time current visibility.

Availability

TPS259530DSGR is available at Aetrix Electronics and suitable for adapter-powered systems, SSD/HDD power management, and industrial control panels requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for TPS259530DSGR 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 specializing in analog, embedded processing, and power management ICs, with decades of expertise in high-reliability protection solutions.

The TPS2595xx family was designed specifically for robust, space-constrained hot-swap and inrush management in industrial, computing, and consumer electronics-emphasizing fast fault response, integrated monitoring, and safety certification.

FAQ

What is the overvoltage clamp threshold and response time of the TPS259530DSGR?

The TPS259530DSGR has a factory-set overvoltage clamp threshold of 5.7 V (typical), with a response time of 5 µs when output current exceeds 4 A. This clamping action limits the OUT pin voltage to ≤5.7 V during input surges, protecting downstream 5-V logic without external components. The clamp operates independently of enable state and remains active even during shutdown.

How does the TPS259530DSGR implement current limiting and monitoring?

The TPS259530DSGR sets current limit via an external resistor (R_ILM) from the ILM pin to GND-e.g., 487 Ω yields 4.17 A ±7.5%. Simultaneously, the ILM pin outputs a proportional analog voltage (276 µA/A typical) that allows real-time load current measurement using a microcontroller ADC. No external shunt or amplifier is required.

What fault response mode does the TPS259530DSGR use, and how is it reset?

The TPS259530DSGR uses latch-off fault response: upon overcurrent, overtemperature, or UVLO violation, it disables the internal FET and holds OFF until the EN/UVLO pin is cycled (driven low then high). This prevents uncontrolled restart attempts during persistent faults. No external reset pin or command is needed-only enable pin toggling.

Can the TPS259530DSGR be used with input voltages below 3 V?

No-the TPS259530DSGR is specified for 2.7 V minimum input, but its 5.7-V overvoltage clamp and internal circuitry require VIN ≥3.0 V for guaranteed operation per datasheet Section 7.3. At 2.7–2.99 V, UVLO may activate unpredictably, and clamp functionality is not characterized. For sub-3-V rails, consider TPS259520DSGR (3.8-V clamp variant).

What thermal performance can be expected from the TPS259530DSGR in a typical PCB layout?

In a standard 2-layer PCB with 1-in² 2-oz copper GND pour under the exposed thermal pad, the TPS259530DSGR achieves R_θJB = 28.3°C/W. At 4 A and 12 V input, power dissipation is ~544 mW, resulting in ~15.4°C junction-to-board rise. With ambient at 85°C, junction temperature stays below 125°C-well within rated operating range.