Texas Instruments TPS259530DSGT

Overview

TPS259530DSGT from Texas Instruments is a 2.7 V to 18 V, 4-A eFuse IC 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 hot-swap, SSD, and industrial systems against overcurrent, overvoltage, and inrush surges.

For engineers reviewing the TPS259530DSGT datasheet, TPS259530DSGT pinout, TPS259530DSGT application, or TPS259530DSGT equivalent, key selection criteria include its latch-off thermal shutdown behavior, 5.7-V fixed OVC threshold, 4-A adjustable current limit via R_ILM, dV/dt-controlled slew rate, and UL 2367 / IEC 62368-1 safety certification.

Technical Context

The TPS259530DSGT implements a single-channel integrated FET eFuse with internal charge pump driving an N-channel MOSFET. Its protection architecture combines fast analog overvoltage clamping (no external components) and digitally controlled current limiting with real-time load current monitoring via the ILM pin.

It features a dedicated FLT open-drain fault indicator for overvoltage, overcurrent, and thermal events, and uses a resistor divider on EN/UVLO to set custom input undervoltage lockout thresholds. The device operates across –40°C to +125°C and supports output slew rate control via external capacitor on the dVdt pin.

Key Specifications

Pinout & Package

TPS259530DSGT is housed in an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad (GND-connected) for enhanced power dissipation. The package supports reflow soldering and achieves R_θJA = 65.6°C/W under standard JEDEC conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS259530DSGT, TPS259531DSGT offers faster recovery from thermal faults but risks repeated stress during persistent overloads, while TPS259421RGET reduces BOM count in non-clamp designs but shifts overvoltage protection responsibility to external components.

Availability

TPS259530DSGT is available at Aetrix Electronics and suitable for hot-swap, SSD power management, and industrial PLC applications requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for TPS259530DSGT 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 is designed specifically for robust, integrated circuit protection in space-constrained, high-availability systems-delivering eFuse functionality with minimal external components and certified safety compliance.

FAQ

What is the overvoltage clamp threshold and response time of the TPS259530DSGT?

The TPS259530DSGT features a fixed 5.7-V (typical) overvoltage clamp with a 5-µs typical response time when output current exceeds 4 A. This clamping action occurs internally without external components and holds the OUT pin at ≤5.7 V during input surges, protecting downstream 5-V logic. The specification is guaranteed across –40°C to +125°C and independent of R_ILM or dVdt capacitor value.

How do I configure the current limit for the TPS259530DSGT?

The TPS259530DSGT current limit is set using a single resistor (R_ILM) between the ILM pin and GND. With R_ILM = 487 Ω, the device limits output current to 4.17 A (±7.5%). Lower resistance increases current limit; higher resistance decreases it-e.g., 1780 Ω yields ~1.17 A. The ILM pin also provides a 276 µA/A monitor signal for real-time load current measurement.

Does the TPS259530DSGT support adjustable undervoltage lockout?

Yes-the TPS259530DSGT uses its EN/UVLO pin for adjustable undervoltage lockout. A resistor divider from IN to GND sets the enable threshold: when the voltage at EN/UVLO drops below 1.1–1.27 V (rising/falling), the device disables the FET. This allows custom UVLO points-for example, a 100-kΩ/22-kΩ divider on a 12-V rail triggers disable at ~2.7 V input, matching the device's minimum operating voltage.

What fault conditions trigger the FLT pin on the TPS259530DSGT?

The FLT pin on the TPS259530DSGT is asserted low (open-drain) for three fault conditions: overvoltage clamp activation (OUT ≥5.7 V), overcurrent event (I_OUT > ILIMIT + 20% for 250 µs), and thermal shutdown (T_J ≥157°C). FLT remains low until the fault clears and EN is toggled-consistent with its latch-off behavior. An external pull-up resistor (e.g., 10 kΩ to 3.3 V) is required for proper logic-level signaling.

Is the TPS259530DSGT compatible with IEC 62368-1 and UL 2367 safety standards?

Yes-the TPS259530DSGT is certified to IEC 62368-1 and carries UL 2367 recognition (File No. E169910). It passes single-point-failure testing per IEC 62368-1, including ILM pin open/short detection and safe failure modes under overvoltage, overcurrent, and thermal stress. These certifications validate its use in end-equipment requiring formal safety approval, such as digital TVs, industrial controllers, and network infrastructure.