Texas Instruments TPS259827LNRGET

Overview

TPS259827LNRGET from Texas Instruments is a 2.7V–24V, 15A smart eFuse with 2.7mΩ R_ON, ±1.5% accurate current monitoring, adjustable transient fault management, and no overvoltage lockout (OVLO). It functions as an integrated hot-swap protection device in high-reliability power rails, delivering fast-trip response (<400ns), robust short-circuit immunity, and configurable auto-retry or latch-off fault behavior. Used in PCIe risers and server standby rails where precise current limiting and inrush control are critical.

For engineers reviewing the TPS259827LNRGET datasheet, TPS259827LNRGET pinout, TPS259827LNRGET application, or TPS259827LNRGET equivalent, this page delivers verified specifications including current limit accuracy (±8% >5A), dV/dt slew rate control, thermal shutdown (150°C), UL 2367 recognition (E339631), and QFN-24 package dimensions - all confirmed for the exact TPS259827LNRGET variant.

Technical Context

The TPS259827LNRGET implements a precision current-limiting architecture with dual-threshold overcurrent detection: programmable ILIM (2–15A) sets the active current limiter threshold, while ISC = 210% × ILIM defines the fast-trip short-circuit response. Its internal dV/dt controller uses external capacitance on the dVdt pin to linearly regulate output slew rate across 2.7–24V input range, decoupling inrush control from load conditions.

Configurable fault handling includes EN/UVLO pin for undervoltage lockout adjustment, ITIMER for transient blanking, RETRY_DLY and NRETRY pins for timing-controlled auto-retry cycles, and PG for open-drain power-good signaling. The device operates from –15°C to 125°C junction temperature and features integrated overtemperature protection with 10°C hysteresis.

Key Specifications

Pinout & Package

TPS259827LNRGET is housed in a thermally enhanced 4mm × 4mm QFN-24 package (RGE) with two exposed thermal pads (Pad 1 connected to IN, Pad 2 to GND) for optimal heat dissipation and current distribution.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS259827LNRGET, TPS259827ONRGET trades current limiting for faster fault isolation, while TPS259824LNRGET adds OVLO capability at the cost of reduced flexibility in overvoltage-prone environments - both share identical pinout, thermal performance, and current monitor accuracy.

Availability

TPS259827LNRGET is available at Aetrix Electronics and suitable for server standby rail protection, PCIe riser card hot-swap, and industrial PC backplane protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS259827LNRGET 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 and embedded processing technologies, with decades of expertise in power management ICs and industrial-grade reliability.

The TPS25982 family was designed specifically for high-density, high-reliability hot-swap and power-distribution applications in datacenters, networking equipment, and industrial automation - emphasizing precision current control, transient resilience, and safety certification.

FAQ

What is the overvoltage lockout (OVLO) configuration for TPS259827LNRGET?

The TPS259827LNRGET is explicitly configured with no overvoltage lockout (OVLO), as confirmed in TI's Device Comparison Table. This variant omits internal OVLO circuitry, making it suitable for systems where upstream overvoltage protection is already implemented or where OVLO is not required by safety standards. Unlike TPS259822LNRGET (3.7V), TPS259823LNRGET (7.6V), or TPS259824LNRGET (16.9V), the TPS259827LNRGET relies solely on its current-limiting and thermal protection features for fault response.

How is the current limit threshold set on TPS259827LNRGET?

The current limit threshold for TPS259827LNRGET is set using an external resistor (R_ILIM) connected between the ILIM pin (Pin 8) and GND. Per TI's Electrical Characteristics table, R_ILIM values from 100Ω to 1650Ω program ILIM from ~2A to 15A, with ±8% typical accuracy for thresholds above 5A. The relationship is monotonic and documented in Figure 6-12 of the datasheet - no calibration or trimming is needed for production use.

Does TPS259827LNRGET support adjustable output slew rate control?

Yes, TPS259827LNRGET supports fully adjustable output slew rate (dV/dt) control via the dVdt pin (Pin 15). Connecting a capacitor from dVdt to GND linearly reduces the output rise time - for example, 0pF yields ~7.4 V/ms at 24V, while 6800pF reduces it to 0.68 V/ms. This feature enables precise inrush current limiting into large bulk capacitors without affecting steady-state performance, and is validated across the full 2.7–24V input range.

What safety certifications does TPS259827LNRGET hold?

TPS259827LNRGET holds UL 2367 Recognition (File E339631) and IEC 62368 CB Certification. UL recognition requires R_ILIM ≥ 182Ω and validates safe operation under fault conditions including short-circuit, overtemperature, and overvoltage stress. These certifications apply directly to the TPS259827LNRGET variant and reduce end-equipment compliance burden for industrial and telecom applications.

Can TPS259827LNRGET be used in automotive applications?

TPS259827LNRGET is not qualified for automotive applications. Its specified operating junction temperature range is –15°C to 125°C, which falls short of AEC-Q100 Grade 2 (–40°C to 105°C) or Grade 1 (–40°C to 125°C) requirements. Additionally, it lacks automotive-specific qualifications such as PPAP documentation, zero-defect manufacturing traceability, or extended reliability testing. For automotive use, TI offers the TPS25942 series, which is AEC-Q100 qualified.