Texas Instruments TPS259824ONRGET

Overview

TPS259824ONRGET from Texas Instruments is a 2.7V–24V, 15A smart eFuse with 2.7mΩ R_ON, integrated hot-swap protection, ±1.5% accurate current monitoring, and configurable transient fault management. It serves as a programmable power switch and circuit breaker in high-reliability DC power rails, delivering robust short-circuit response (<400ns), adjustable dV/dt control, and 16.9V overvoltage lockout for server standby rails and PCIe add-on cards.

For engineers reviewing the TPS259824ONRGET datasheet, TPS259824ONRGET pinout, TPS259824ONRGET application, or TPS259824ONRGET equivalent, key selection criteria include its fixed 16.9V OVLO threshold, circuit-breaker overcurrent response mode, thermal shutdown at 150°C, and QFN-24 (4mm × 4mm) package compatibility with high-current PCB layouts requiring low I²R loss and remote fault recovery.

Technical Context

The TPS259824ONRGET implements a precision current-limiting architecture with dual-stage fault detection: a user-configurable blanking timer (via ITIMER pin) distinguishes load transients from true faults, while fast-trip logic triggers within 400ns when output current exceeds 210% of ILIM. Its internal FET features ultra-low 2.7mΩ on-resistance at 25°C, enabling <30mV drop at 10A and minimizing thermal rise in dense server modules.

Configuration is fully analog: R_ILIM sets current limit (2A–15A), C_{RETRY_DLY} and C_NRETRY define auto-retry behavior, and C_dVdt controls output slew rate. The device supports latch-off or finite/indefinite retry modes, with PG output providing open-drain power-good signaling synchronized to output voltage stabilization.

Key Specifications

Pinout & Package

TPS259824ONRGET is housed in a thermally enhanced 24-pin QFN package (RGE), 4.0mm × 4.0mm, 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 eFuse applications.

Compared with TPS259824LNRGET and TPS259421ARVCR, the TPS259824ONRGET provides superior fault discrimination via programmable blanking, higher current capacity (15A vs 12A), tighter current monitor accuracy (±1.5% vs ±3%), and broader OVLO headroom (16.9V vs 12V), making it optimal for high-availability infrastructure.

Availability

TPS259824ONRGET is available at Aetrix Electronics and suitable for server standby rails, PCIe riser cards, and industrial PC power distribution requiring stable component supply, long-term lifecycle support, and full compliance documentation.

Supply support for TPS259824ONRGET 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-current hot-swap and system-level power protection in datacenter, networking, and industrial equipment-emphasizing configurability, fault resilience, and safety certification.

FAQ

What is the overvoltage lockout threshold for TPS259824ONRGET?

The TPS259824ONRGET has a fixed overvoltage lockout (OVLO) threshold of 16.9V (rising), with hysteresis down to 16.4V (falling). This value is factory-trimmed and does not require external components. It is distinct from other variants in the TPS25982 family (e.g., TPS259822ONRGET uses 3.7V OVLO). The 16.9V threshold protects 12V and 15V downstream circuits from input surges while allowing normal operation across the full 2.7V–24V input range.

How does TPS259824ONRGET differ from TPS259824LNRGET?

The TPS259824ONRGET and TPS259824LNRGET share identical package, OVLO (16.9V), and pinout, but differ in overcurrent response mode: TPS259824ONRGET operates as a circuit breaker (latching or auto-retry), while TPS259824LNRGET functions as an active current limiter. This makes the ON variant better for fault isolation in mission-critical rails, whereas the LN variant suits applications needing uninterrupted current delivery during temporary overloads.

Can TPS259824ONRGET be used in 24V industrial applications?

Yes, TPS259824ONRGET is fully rated for 24V operation with 30V absolute maximum input voltage. Its 2.7mΩ R_ON, –15°C to 125°C junction temperature range, and robust short-circuit immunity (validated across 1 million cycles) make it suitable for demanding 24V industrial power distribution. Thermal design must account for up to 540mW conduction loss at 15A, supported by the dual thermal-pad QFN package.

What is the accuracy of the current monitor (IMON) on TPS259824ONRGET?

The TPS259824ONRGET provides ±1.5% typical accuracy for the IMON output at 25°C when output current exceeds 3A. Gain is 246µA/A nominal, with variation across temperature and process corners bounded by ±3% (min/max). This level of precision enables reliable load telemetry for predictive maintenance and system-level power budgeting without external amplification.

Does TPS259824ONRGET support automatic fault recovery?

Yes, TPS259824ONRGET supports configurable auto-retry after overcurrent or thermal shutdown. Using capacitors on NRETRY and RETRY_DLY pins, designers can set finite retry counts (e.g., 3 attempts) or indefinite retries, plus delay intervals between attempts. Alternatively, connecting NRETRY to GND enables infinite retries, while tying RETRY_DLY to GND forces latch-off behavior-no recovery until EN is cycled.