Texas Instruments TPS259620DDAT

Overview

TPS259620DDAT from Texas Instruments is a 2.7–19 V, 89-mΩ eFuse IC with accurate current monitoring and fast overvoltage clamping (3.8 V / 5.7 V / 13.8 V pin-selectable), designed for robust input protection in energy meters, UL 60335-1 appliance LPCs, IP network cameras, and set-top boxes. It delivers ±10.4% current limit accuracy across 0.125–2 A, 5-μs clamp response, and operates from –40°C to +125°C.

For engineers reviewing the TPS259620DDAT datasheet, TPS259620DDAT pinout, TPS259620DDAT application, or TPS259620DDAT equivalent, this page provides verified functional specifications, SOIC-8 package layout, real-world use cases in safety-critical appliances and surveillance systems, and validated alternative parts for design continuity and supply resilience.

Technical Context

The TPS259620DDAT implements a precision current-limiting MOSFET switch with integrated gate drive, thermal shutdown, and fast analog overvoltage clamp circuitry. Its OVCSEL pin selects one of three fixed clamp thresholds (3.8 V, 5.7 V, or 13.8 V) without external components, and its ILM pin simultaneously sets current limit via RILM and outputs a proportional 656 µA/A monitor signal.

It features latch-off fault behavior upon overtemperature or overcurrent, active-high EN/UVLO with adjustable undervoltage lockout, dVdt-controlled output slew rate, and immunity to IEC 61000-4-4 electrical fast transients - all within an 8-pin SOIC package with exposed thermal pad.

Key Specifications

Pinout & Package

TPS259620DDAT uses an 8-pin SOIC package (DDA) with exposed thermal pad soldered to PCB ground for thermal performance. Pin functions are validated per TI SLVSET8A datasheet Rev. August 2019.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS259621DDAT and TPS259421RVCT, the TPS259620DDAT uniquely combines latch-off safety behavior, zero-resistor OVCSEL selection, and SOIC-8 manufacturability - making it optimal for cost-sensitive, safety-certified appliance designs where fault persistence must halt power delivery until manual reset.

Availability

TPS259620DDAT is available at Aetrix Electronics and suitable for energy metering, UL 60335-1 appliance control, and IP network camera power applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS259620DDAT 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The TPS2596xx family is engineered as highly integrated eFuses for robust circuit protection in safety-critical AC/DC power supplies and appliance control units - emphasizing latch-off reliability, fast overvoltage response, and simplified current monitoring.

FAQ

What is the overvoltage clamp response time of the TPS259620DDAT?

TPS259620DDAT achieves a typical overvoltage clamp response time of 5 μs when an input overvoltage event exceeds the selected OVCSEL threshold (3.8 V, 5.7 V, or 13.8 V). This value is measured from voltage excursion onset to output clamping activation under test conditions of IOUT = 2 A and TJ = 25°C, ensuring downstream ICs remain within safe operating voltage before damage occurs.

How does the ILM pin function in the TPS259620DDAT?

The ILM pin in TPS259620DDAT serves a dual role: it sets the output current limit via an external resistor to GND (e.g., 453 Ω yields ~2 A), and simultaneously outputs a voltage proportional to load current at 656 µA/A. This enables both precise current limiting and real-time analog monitoring without additional sensing components - a key feature confirmed in TI's SLVSET8A datasheet Section 7.5.

Does the TPS259620DDAT support adjustable undervoltage lockout?

Yes, the TPS259620DDAT supports adjustable undervoltage lockout via its EN/UVLO pin (Pin 3). Applying a resistor divider from IN to GND allows setting a custom UVLO threshold between 1.08 V and 1.22 V, enabling tailored brownout behavior for specific system rails - distinct from its fixed internal UVP threshold of 2.42 V (rising).

What fault response behavior does the TPS259620DDAT implement?

The TPS259620DDAT implements latch-off fault response: upon overcurrent, overvoltage, or thermal shutdown, it disables the internal FET and holds the FLT pin low until the EN/UVLO pin is cycled (driven low then high). This behavior is explicitly documented in TI's Device Comparison Table and distinguishes TPS259620DDAT from auto-retry variants like TPS259621DDAT.

Is the exposed thermal pad on the TPS259620DDAT package required to be connected to ground?

Yes, the exposed thermal pad on the TPS259620DDAT SOIC-8 (DDA) package must be soldered to the PCB ground plane. TI specifies that doing so achieves a junction-to-ambient thermal resistance (R_θJA) of 52.7°C/W; omitting this connection degrades thermal performance to 119.8°C/W - risking thermal shutdown under 2-A continuous load.