Texas Instruments TPS2041P

Overview

TPS2041P from Texas Instruments is a 500 mA continuous-current, 135 mΩ (at 5 V) N-channel high-side power distribution switch with active-low enable, short-circuit and thermal protection, and overcurrent logic output (OC). It operates from 2.7 V to 5.5 V input, features 2.5-ms typical rise time, undervoltage lockout (~2 V), and 10 µA max standby current. It is used in USB host/port power management where controlled inrush and fault reporting are required.

For engineers reviewing the TPS2041P datasheet, TPS2041P pinout, TPS2041P application, or TPS2041P equivalent, key selection criteria include its active-low enable logic, integrated current limiting at 0.9 A (typical short-circuit trip), SOIC/PDIP package compatibility, thermal shutdown recovery behavior, and OC open-drain signaling for USB controller interfacing.

Technical Context

The TPS2041P integrates an N-channel MOSFET high-side switch with internal charge pump gate drive, enabling full enhancement down to 2.7 V input while maintaining low r_DS(on). Its driver circuit controls slew rate to limit EMI and inrush surges, with rise/fall times specified at 2.5 ms / 4.4 ms (5.5 V, 1 µF load).

Protection architecture combines current-sense FET-based constant-current limiting (0.7–1.1 A trip range), thermal shutdown at ~140°C junction with ~20°C hysteresis, and undervoltage lockout that forces OFF below ~2 V. The OC pin asserts low during overcurrent or overtemperature events and remains latched until fault removal.

Key Specifications

Pinout & Package

TPS2041P is housed in an 8-pin plastic dual-in-line package (PDIP), with 0.3-inch body width and standard through-hole mounting. Pin spacing is 0.1 inch; lead finish is matte tin.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side power switch applications.

Compared with TPS2041D and AP2151WG-7, the TPS2041P offers through-hole manufacturability, UL recognition, and precise OC signaling for USB-compliant fault reporting-making it optimal for certified industrial and computing equipment where reliability and standards compliance are mandatory.

Availability

TPS2041P is available at Aetrix Electronics and suitable for USB host port management, self-powered hub design, hot-plug peripheral docking, industrial I/O protection, and embedded power sequencing requiring stable component supply and long-term lifecycle support.

Supply support for TPS2041P 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 connectivity technologies with over 50 years of innovation in power management ICs.

The TPS2041P belongs to TI's power distribution switch family, designed specifically for USB-compliant hot-plug power control, offering integrated protection, low quiescent current, and industry-standard safety certification.

FAQ

What is the enable logic polarity of the TPS2041P?

The TPS2041P uses active-low enable logic: the power switch turns ON when the EN pin is driven low (≤0.4 V at 2.7–4.5 V input), and turns OFF when EN is high (≥2 V). This matches common USB controller GPIO configurations and simplifies direct interfacing without level-shifting or inverters. The TPS2041P datasheet confirms this behavior across all operating temperatures and input voltages.

Does the TPS2041P provide overcurrent fault reporting, and how is it implemented?

Yes, the TPS2041P provides overcurrent fault reporting via its open-drain OC pin, which pulls low during overcurrent or overtemperature events. The OC output remains asserted until the fault condition is removed, allowing host controllers to detect and respond to faults synchronously. This feature is integral to USB compliance and is validated in the TPS2041P functional block diagram and electrical characteristics table.

Can the TPS2041P operate from a 3.3 V supply, and what is its r_DS(on) at that voltage?

Yes, the TPS2041P operates from 2.7 V to 5.5 V, including 3.3 V nominal rails. At 3.3 V input and 25°C junction temperature, its typical r_DS(on) is 105 mΩ-resulting in ≤52.5 mV dropout at 500 mA. This value increases to 150 mΩ at 125°C, confirmed in the "electrical characteristics" section of the TPS2041P datasheet under VI(IN) = 3.3 V conditions.

What thermal protection behavior does the TPS2041P exhibit during sustained overload?

The TPS2041P incorporates thermal shutdown at approximately 140°C junction temperature, with built-in hysteresis of ~20°C. When tripped, the device cycles ON/OFF autonomously until the fault is cleared or ambient cooling reduces junction temperature below ~120°C. This behavior prevents permanent damage and is documented in the TPS2041P "detailed description" and "thermal sense" sections.

Is the TPS2041P UL-recognized, and what is its file number?

Yes, the TPS2041P is UL-recognized under File No. E169910, as stated in the official Texas Instruments datasheet. This certification validates its suitability for use in end-equipment requiring safety agency approval, including industrial control panels, computing peripherals, and medical auxiliary devices meeting basic insulation requirements.