Texas Instruments TPS2041ADR

Overview

TPS2041ADR from Texas Instruments is a single-channel, 80-mΩ high-side N-channel MOSFET power-distribution switch with independent thermal and short-circuit protection, 500 mA continuous current rating, 2.7 V to 5.5 V input range, and active-low enable logic - designed for USB peripheral power management and hot-swap applications in embedded systems.

For engineers reviewing the TPS2041ADR datasheet, TPS2041ADR pinout, TPS2041ADR application, or TPS2041ADR equivalent, key selection considerations include its 500 mA per-channel current limit, 2.5-ms typical rise time, 10 µA standby supply current, undervoltage lockout at ~2 V, and SOIC-8 (D) package compatibility with tape-and-reel delivery.

Technical Context

The TPS2041ADR integrates an internal charge pump enabling gate drive above source voltage for full enhancement of the high-side N-MOSFET down to 2.7 V input, eliminating external components while maintaining controlled 2.5-ms rise time and 4.4-ms fall time. Its current-limit circuitry uses a sense FET-not a shunt resistor-to detect overloads and enter constant-current mode at 0.9 A typical short-circuit threshold.

Thermal protection employs dual-threshold sensing: at ~140°C junction temperature, only the faulted channel shuts down while others remain operational; recovery occurs automatically after ~20°C hysteresis cooling. The OC output is open-drain, active-low, and asserted during both overcurrent and overtemperature events.

Key Specifications

Pinout & Package

TPS2041ADR is housed in an 8-pin SOIC (D) package, surface-mount, tape-and-reel compatible (R suffix denotes reel packaging). Pin 1 is GND; pins 2–3 are IN (common input); pin 4 is EN (active-low enable); pin 5 is OC (open-drain overcurrent flag); pins 6–8 are OUT (power-switch output, internally paralleled).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051ADR, TPS2041ADR offers direct GPIO compatibility without inversion; versus AP2171SG-13, it delivers integrated fault diagnostics and self-protecting thermal behavior essential for robust industrial and medical designs.

Availability

TPS2041ADR is available at Aetrix Electronics and suitable for USB power management, industrial I/O protection, and portable medical device power gating requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS2041ADR 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 technologies, with decades of expertise in high-reliability power IC design.

The TPS204x series was engineered specifically for robust, current-limited power distribution in USB-compliant and hot-swap-capable systems - emphasizing fault resilience, low quiescent current, and seamless integration into compact embedded platforms.

FAQ

What is the maximum continuous output current rating for the TPS2041ADR?

The TPS2041ADR is rated for 500 mA continuous output current per channel under recommended operating conditions (2.7 V to 5.5 V input, ambient temperature 0°C to 85°C). Its current-limit threshold is typically 0.9 A during short-circuit events, and thermal protection activates at ~140°C junction temperature to prevent damage. This rating ensures reliable operation with standard USB peripheral loads and moderate capacitive inrush.

Does the TPS2041ADR require external components for basic operation?

Yes - the TPS2041ADR requires at minimum a 0.1-µF ceramic bypass capacitor between IN and GND, placed close to the device, to stabilize the internal charge pump and suppress noise. An additional 22-µF output capacitor is recommended for heavy capacitive loads to reduce input transients. No external gate resistors, boost capacitors, or current-sense resistors are needed, as all core functions (charge pump, current sensing, thermal protection) are fully integrated within the TPS2041ADR.

How does the OC (overcurrent) pin function on the TPS2041ADR?

The OC pin on the TPS2041ADR is an open-drain, active-low output that asserts (pulls to GND) whenever an overcurrent or overtemperature condition is detected. It sinks up to 10 mA and requires an external pull-up resistor (typically 10 kΩ to VCC or MCU IO voltage) to generate a valid logic-high signal when idle. This pin enables real-time fault detection and interrupt-driven recovery in microcontroller-based systems without polling - a critical feature for responsive USB and industrial power management using the TPS2041ADR.

Is the TPS2041ADR compatible with 3.3 V logic control signals?

Yes - the TPS2041ADR's EN input is CMOS- and TTL-compatible, with a guaranteed low-level threshold of ≤0.4 V (at 2.7–4.5 V input) and high-level threshold of ≥2.0 V. A 3.3 V GPIO can directly drive EN without level shifting: logic low (≤0.4 V) enables the switch, logic high (≥2.0 V) disables it. Input current is ±0.5 µA, minimizing loading on the controller - making the TPS2041ADR ideal for direct interfacing with modern 3.3 V MCUs and FPGAs.

What package type and reel specification does the TPS2041ADR use?

The TPS2041ADR is supplied in an 8-pin SOIC (D) package, RoHS-compliant and lead-free. The "R" suffix explicitly indicates tape-and-reel packaging per manufacturer specification: standard reel quantity is 2,500 units per 12 mm tape width, with EIA-481-compliant carrier tape, cover tape, and embossed pockets. This format supports automated SMT assembly and is verified for compatibility with industry-standard pick-and-place equipment used in high-volume production of boards utilizing the TPS2041ADR.