Texas Instruments TPS2011AD

Overview

TPS2011AD from Texas Instruments is a 50-mΩ N-channel high-side power distribution switch with 0.9-A short-circuit current limit, logic-level active-low enable input, and integrated thermal/short-circuit protection. It operates from 2.7 V to 5.5 V input and delivers controlled 6.1-ms rise time for inrush current limiting in USB-powered peripherals and hot-plug modules.

For engineers reviewing the TPS2011AD datasheet, TPS2011AD pinout, TPS2011AD application, or TPS2011AD equivalent, key selection criteria include its SOIC-8 package, 0.9-A current-limit threshold, 33-mΩ on-resistance at 5 V/25°C, undervoltage lockout (~2 V), and 10 μA standby supply current - all critical for reliable 5-V rail switching in embedded power management.

Technical Context

The TPS2011AD integrates an N-channel MOSFET high-side switch with internal charge pump gate drive, enabling full operation down to 2.7 V while maintaining precise current limiting and thermal shutdown. Its constant-current foldback mode activates when load exceeds 0.9 A (typical at 25°C), holding output current stable while reducing output voltage.

Control logic includes active-low EN input compatible with both 3-V and 5-V logic, undervoltage lockout that disables the switch below ~2 V, and automatic thermal recovery with ~20°C hysteresis. The device lacks a body diode between IN and OUT, preventing reverse current flow during disable.

Key Specifications

Pinout & Package

TPS2011AD is housed in an 8-pin SOIC (D) package with gull-wing leads, RoHS-compliant NiPdAu plating, and moisture sensitivity level 1 (260°C peak reflow). Thermal resistance θJA = 172°C/W enables 0.9-A continuous operation with minimal heatsinking under typical PCB layout conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2011AD, TPS2011APWPR offers identical functionality in a denser package but requires different layout and thermal validation, while TPS2051BDR trades current capacity and efficiency for cost-sensitive, low-power use cases - neither is pin-compatible nor drop-in.

Availability

TPS2011AD is available at Aetrix Electronics and suitable for USB peripheral power switching, hot-plug module protection, and industrial I/O rail control requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for TPS2011AD 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 ICs with decades of reliability validation in industrial and automotive applications.

The TPS201xA family was designed specifically for robust 5-V power distribution in hot-plug and high-capacitance-load scenarios - delivering controlled turn-on, short-circuit resilience, and thermal autonomy without external components.

FAQ

What is the exact short-circuit current limit of the TPS2011AD?

The TPS2011AD has a typical short-circuit output current limit of 0.9 A at 25°C, with a minimum of 0.66 A and maximum of 1.1 A across temperature and process variation. This value is factory-trimmed and specified in the Electrical Characteristics table of the SLVS189C datasheet. The TPS2011AD enters constant-current mode when load exceeds this threshold, maintaining 0.9-A output while reducing output voltage to protect upstream supply and downstream circuitry.

Does the TPS2011AD support 3.3-V logic-level enable inputs?

Yes, the TPS2011AD EN pin accepts 3.3-V logic levels: VIH is specified as ≥2 V for valid high, and VIL is ≤0.5 V for valid low across the full 2.7–5.5-V input range. This ensures compatibility with both 3.3-V and 5-V microcontrollers without level-shifting. When EN = 0 V, the TPS2011AD enables the power switch; when EN = VI(IN), it disables the switch and reduces supply current to ≤10 μA.

What is the maximum continuous output current rating for the TPS2011AD?

The TPS2011AD does not specify a fixed maximum continuous output current - instead, it relies on thermal design and current limiting. Its 0.9-A short-circuit threshold defines the foldback point, but continuous current depends on PCB layout, ambient temperature, and power dissipation. At 25°C ambient with standard SOIC-8 layout, continuous current up to ~0.7 A is sustainable before thermal limiting activates; derating is required above 25°C using θJA = 172°C/W.

Can the TPS2011AD be used with input voltages below 3 V?

Yes, the TPS2011AD operates down to 2.7 V input, with guaranteed functionality across the full 2.7–5.5-V range. At 2.7 V, rise time increases to 8.6 ms and rDS(on) rises slightly due to reduced gate drive margin, but current limiting and thermal protection remain fully functional. Undervoltage lockout disables the switch below ~2 V, ensuring safe operation during brownout conditions.

Is there a body diode between IN and OUT in the TPS2011AD?

No, the TPS2011AD explicitly omits a drain-source back-gate diode. This design prevents reverse current flow from OUT to IN when the switch is disabled - a critical feature for systems with multiple power domains or backup supplies. Unlike P-channel high-side switches or discrete MOSFETs with intrinsic diodes, the TPS2011AD provides true bidirectional blocking in the off state.