Texas Instruments TPS2015P

Overview

TPS2015P from Texas Instruments is a high-side, n-channel MOSFET power distribution switch designed for USB self-powered and bus-powered hub applications. It delivers 1 A continuous load current (0 °C to 125 °C), features 95 mΩ typical on-resistance, integrated overcurrent protection with ~10 µs trip time, fault reporting via open-drain OC pin, and controlled rise/fall times for inrush limiting - enabling compliant 5-V power switching at USB output ports.

For engineers reviewing the TPS2015P datasheet, TPS2015P pinout, TPS2015P application, or TPS2015P equivalent, key selection criteria include its 1-A continuous rating, thermal shutdown behavior, logic-compatible enable input (3.3 V/5 V), undervoltage lockout activation below 4 V, and SOIC/PDIP package compatibility with USB voltage-drop constraints (≤100 mV across switch + PCB).

Technical Context

The TPS2015P integrates gate drive, charge pump, overcurrent sensing, thermal shutdown, and fault reporting into a single high-side switch. Its internal charge pump enables full enhancement of the n-channel MOSFET from 4–5.5 V supply without external components, while undervoltage lockout ensures default-off startup behavior.

Overcurrent protection operates by transitioning to constant-current mode when load exceeds 2 A short-circuit limit (typical), holding until fault removal or disable; thermal shutdown activates above 150 °C junction temperature, with automatic recovery after cooldown. The OC pin asserts low during overcurrent or thermal fault conditions.

Key Specifications

Pinout & Package

TPS2015P is available in an 8-pin Plastic Dual Inline Package (PDIP) with standard through-hole mounting and 0.3-inch body width. Pinout is identical to TPS2014P and matches industry-standard SOIC-8 layout for layout reuse.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2015D and AP2171SG-13, the TPS2015P provides optimal balance of through-hole manufacturability, USB-specific timing (10-µs trip), and self-contained operation - requiring no external gate drive or level-shifting, making it ideal for cost-sensitive, thermally constrained, or serviceable hub designs.

Availability

TPS2015P is available at Aetrix Electronics and suitable for USB self-powered hubs, bus-powered hubs, industrial host controllers, and embedded docking stations requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole packaging.

Supply support for TPS2015P 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The TPS201x family was engineered specifically for USB power distribution - integrating protection, control, and reporting functions into compact, thermally robust switches optimized for 5-V bus compliance and hot-plug reliability.

FAQ

What is the maximum continuous current rating of the TPS2015P?

The TPS2015P is rated for 1 A continuous load current over the full operating temperature range of 0 °C to 125 °C. This rating applies to both SOIC and PDIP packages and is validated under worst-case thermal conditions. At 25 °C ambient with minimal PCB copper, the device can sustain brief peaks above 1 A, but sustained operation beyond 1 A risks thermal shutdown activation. Designers should verify thermal performance using the 120 mΩ max R_ON value at 125 °C when calculating power dissipation for the TPS2015P.

Does the TPS2015P require an external capacitor for charge pump operation?

Yes, the TPS2015P requires a 0.1-µF ceramic capacitor connected between the V_CP pin and GND to support internal charge pump operation. This capacitor enables full gate drive of the n-channel MOSFET when input voltage is as low as 4 V, ensuring reliable turn-on without external boost circuitry. Placement must be within 2 mm of the V_CP and GND pins, using short, low-inductance traces. Omitting or misplacing this capacitor results in incomplete switching and excessive R_ON, degrading voltage regulation and thermal performance of the TPS2015P.

How does the TPS2015P report overcurrent faults?

During overcurrent or thermal fault conditions, the TPS2015P asserts its OC (overcurrent) pin low via an open-drain output. This pin remains low until the fault is removed and the device recovers - either automatically after thermal cooldown or upon toggling the EN pin. The OC signal is electrically compatible with 3.3-V and 5-V logic inputs, allowing direct connection to microcontroller GPIOs or hub controller interrupt lines. No pull-up resistor is required if the host provides one; otherwise, a 10-kΩ pull-up to 3.3 V or 5 V is recommended for clean logic-level signaling from the TPS2015P.

Can the TPS2015P be used in bus-powered hub designs with four ganged ports?

Yes, the TPS2015P supports ganged configurations for bus-powered hubs with up to four output ports. With a maximum 120 mΩ R_ON at 125 °C and 400 mA total load (100 mA per port), the resulting voltage drop is ≤48 mV - well within the 100 mV USB allocation for switch + PCB. Its controlled rise time inherently limits inrush, satisfying the bus-powered hub's <100 mA startup current requirement. However, ferrite beads and careful PCB layout are still required to meet hot-insertion transient droop limits when ganging, as confirmed in TI Application Report SLVA037A for the TPS2015P.

Is the TPS2015P pin-compatible with the TPS2014P?

Yes, the TPS2015P is fully pin-compatible with the TPS2014P in the same PDIP-8 package - sharing identical pinout, footprint, and control interface. The only functional difference is current rating: TPS2014P is rated for 0.6 A continuous, while TPS2015P supports 1 A. This allows direct replacement in existing layouts where higher current capacity or improved thermal margin is needed, provided the PCB copper area and airflow support the increased power dissipation of the TPS2015P under sustained 1-A loads.