Texas Instruments TPS2560ADRCT

Overview

TPS2560ADRCT from Texas Instruments is a dual-channel, precision adjustable current-limited power distribution switch using two 44-mΩ N-channel high-side MOSFETs. It operates from 2.5 V to 6.5 V input, delivers up to 2.5 A per channel, features active-low enable (EN1/EN2), and provides fast 3.5-μs overcurrent response - ideal for USB port protection in embedded host systems.

For engineers reviewing the TPS2560ADRCT datasheet, TPS2560ADRCT pinout, TPS2560ADRCT application, or TPS2560ADRCT equivalent, this device supports precise current-limit programming (250 mA–2.8 A) via RILIM, includes independent FAULT1/FAULT2 open-drain flags, thermal shutdown at 135°C/155°C, and UL/CB/Nemko safety certification for production-grade power management.

Technical Context

The TPS2560ADRCT integrates an internal charge pump to drive N-channel MOSFET gates above source potential, enabling full enhancement down to 2.5 V VIN. Its current-sense loop regulates output current by linearly biasing the MOSFET during overload, reducing VOUT while holding IOUT at IOS.

Each channel features independent enable control (active-low EN1/EN2), 9-ms deglitched FAULTx assertion, built-in soft-start via controlled rise/fall times (0.4–3 ms), and dual thermal sensing: OTSD (135°C per channel) and OTSD2 (155°C global shutdown) with 20°C hysteresis.

Key Specifications

Pinout & Package

DRC package is a 10-pin 3 mm × 3 mm SON (Small Outline No-lead) thermally enhanced package with exposed PowerPAD™ for PCB heat sinking. Pin 1 is top-left corner (pad marked); pin numbering follows standard counter-clockwise layout with GND connected to PowerPAD.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel current-limited power switch applications.

Compared with TPS2561ADRCT, the TPS2560ADRCT provides identical protection and regulation but matches low-true control logic; versus TPS259211DRCR, it delivers true dual-channel independence with lower BOM count and simpler fault diagnostics in USB and consumer electronics applications.

Availability

TPS2560ADRCT is available at Aetrix Electronics and suitable for USB hubs, digital TVs, VOIP phones, and set-top boxes requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for TPS2560ADRCT 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 expertise in high-reliability power distribution solutions.

The TPS2560A/61A product line was designed specifically for precision current-limited USB and consumer electronics power switching, emphasizing safety certification, thermal robustness, and ease of system integration.

FAQ

What is the enable logic polarity of the TPS2560ADRCT?

The TPS2560ADRCT uses active-low enable inputs: EN1 and EN2 must be driven low to turn on their respective channels. This differs from the TPS2561ADRCT, which uses active-high enables. The enable threshold is 0.66 V (max) for logic low and 1.1 V (min) for logic high, ensuring compatibility with standard CMOS/TTL outputs. This polarity simplifies interfacing with microcontrollers that default to high-Z or pulled-high GPIOs.

How is current limiting set on the TPS2560ADRCT?

The TPS2560ADRCT sets identical current limits for both channels using a single external resistor (RILIM) connected between ILIM and GND. With RILIM values from 20 kΩ to 187 kΩ, the device achieves a typical current-limit range of 250 mA to 2.8 A. For example, a 24.3 kΩ ±1% resistor yields 2.3 A (min 2.1 A, max 2.5 A). The ILIM pin regulates a reference voltage, making the limit highly stable across temperature and supply voltage.

What thermal protection features does the TPS2560ADRCT include?

The TPS2560ADRCT incorporates two independent thermal protection mechanisms: OTSD (135°C min) disables individual channels during sustained overcurrent, and OTSD2 (155°C min) shuts down both channels under extreme die temperature regardless of current state. Both feature ~20°C hysteresis to prevent oscillation. Thermal shutdown is monitored locally on-die, and recovery occurs automatically once junction temperature falls below the hysteresis threshold - no external reset required.

Can the TPS2560ADRCT support auto-retry functionality after a fault?

Yes - the TPS2560ADRCT supports auto-retry using external RC networks connecting FAULTx to ENx. During overcurrent, FAULTx pulls low, disabling the channel; once the fault clears, FAULTx goes high-impedance and CRETRY charges through RRETRY, re-enabling the channel when ENx crosses its 1.1 V turn-on threshold. TI recommends 100 kΩ and 0.22 µF for ~20 ms retry interval. This eliminates manual reset requirements in consumer USB applications.

What package and thermal characteristics apply to the TPS2560ADRCT?

The TPS2560ADRCT uses the DRC package: a 3 mm × 3 mm, 10-pin SON with exposed PowerPAD™ thermally enhanced pad. Mounted on a JEDEC high-K board, it achieves θJA = 41.6°C/W and θJC = 10.7°C/W, supporting up to 2403 mW continuous power dissipation at TA ≤25°C. The PowerPAD must be soldered to a solid GND copper pour for optimal thermal performance - insufficient thermal relief reduces safe operating current significantly.