Diodes Incorporated PI5PD2560ZEEX

Overview

PI5PD2560ZEEX from Diodes Incorporated is a dual-channel, adjustable current-limited power distribution switch using N-channel MOSFETs for USB-compliant port protection. It delivers ±7.5% current-limit accuracy at 2.8A, 44mΩ R_DS(on), 3.5μs over-current response, and operates from 2.5V to 5.5V input. Used in USB hubs and digital TV power rails to prevent damage from short circuits and heavy capacitive loads.

For engineers reviewing the PI5PD2560ZEEX datasheet, PI5PD2560ZEEX pinout, PI5PD2560ZEEX application, or PI5PD2560ZEEX equivalent, key selection criteria include programmable current limit (250mA–2.8A per channel), dual independent /FAULTx outputs, reverse input-output voltage protection, and TDFN 3×3-10L thermal performance with 135°C thermal shutdown.

Technical Context

The device integrates two independent high-side N-MOSFET power switches with internal charge pump gate drive, enabling full enhancement down to 2.5V input. Each channel features separate enable (/EN1, /EN2) and fault (/FAULT1, /FAULT2) signals with 9ms deglitch timing to suppress false triggering during capacitive inrush.

Current limiting is set via a single external resistor (R_ILIM = 20kΩ–187kΩ) that programs both channels identically; the regulation loop maintains constant-current mode during overload by linearly biasing the MOSFET, reducing V_OUT while holding I_OUT at the programmed threshold.

Key Specifications

Pinout & Package

Package: TDFN 3×3 mm, 10-lead, exposed thermal pad (Power Pad). Pin pitch: 0.5 mm. RoHS-compliant, halogen-free, UL E341484 listed.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036VFR and TPS2051BDR, PI5PD2560ZEEX offers dual independent channels, programmable current limit across 250mA–2.8A, 44mΩ R_DS(on), and comprehensive fault diagnostics - making it uniquely suited for multi-rail, high-reliability consumer electronics requiring USB-compliant protection.

Availability

PI5PD2560ZEEX is available at Aetrix Electronics and suitable for USB hubs, digital TV power management, and VoIP phone peripheral interfaces requiring stable component supply, long-term lifecycle support, and production-grade traceability.

Supply support for PI5PD2560ZEEX 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

The PI5PD series targets high-reliability power distribution in consumer and computing applications, emphasizing precision current limiting, fast fault response, and compact packaging for space-constrained USB and multimedia platforms.

FAQ

What is the minimum recommended R_ILIM value and why?

The minimum recommended R_ILIM is 20 kΩ. Using a lower resistance risks instability in the internal current-regulation loop, leading to inaccurate or oscillatory current limiting. The datasheet specifies this value to ensure reliable operation across temperature and process variation, and to maintain ±7.5% accuracy at 2.8A. Deviating below 20 kΩ may cause premature or inconsistent tripping.

How does the /FAULTx deglitch function interact with thermal shutdown?

The 9ms deglitch circuit applies only to over-current faults; it is disabled during thermal shutdown events. When OTSD (135°C) triggers, /FAULTx asserts immediately without delay and remains asserted until the junction cools ~20°C and the channel re-enables. This unidirectional deglitch prevents oscillation during sustained over-temperature but preserves fast response to thermal emergencies.

Can PI5PD2560ZEEX drive a 1000 µF output capacitor safely?

Yes - the built-in soft-start controls rise/fall times (0.2–4 ms depending on input voltage), limiting inrush current into large capacitors. With proper input decoupling (≥0.1 µF ceramic at IN/GND), the device safely manages 1000 µF loads without exceeding SOA limits or triggering false /FAULT assertions, as verified in typical application schematics.

Is the Power Pad (exposed thermal pad) electrically connected to GND?

Yes - the exposed thermal pad is internally connected to GND (Pin 1) and must be soldered to a PCB thermal pad tied directly to the main ground plane. This connection is essential for achieving rated power dissipation (2400 mW), maintaining junction temperature within safe limits, and ensuring specified R_DS(on) and thermal shutdown accuracy.