Diodes Incorporated PI5PD2068UEEX

Overview

PI5PD2068UEEX from Diodes Incorporated is a 70mΩ high-side N-channel MOSFET power-distribution switch optimized for USB 5V bus-power management in EP-MSOP-8 packaging. It delivers 2.1A continuous current, features accurate 2.85A typical current limiting, thermal/short-circuit protection, and reverse-current blocking - enabling robust hot-plug power control in laptop motherboard USB hubs and self-powered peripherals.

For engineers reviewing the PI5PD2068UEEX datasheet, PI5PD2068UEEX pinout, PI5PD2068UEEX application, or PI5PD2068UEEX equivalent, key selection criteria include its 2.7V–5.5V operating range, 0.6ms typical rise time, 1μA standby supply current, deglitched /OC fault reporting, and UL recognition (E341484) for safety-critical USB power delivery designs.

Technical Context

The PI5PD2068UEEX integrates a charge-pump gate driver to fully enhance its internal 70mΩ N-channel MOSFET across the full 2.7V–5.5V input range. Its constant-current limiting activates at 2.85A (typ.), entering foldback mode during sustained overloads to limit power dissipation.

Thermal shutdown triggers at 135°C with 10°C hysteresis, enabling automatic recovery at ~125°C. The /OC pin provides open-drain, deglitched fault signaling (12ms typical assertion delay for overcurrent; instantaneous for thermal events), while under-voltage lockout disables the switch below ~2.0V input to prevent erratic turn-on during rail ramp-up.

Key Specifications

Pinout & Package

PI5PD2068UEEX uses an 8-pin Exposed-Pad MSOP (EP-MSOP-8) package with thermal pad internally connected to GND for PCB heat sinking. Pin 1 is GND; pins 2–3 are parallel IN inputs; pin 4 is active-low /EN; pin 5 is open-drain /OC; pins 6–8 are parallel OUT outputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036IRHBR and AP22653WU-7, PI5PD2068UEEX uniquely combines UL safety certification, deglitched fault signaling, and reverse-current blocking - making it the only option qualified for certified USB host/hub designs requiring independent power-gating control and robust fault diagnostics.

Availability

PI5PD2068UEEX is available at Aetrix Electronics and suitable for USB host controllers, laptop motherboard power management, and set-top box peripheral port protection requiring stable component supply, long-term lifecycle support, and traceable green packaging.

Supply support for PI5PD2068UEEX 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, specializing in power management, signal integrity, and protection solutions for computing, consumer, and industrial markets.

The PI5PD2068UEEX belongs to Diodes' USB power-distribution switch product line, engineered specifically to meet USB-IF electrical compliance requirements for host-side current limiting, hot-plug reliability, and fault reporting in space-constrained applications.

FAQ

What is the function of the /OC pin, and how should it be interfaced?

The /OC pin is an open-drain output that asserts low during overcurrent or thermal shutdown events. It requires an external pull-up resistor (typically 100 kΩ to V_CC) to generate a valid logic-high when inactive. Its 12 ms deglitch filter prevents false triggering from transient load spikes, and it remains asserted until the fault condition clears - enabling reliable firmware-based port disable and recovery sequencing.

Does PI5PD2068UEEX support reverse current flow from OUT to IN?

No - PI5PD2068UEEX includes integrated reverse-current blocking. When the switch is disabled (/EN high), the internal MOSFET body diode is effectively blocked by control circuitry, preventing current flow from OUT to IN. This eliminates the need for an external Schottky diode in battery-backup or dual-rail systems where backfeed could damage upstream sources.

How does the device behave during input undervoltage conditions?

PI5PD2068UEEX incorporates under-voltage lockout (UVLO) that forces the switch OFF when input voltage falls below ~2.0 V, with 75 mV hysteresis. This prevents erratic turn-on behavior during power-up or brownout events. The switch remains disabled until VIN rises above ~2.075 V, ensuring clean, monotonic power sequencing without oscillation or partial conduction.

Can PI5PD2068UEEX be used in 3.3V-only systems?

Yes - PI5PD2068UEEX operates from 2.7 V to 5.5 V, making it fully functional at 3.3 V nominal input. At 3.3 V, R_DS(on) increases to 75 mΩ (typ.), still delivering 2.1 A continuous with <160 mV drop. Its charge pump ensures full gate drive at 3.3 V, and all specifications (including /OC response and current limit) remain valid across the entire voltage range.