Diodes Incorporated PI5PD2069WEX

Overview

PI5PD2069WEX from Diodes Incorporated is a 70mΩ high-side N-channel MOSFET power-distribution switch designed for USB 5V bus power management in host and self-powered hubs. It delivers 2.1A continuous current, features accurate 2.85A typical current limiting, thermal shutdown at 135°C, and reverse current blocking - enabling robust hot-plug protection in laptop motherboards and set-top box power rails.

For engineers reviewing the PI5PD2069WEX datasheet, PI5PD2069WEX pinout, PI5PD2069WEX application, or PI5PD2069WEX equivalent, key selection criteria include enable polarity (active-high EN), /OC open-drain fault reporting with 14ms deglitch, 0.6ms typical rise time, and SOIC-8 package thermal performance up to +105°C junction temperature.

Technical Context

The PI5PD2069WEX integrates a charge-pump gate driver to fully enhance its internal 70mΩ N-channel MOSFET across 2.7–5.5V input range. Its current-limit circuit uses real-time sensing to enter constant-current mode at 2.85A (typ), while thermal protection activates at 135°C with 10°C hysteresis and automatic recovery at 125°C.

It implements under-voltage lockout (UVLO) with ~2.0V turn-on threshold and 75mV hysteresis, ensures glitch-free /OC assertion during power-up, and supports reverse current blocking when disabled - all within a single SOIC-8 package with exposed thermal pad tied to GND.

Key Specifications

Pinout & Package

PI5PD2069WEX is housed in a lead-free, green SOIC-8 package (JEDEC MS-012) with exposed thermal pad internally connected to GND for enhanced heat dissipation. The package footprint supports standard reflow profiles and provides 600mW max power dissipation at T_A = 70°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036IPWR and TPS2051BDBVR, PI5PD2069WEX uniquely combines UL recognition, reverse current blocking, and dedicated /OC reporting - making it optimal for discrete USB power rail protection where safety, isolation, and fault diagnostics are mandatory.

Availability

PI5PD2069WEX is available at Aetrix Electronics and suitable for laptop motherboard designs, USB self-powered hubs, and set-top box peripheral power rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for PI5PD2069WEX 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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and connectivity applications.

The PI5PD2069WEX belongs to Diodes' USB power-distribution switch product line, engineered specifically for compliant, thermally robust 5V bus switching in host, hub, and peripheral equipment.

FAQ

What is the enable polarity of PI5PD2069WEX?

The PI5PD2069WEX uses active-high enable logic: applying ≥2V to pin 4 (EN) turns on the internal MOSFET, while ≤0.8V disables it. This differs from the pin-compatible PI5PD2068, which uses active-low /EN. Confirm schematic net naming to avoid functional inversion.

Does PI5PD2069WEX support reverse current blocking?

Yes - when disabled, the internal N-channel MOSFET blocks reverse current flow from OUT to IN due to body-diode orientation and gate control. This prevents backfeeding into upstream supplies, a critical requirement for USB hub isolation and battery-powered systems.

How does the /OC pin behave during thermal shutdown versus overcurrent?

/OC asserts low instantaneously during thermal shutdown, but with a 14ms deglitch delay for overcurrent events. This prevents false trips from transient inrush; once asserted, /OC remains low until the fault condition clears and internal recovery thresholds are met.

What is the maximum allowable power dissipation in SOIC-8 package?

At T_A = 70°C, the SOIC-8 package supports up to 600mW continuous power dissipation. With R_DS(on) = 70mΩ and I_OUT = 2.1A, PD = 0.309W - well within limit. Derate linearly above 70°C using θ_JA = 125°C/W (typ) to maintain T_J ≤ 105°C.