Diodes Incorporated PI5PD2061UEEX

Overview

PI5PD2061UEEX from Diodes Incorporated is a 70mΩ high-side N-channel MOSFET power-distribution switch designed for USB host and self-powered hub applications. It delivers 1.5A continuous output current, features accurate 2.3A typical over-current limiting, operates from 2.7V to 5.5V, and includes thermal shutdown, reverse current blocking, and deglitched /OC fault reporting - enabling robust hot-plug power control in laptop motherboards and USB peripherals.

For engineers reviewing the PI5PD2061UEEX datasheet, PI5PD2061UEEX pinout, PI5PD2061UEEX application, or PI5PD2061UEEX equivalent, key selection criteria include its 70mΩ R_DS(on) at 5V, 0.6ms typical rise time, -40°C to +85°C ambient operation, 1μA standby supply current, and SOIC-8 package with validated /EN and /OC logic behavior.

Technical Context

The PI5PD2061UEEX integrates a charge-pump gate driver to fully enhance its internal N-channel MOSFET, enabling low 70mΩ on-resistance while operating from a 2.7–5.5V input rail - critical for meeting USB voltage-drop compliance. Its /EN pin is active-low, asserting the switch only when pulled low, and it disables output with <1μA quiescent current.

Over-current protection triggers at 2.3A (typ.) with 4–15ms deglitch timing, and thermal shutdown activates at 135°C (±10°C hysteresis), automatically recovering at ~125°C. The open-drain /OC output reports both over-current and thermal faults, requiring an external pull-up resistor (e.g., 100kΩ) for proper logic-level signaling.

Key Specifications

Pinout & Package

PI5PD2061UEEX is packaged in a lead-free, RoHS-compliant SOIC-8 (JEDEC MS-012) with exposed pad for enhanced thermal performance. Pin numbering follows standard top-view orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDR and AP2171WG-7, the PI5PD2061UEEX uniquely combines 70mΩ R_DS(on), active-low /EN, reverse current blocking, and factory-deglitched /OC - making it optimal for USB-compliant host-side power switching where reliability under transient fault conditions is prioritized.

Availability

PI5PD2061UEEX is available at Aetrix Electronics and suitable for laptop motherboard power distribution, USB host port protection, and set-top box peripheral management requiring stable component supply and long-term industrial availability.

Supply support for PI5PD2061UEEX 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 PI5PD2061UEEX belongs to Diodes' PI5PD family of USB-compliant power-distribution switches, engineered specifically for high-reliability, current-limited hot-plug power control in host and self-powered USB 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 over-current or thermal shutdown events. It requires an external pull-up resistor (typically 100kΩ to VCC) to generate a valid logic-high level when inactive. The output remains low until the fault condition clears and the device recovers - no software reset is needed. Deglitch timing (4–15ms) prevents false triggering from brief transients.

Does PI5PD2061UEEX support reverse current blocking, and under what conditions?

Yes - the PI5PD2061UEEX blocks reverse current flow from OUT to IN when the switch is disabled (/EN high). This occurs because the internal N-channel MOSFET's body diode is oriented to block reverse conduction, and the gate drive is fully removed during disable. Reverse leakage is limited to 1μA max at 25°C, eliminating need for external blocking diodes in most USB applications.

How does thermal shutdown interact with over-current protection?

Thermal shutdown activates only under sustained over-current or short-circuit conditions that raise junction temperature to ~135°C. It is not triggered by brief current surges. Once activated, the switch turns off and /OC goes low; recovery begins automatically when junction temperature falls to ~125°C. Over-current detection (2.3A typ.) acts first, limiting current before thermal limits are reached - providing layered protection.

Can PI5PD2061UEEX operate from a 3.3V input rail, and what impact does this have on performance?

Yes - the device operates across 2.7V to 5.5V. At 3.3V IN, R_DS(on) increases to 75mΩ (typ.), and rise time improves to 0.4ms (typ.). Continuous current remains rated at 1.5A, but short-circuit current drops to 1.5A (typ.) due to reduced gate drive headroom. All protections (UVLO, /OC, thermal) remain fully functional across the entire input range.