Diodes Incorporated PI5PD2061TAEX

Overview

PI5PD2061TAEX from Diodes Incorporated is a 70mΩ high-side N-channel MOSFET power-distribution switch designed for USB host and hub applications. It delivers 1.5A continuous current, features accurate 2.3A typical over-current limiting, thermal shutdown at 135°C, reverse current blocking, and operates across 2.7V–5.5V input range - meeting USB voltage-drop and hot-plug safety requirements in laptop motherboards and self-powered hubs.

For engineers reviewing the PI5PD2061TAEX datasheet, PI5PD2061TAEX pinout, PI5PD2061TAEX application, or PI5PD2061TAEX equivalent, key selection criteria include R_DS(on) stability over temperature, /OC open-drain fault reporting timing (14ms deglitch), UVLO threshold (2.0–2.5V), and standby current (≤0.2μA) in battery-sensitive USB peripheral designs.

Technical Context

The PI5PD2061TAEX integrates a charge-pump gate driver to fully enhance its internal N-channel MOSFET, enabling low 70mΩ R_DS(on) at 2.7V input - critical for minimizing voltage drop in 5V USB power rails. Its /EN pin is active-low, compatible with standard CMOS/TTL logic, and asserts /OC only after 14ms deglitched delay during over-current events.

Thermal protection activates at 135°C junction temperature with 10°C hysteresis, enabling automatic recovery once cooled to ~125°C. Under-voltage lockout disables the switch below ~2.0V and re-enables it only after stable input exceeds 2.5V, preventing erratic turn-on during brown-out conditions.

Key Specifications

Pinout & Package

PI5PD2061TAEX is packaged in lead-free, RoHS-compliant SOIC-8 (JEDEC MS-012) with exposed pad for enhanced thermal performance. Pin numbering follows 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 TUSB2036IRHBR and AP22653WU-7, PI5PD2061TAEX offers deterministic 14ms /OC deglitching, verified UVLO hysteresis, and guaranteed thermal recovery behavior - making it preferred for industrial USB host designs requiring predictable fault handling and minimal firmware intervention.

Availability

PI5PD2061TAEX is available at Aetrix Electronics and suitable for laptop motherboard power distribution, self-powered USB hub design, and set-top box USB port protection requiring stable component supply and long-term lifecycle support.

Supply support for PI5PD2061TAEX 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 PI5PD2061TAEX belongs to Diodes' USB power-distribution switch product line, engineered specifically for compliance with USB 2.0/3.0 hot-plug requirements, low R_DS(on) efficiency, and robust fault reporting in space-constrained host systems.

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 100 kΩ to V_CC - to avoid excessive current draw. The 14ms deglitch filter ensures only sustained faults trigger the signal, reducing false interrupts from inrush transients. USB controllers monitor this pin to disable affected ports without resetting the entire hub.

Does PI5PD2061TAEX support reverse current blocking, and under what conditions?

Yes - PI5PD2061TAEX blocks reverse current from OUT to IN when disabled (/EN high), due to its integrated N-channel MOSFET configuration and body-diode orientation. This occurs automatically without external components and is effective across the full operating temperature range (−40°C to +85°C ambient). Blocking is maintained even during UVLO or thermal shutdown states.

How does the device behave during input voltage ramp-up?

During power-up, the under-voltage lockout (UVLO) holds the switch off until input voltage exceeds ~2.5V, then enables it only after internal bias stabilizes. This prevents partial turn-on and ensures /OC remains high until valid operation begins - eliminating glitches that could mislead USB controllers during enumeration. No external reset circuitry is required.

Can PI5PD2061TAEX be used in 3.3V-only systems, and what is its R_DS(on) at that voltage?

Yes - PI5PD2061TAEX operates down to 2.7V and maintains 70mΩ typical R_DS(on) at 3.3V input (measured at 1.0A, −40°C to +125°C). At 2.7V, R_DS(on) rises to 75mΩ max, still delivering ≤112.5mV drop at 1.5A - well within USB 2.0's 150mV maximum allowable V_BUS drop specification.