Diodes Incorporated PI3PD22920GBEX

Overview

PI3PD22920GBEX from Diodes Incorporated is an ultra-low R_ON integrated load switch featuring an N-channel MOSFET with controlled slew-rate turn-on, 4-A continuous current capability, input voltage range of 0.75 V to 3.6 V, and on-resistance as low as 5.3 mΩ at 3.6 V. It is used for power domain sequencing and rail enablement in space-constrained portable electronics.

For engineers reviewing the PI3PD22920GBEX datasheet, PI3PD22920GBEX pinout, PI3PD22920GBEX application, or PI3PD22920GBEX equivalent, key selection criteria include ultra-low input voltage support (down to 0.75 V), precise rise-time control (880 μs at 3.6 V), quick output discharge (1250 Ω internal pulldown), and CSP-8 package footprint compatibility with high-density PCB layouts.

Technical Context

The device integrates a charge-pump–biased NMOS pass transistor enabling sub-1-V operation while maintaining low R_ON. Its active-high ON input accepts logic-level signals directly-no level-shifting required-and features built-in ESD protection (8 kV HBM, 1 kV CDM).

Controlled turn-on slew rate (880 μs typical at 3.6 V) limits inrush current into capacitive loads, while the integrated 1250 Ω pulldown resistor ensures rapid V_OUT discharge upon shutdown. Thermal performance is rated for –40°C to +85°C free-air operation with 125°C max junction temperature.

Key Specifications

Pinout & Package

PI3PD22920GBEX is housed in an ultra-small 0.9 mm × 1.9 mm, 0.5-mm pitch Chip Scale Package (CSP-8) with bottom-terminal ball layout. The package supports automated optical inspection (AOI) and is compatible with standard reflow profiles for lead-free assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar load switch applications.

Compared with TPL7407LDR and TPS22916BLYFPR, PI3PD22920GBEX uniquely delivers sub-1-V operation, 4-A capacity, and integrated discharge in a 1.71 mm² CSP - making it optimal for next-generation portable SoC power domains requiring tight voltage and space constraints.

Availability

PI3PD22920GBEX is available at Aetrix Electronics and suitable for notebook computers, tablet PCs, smartphones, and GPS navigation devices requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for PI3PD22920GBEX 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 high-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

This device belongs to Diodes' PI3PD series of ultra-low-voltage load switches, designed specifically for advanced portable electronics requiring precision power sequencing below 1 V and minimal board footprint.

FAQ

What is the minimum input voltage supported by PI3PD22920GBEX?

The device operates down to 0.75 V, verified per DS41251 Rev 2-3 Recommended Operating Conditions. At this voltage, R_ON is 7.3 mΩ (typ), t_ON is 840 μs, and quiescent current is 22–37 μA - enabling direct use with sub-1-V SoC core rails without level translation.

Does PI3PD22920GBEX require an external pull-down on the ON pin?

No. The ON pin has no internal pull-down; however, the datasheet explicitly states "do not leave floating." A system-level pull-down resistor (e.g., 100 kΩ to GND) is required if the controlling logic cannot guarantee a defined low state during power-up or reset.

How does the internal quick-output discharge function?

An integrated 1250 Ω (typ) pulldown resistor connects V_OUT to GND when the switch is disabled. This discharges output capacitance rapidly - typically within tens of microseconds - eliminating residual voltage that could cause latch-up or false wake events in downstream circuitry.

Is PI3PD22920GBEX pin-compatible with PI3PD22920BGBEX?

Yes - both share identical GB (CSP-8) package, pinout, and footprint. The 'B' suffix denotes a revised version with lower quiescent current (e.g., 35 μA vs. 68 μA at 3.6 V), but electrical and mechanical compatibility is maintained for drop-in replacement in existing designs.