Diodes Incorporated AP2822AKETR-G1

Overview

AP2822AKETR-G1 from Diodes Incorporated is a 0.5A high-side power distribution switch in SOT-23-5 package, integrating an N-channel MOSFET with 85mΩ R_DS(ON), soft-start, over-current protection with fold-back, thermal shutdown, and deglitched open-drain FLAG output. It operates from 2.7V to 5.5V and complies with USB voltage-drop requirements for hot-plug USB power management.

For engineers reviewing the AP2822AKETR-G1 datasheet, AP2822AKETR-G1 pinout, AP2822AKETR-G1 application, or AP2822AKETR-G1 equivalent, key selection criteria include current-limit threshold (1.0A typ.), enable logic polarity (active-high), auto-discharge capability via internal pull-low resistor, and UVLO threshold (2.5V typ.)-all critical for USB bus/hub and notebook power rail design.

Technical Context

The AP2822AKETR-G1 implements a charge-pump–driven N-channel MOSFET gate driver enabling low R_DS(ON) operation without external high-side biasing. Its protection architecture combines current-sense–based fold-back OCP, thermal sensing with +150°C shutdown and +30°C hysteresis, and UVLO with 0.2V hysteresis to prevent erratic turn-on during brownout.

FLAG signaling uses deglitched open-drain logic with 10ms typical delay from fault onset, while soft-start limits inrush current by controlling output slew rate. The device includes reverse-current blocking (<1.0µA leakage) and supports both auto-discharge (via 150Ω internal pull-low) and no-auto-discharge variants-this part (AKETR-G1) includes auto-discharge.

Key Specifications

Pinout & Package

SOT-23-5 package (JEDEC MO-178AA, 2.9mm × 1.6mm × 1.1mm), thermally enhanced with exposed drain pad tied to VOUT internally. Pin 1 marked by dot; standard tape-and-reel packaging (3000 pcs/reel).

Key Features

Applications

Availability

AP2822AKETR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and battery-charger circuit protection requiring stable component supply and RoHS/Green compliance.

Supply support for AP2822AKETR-G1 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 solutions for power management, signal integrity, and connectivity applications.

The AP2822 product line delivers integrated high-side power switches optimized for USB-compliant hot-plug power distribution, emphasizing low R_DS(ON), robust fault protection, and compact SOT-23-5 packaging for space-constrained portable systems.

FAQ

What is the maximum continuous current rating for AP2822AKETR-G1?

The AP2822AKETR-G1 is the 0.5A-rated variant (AP2822A series), with a typical current limit of 1.0A and minimum of 0.7A at VOUT = 4.0V. This rating is validated across –40°C to +85°C ambient and accounts for thermal derating in SOT-23-5 package; actual continuous current depends on PCB copper area and airflow.

Does AP2822AKETR-G1 include auto-discharge functionality?

Yes. The "A" suffix and "KETR-G1" ordering code indicate Active-high Enable with Auto-discharge (integrated 150Ω pull-low resistor on VOUT). When EN is deasserted, this resistor discharges VOUT to GND within milliseconds-enabling fast, safe USB hot-unplug without external components.

How does the FLAG output behave during over-temperature events?

The FLAG pin asserts low during both over-current and over-temperature faults. Thermal shutdown triggers at +150°C junction temperature with +30°C hysteresis, and FLAG remains active until the die cools below +120°C. The deglitch circuit ensures only sustained faults (≥5ms) trigger FLAG, rejecting transient thermal spikes.

Can AP2822AKETR-G1 be used in 3.3V-only systems?

Yes. With a 2.7V to 5.5V operating range and 1.6V minimum EN high threshold, AP2822AKETR-G1 interfaces directly with 3.3V microcontrollers or ECs. Its 68µA typical supply current and 1.0µA max shutdown current make it suitable for always-on 3.3V monitoring rails in low-power systems.