Diodes Incorporated AP2822GKETR-G1

Overview

AP2822GKETR-G1 from Diodes Incorporated is a 2.0A high-side power distribution switch with integrated N-channel MOSFET, charge pump, and protection circuitry. It delivers 85mΩ R_DS(ON) at 5V, supports 2.7–5.5V input, features active-high enable, auto-discharge pull-low resistor, and FLAG fault reporting - designed for USB bus-powered hubs and hot-plug power rails in notebooks and motherboards.

For engineers reviewing the AP2822GKETR-G1 datasheet, AP2822GKETR-G1 pinout, AP2822GKETR-G1 application, or AP2822GKETR-G1 equivalent, key selection criteria include current limit accuracy (2.2–3.2A), soft-start timing (500µs turn-on), UVLO threshold (2.5V typ), and thermal shutdown behavior at +150°C junction temperature.

Technical Context

The AP2822GKETR-G1 implements a charge-pump–driven N-channel MOSFET gate driver to achieve low R_DS(ON) without requiring an external bootstrap capacitor. Its fold-back over-current protection reduces short-circuit power dissipation, while deglitched open-drain FLAG output provides reliable fault signaling to host controllers.

UVLO ensures startup only above 2.5V (±0.3V), and thermal shutdown activates at +150°C with +30°C hysteresis. The device includes reverse-current blocking and operates across –40°C to +85°C ambient, supporting USB-compliant voltage-drop requirements under full 2.0A load.

Key Specifications

Pinout & Package

SOT-23-5 package (KE variant per ordering code), 2.9 mm × 1.6 mm footprint, 1.1 mm height, lead-free and RoHS/Green compliant.

Key Features

Applications

Availability

AP2822GKETR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard design, and hot-plug docking station development requiring stable component supply and RoHS/Green compliance.

Supply support for AP2822GKETR-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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.

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

FAQ

What is the maximum continuous output current supported by AP2822GKETR-G1?

The AP2822GKETR-G1 is rated for 2.0A continuous load per its part-number suffix 'G'. Electrical characteristics confirm a typical current limit of 2.2A at V_OUT = 4.0V, with guaranteed minimum of 2.2A and maximum of 3.2A across temperature and voltage ranges. This rating assumes adequate PCB copper area for thermal dissipation.

Does AP2822GKETR-G1 require an external pull-up resistor on the FLAG pin?

Yes - the FLAG pin is an open-drain output and must be pulled up externally (typically 4.7kΩ to 5V) to generate a valid logic-high level when no fault is present. The deglitched active-low signal drives low during over-current or over-temperature events, enabling direct interfacing with standard USB host controller GPIO inputs.

How does the auto-discharge function operate during shutdown?

When the EN pin is de-asserted, an internal 100–200Ω resistor connects VOUT to GND, discharging output capacitance within milliseconds. This eliminates residual voltage that could cause backfeed or unsafe hot-plug conditions. Devices without 'A'/'C'/'E'/'G' suffixes (e.g., GN) omit this resistor and require external discharge circuitry.

Is AP2822GKETR-G1 recommended for new designs?

No - the official Diodes Incorporated datasheet explicitly states "NOT RECOMMENDED FOR NEW DESIGN" and confirms "NO ALTERNATE PART" is designated. It remains available for legacy support and existing production, but designers should consult Diodes' latest portfolio (e.g., AP2823 series or AP2265x family) for updated alternatives with extended lifetime and enhanced features.