Diodes Incorporated AP2822GKTR-G1

Overview

AP2822GKTR-G1 from Diodes Incorporated is a 2.0A high-side power distribution switch with integrated N-channel MOSFET, charge pump, and protection circuitry. It features 85mΩ R_DS(ON), 2.7–5.5V operating range, active-high enable, auto-discharge pull-low resistor, and open-drain FLAG output for fault reporting-designed specifically for USB bus-powered hub and hot-plug power supply applications.

For engineers reviewing the AP2822GKTR-G1 datasheet, AP2822GKTR-G1 pinout, AP2822GKTR-G1 application, or AP2822GKTR-G1 equivalent, key selection criteria include current limit (2.7A typ. at 5V), soft-start timing (500µs turn-on), UVLO threshold (2.5V), thermal shutdown (150°C), and SOT-23-5 package compatibility with space-constrained USB port designs.

Technical Context

The AP2822GKTR-G1 implements a charge-pump–driven N-channel MOSFET high-side switch to achieve low on-resistance while maintaining logic-level control. Its internal UVLO ensures operation only above 2.5V, and deglitched open-drain FLAG output signals over-current or over-temperature faults with 10ms typical delay.

It integrates fold-back short-circuit protection limiting output current to 1.1A during V_OUT = 0V, soft-start to constrain inrush, and thermal shutdown with 30°C hysteresis. The auto-discharge function uses an internal 150Ω pull-low resistor on V_OUT after shutdown to dissipate stored charge.

Key Specifications

Pinout & Package

SOT-23-5 package (K variant), 2.9mm × 1.6mm footprint, 1.3mm height, lead-free and RoHS/Green compliant.

Key Features

Applications

Availability

AP2822GKTR-G1 is available at Aetrix Electronics and suitable for USB power management, hot-plug power supplies, and notebook motherboard PC designs requiring stable component supply and RoHS/Green compliance.

Supply support for AP2822GKTR-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 load switches optimized for USB-compliant power distribution, emphasizing low R_DS(ON), fast fault response, and compact SOT-23-5 packaging for space-constrained host systems.

FAQ

What is the purpose of the internal pull-low resistor on VOUT?

The internal 150Ω pull-low resistor discharges residual voltage on VOUT after shutdown, preventing floating outputs that could cause latch-up or unintended behavior in downstream USB devices. This eliminates the need for external discharge circuitry in USB hot-plug applications and ensures safe reconnection timing.

Does AP2822GKTR-G1 support reverse current blocking?

Yes - it blocks reverse current (≤1.0µA leakage) when disabled and VOUT > VIN, preventing backfeed from powered peripherals into the host system. This is critical for USB OTG and dual-role port designs where VOUT may be driven externally during suspend states.

How does the fold-back current limiting behave during a short circuit?

Under VOUT short-to-ground, the AP2822GKTR-G1 reduces output current to 1.1A (typ.) instead of holding 2.0A, lowering power dissipation and junction temperature. This fold-back action extends fault tolerance time and avoids immediate thermal shutdown during intermittent shorts.

Is AP2822GKTR-G1 recommended for new designs?

No - Diodes Incorporated marks AP2822 as "NOT RECOMMENDED FOR NEW DESIGN" with no alternate part provided. It remains available for legacy production and repair, but designers should consult Diodes' latest load switch portfolio (e.g., AP2265x, AP2291x) for enhanced features and long-term support.