Diodes Incorporated AP2822GKBTR-G1

Overview

AP2822GKBTR-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 2.0/3.0 hot-plug power management in notebooks and motherboard hubs.

For engineers reviewing the AP2822GKBTR-G1 datasheet, AP2822GKBTR-G1 pinout, AP2822GKBTR-G1 application, or AP2822GKBTR-G1 equivalent, key selection criteria include current limit (2.0A), soft-start timing (500µs turn-on), UVLO threshold (2.5V typ), thermal shutdown (150°C), and open-drain FLAG response to over-current (10ms delay).

Technical Context

The AP2822GKBTR-G1 implements a charge-pump–driven N-channel MOSFET high-side switch with fold-back over-current protection and deglitched open-drain FLAG output. Its internal UVLO ensures operation only above 2.5V, while thermal sensing triggers shutdown at 150°C with 30°C hysteresis.

It integrates soft-start to limit inrush current during enable, supports no reverse current when disabled, and provides auto-discharge via an internal 100–200Ω pull-low resistor on VOUT after shutdown - critical for safe USB hot-plug sequencing and bus isolation.

Key Specifications

Pinout & Package

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

Key Features

Applications

Availability

AP2822GKBTR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and hot-plug hub applications requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.

Supply support for AP2822GKBTR-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.

The AP2822 product line delivers highly integrated, USB-compliant high-side switches targeting portable and embedded systems requiring precise current limiting, fault reporting, and hot-plug safety - with variants optimized for 0.5A to 2.0A loads.

FAQ

What is the function of the FLAG pin on AP2822GKBTR-G1?

The FLAG pin is an open-drain, active-low fault indicator that asserts when over-current or over-temperature conditions occur. It requires an external pull-up resistor and provides a deglitched 10ms-delayed signal to notify the host controller, enabling reliable fault handling without false triggers from transients.

Does AP2822GKBTR-G1 support reverse current blocking?

Yes - the device blocks reverse current flow from VOUT to VIN when disabled, with leakage specified at ≤1.0µA (typical 0.1µA) when VOUT exceeds VIN. This prevents back-feeding in multi-source systems and satisfies USB isolation requirements.

How does the auto-discharge feature operate on AP2822GKBTR-G1?

Upon disable (EN low), an internal 100–200Ω pull-down resistor connects to VOUT, actively discharging output capacitance. This ensures rapid VOUT decay (<10ms for typical 1µF loads), eliminating need for external discharge circuitry and supporting USB hot-plug safety standards.

Is AP2822GKBTR-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 support and existing production, but design-in for new projects should consider next-generation alternatives from Diodes or other vendors.