Diodes Incorporated AP2822AKBTR-G1

Overview

AP2822AKBTR-G1 from Diodes Incorporated is a high-side power distribution switch integrating an N-channel MOSFET with 85 mΩ R_DS(ON), charge pump, soft-start, over-current protection (OCP), thermal shutdown, and deglitched open-drain FLAG output. It delivers 0.5 A continuous load current, operates from 2.7 V to 5.5 V, and meets USB voltage-drop requirements for hot-plug USB bus power management.

For engineers reviewing the AP2822AKBTR-G1 datasheet, AP2822AKBTR-G1 pinout, AP2822AKBTR-G1 application, or AP2822AKBTR-G1 equivalent, key selection criteria include its active-high enable logic, auto-discharge pull-low resistor, 5-pin SOT-23-5 package, 1.0 µA max shutdown current, and fault-flag signaling for USB controller coordination.

Technical Context

The AP2822AKBTR-G1 implements a charge-pump–driven N-channel MOSFET gate driver to achieve low on-resistance while operating from a 2.7–5.5 V supply - eliminating need for external gate bias. Its integrated fold-back OCP responds to short-circuit events by limiting output current to ~0.7 A at V_OUT = 0 V, while thermal shutdown activates at +150 °C with +30 °C hysteresis.

Under-voltage lockout (UVLO) ensures turn-off below 2.2–3.0 V (typ. 2.5 V), and soft-start limits inrush current during enable. The deglitched open-drain FLAG pin asserts low within 5–15 ms of OCP/OTP fault detection, requiring external pull-up for USB controller interface.

Key Specifications

Pinout & Package

SOT-23-5 (KB package), 2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm lead pitch, RoHS-compliant and halogen-free "Green" construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side power switch applications.

Compared with TPS22965DRLR and AP2821AKBTR-G1, the AP2822AKBTR-G1 uniquely balances USB compliance, integrated auto-discharge, and compact fault signaling - making it optimal for space-constrained, standards-driven USB port power management where full feature integration reduces design risk.

Availability

AP2822AKBTR-G1 is available at Aetrix Electronics and suitable for USB bus power switching, self-powered hub designs, and notebook peripheral port management requiring stable component supply and long-term industrial availability.

Supply support for AP2822AKBTR-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 series belongs to Diodes' high-side power switch product line, engineered specifically for USB-compliant hot-plug power distribution with integrated protection and minimal external components.

FAQ

What is the function of the FLAG pin on AP2822AKBTR-G1?

The FLAG pin is an open-drain fault indicator that pulls low during over-current or over-temperature events. It requires an external pull-up resistor to the host controller's logic rail and asserts within 5–15 ms of fault detection. Its deglitched design prevents false triggering from transient noise, enabling reliable USB controller fault response without additional filtering circuitry.

Does AP2822AKBTR-G1 support reverse current blocking?

Yes - the AP2822AKBTR-G1 blocks reverse current when disabled (I_REVERSE ≤ 1.0 µA max), preventing backfeed from V_OUT to V_IN. This is achieved via internal MOSFET channel control and ensures safe operation in battery-backed or dual-rail systems where V_OUT may exceed V_IN during power-loss scenarios.

How does the auto-discharge feature work, and is it configurable?

The AP2822AKBTR-G1 integrates a 100–200 Ω pull-down resistor between V_OUT and GND that activates automatically upon disable. This discharges downstream capacitance rapidly (typically <10 ms for 10 µF), meeting USB hot-unplug timing requirements. The feature is fixed per part variant - AP2822A–H include it; AP2822AN–HN omit it - and is not user-configurable.

Is AP2822AKBTR-G1 recommended for new designs?

No - Diodes Incorporated explicitly marks AP2822AKBTR-G1 as "NOT RECOMMENDED FOR NEW DESIGN" in its official datasheet (DS41399 Rev. 1–3). While fully functional and supported for existing production, designers should evaluate newer alternatives like the AP2822K-series or Diodes' AP283x family for enhanced efficiency, lower R_DS(ON), or extended temperature range in new projects.