Diodes Incorporated AP2822AKTR-G1

Overview

AP2822AKTR-G1 from BCD Semiconductor Manufacturing Limited is a 0.5A continuous-rated high-side power distribution switch with integrated N-channel MOSFET, charge pump, over-current and thermal protection, soft-start, and deglitched open-drain FLAG output - designed specifically for USB 2.0 bus-powered hub and peripheral power management where strict voltage-drop compliance (R_DS(ON) = 85 mΩ) and hot-plug reliability are required.

For engineers reviewing the AP2822AKTR-G1 datasheet, AP2822AKTR-G1 pinout, AP2822AKTR-G1 application, or AP2822AKTR-G1 equivalent, this device supports precise current-limit selection (0.5A variant), logic-level enable control (active-high), UVLO threshold of 2.2–3.0 V, and fault reporting via FLAG to host USB controllers in space-constrained SOT-23-5 layouts.

Technical Context

The AP2822AKTR-G1 implements a charge-pump-driven gate driver to fully enhance the internal N-channel MOSFET across its 2.7–5.5 V input range, enabling low R_DS(ON) without external bias. Its fold-back current limiting activates during short-to-ground faults, reducing I_SHORT to 0.7 A while maintaining thermal shutdown at 150 °C with 30 °C hysteresis.

It integrates deglitched FLAG signaling with 5–15 ms delay to suppress false fault assertions, and includes an internal pull-low resistor on VOUT during shutdown to prevent reverse current (I_REVERSE ≤ 1.0 µA) - critical for USB OTG and dual-role port designs requiring bidirectional isolation.

Key Specifications

Pinout & Package

SOT-23-5 package: 2.82 mm × 2.92 mm × 1.3 mm body, 0.95 mm lead pitch, gull-wing leads, RoHS-compliant "G1" green finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036IRHBR and TPS2051BDBVR, the AP2822AKTR-G1 delivers USB-specific performance (85 mΩ, fold-back, deglitched FLAG) in minimal SOT-23-5 footprint - making it optimal for discrete, fault-resilient USB power rail control where integration or relaxed specs are unacceptable.

Availability

AP2822AKTR-G1 is available at Aetrix Electronics and suitable for USB bus-powered hubs, notebook peripheral ports, and battery-charger circuits requiring stable component supply, green RoHS compliance, and long-term industrial availability.

Supply support for AP2822AKTR-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

BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC design house specializing in high-efficiency power management, USB interface, and mixed-signal solutions for consumer, computing, and industrial markets.

The AP2822 product line targets USB-compliant power distribution with integrated protection - engineered for compact, reliable, and specification-adherent implementation in space-constrained portable and embedded systems.

FAQ

What is the maximum allowable input voltage for AP2822AKTR-G1?

The absolute maximum VIN rating is 6.0 V, but the recommended operating range is 2.7 V to 5.5 V. Operation above 5.5 V risks permanent damage, while operation below 2.7 V triggers UVLO and disables the switch. The 2.2–3.0 V UVLO threshold ensures clean turn-on only when stable USB or regulated supply is present.

Does AP2822AKTR-G1 support reverse current blocking when disabled?

Yes. When EN is low, an internal 100–200 Ω pull-low resistor connects VOUT to GND, actively discharging output capacitance and preventing reverse current flow from VOUT to VIN. Measured reverse leakage is ≤1.0 µA at VOUT > VIN, eliminating need for external blocking diodes in USB OTG or dual-power-source designs.

How does the FLAG pin behave during over-current events?

The FLAG pin is an open-drain output that pulls low within 5–15 ms of sustained over-current detection (e.g., VOUT shorted to GND). It remains asserted until the fault clears and the device recovers - either automatically after current normalizes or manually via EN toggle. Deglitching prevents false triggers from brief inrush transients during normal startup.

Can AP2822AKTR-G1 be used with 3.3 V logic control signals?

Yes. The EN pin accepts 3.3 V as valid high-level input (VENH min = 1.6 V), and draws only ±1.0 µA input current. With 68 µA typical supply current and 1.0 µA max shutdown current, it interfaces directly with 3.3 V microcontrollers or USB controllers without level shifters or additional biasing components.