Diodes Incorporated AP22816AKAWT-7

Overview

AP22816AKAWT-7 from Diodes Incorporated is a single-channel, 1.0A current-limited high-side load switch optimized for USB 2.0 hot-swap applications, featuring 75mΩ R_DS(ON), 0.6ms typical rise time, integrated output discharge, reverse-current blocking, and active-low enable logic in TSOT25 package. It delivers robust protection including overcurrent, short-circuit, overtemperature, and UVLO in ultrabook power sequencing.

For engineers reviewing the AP22816AKAWT-7 datasheet, AP22816AKAWT-7 pinout, AP22816AKAWT-7 application, or AP22816AKAWT-7 equivalent, this device supports precise hot-plug control with 6ms FLG deglitching, reverse-voltage trip at 35–105mV, and thermal shutdown at +150°C - critical for USB port power management and SSD rail switching.

Technical Context

The AP22816AKAWT-7 integrates an N-channel MOSFET with current-sense FET-based overcurrent detection and thermal foldback, enabling auto-recovery protection without external components. Its UVLO threshold (2.3V typ.) and hysteresis (180mV) ensure stable turn-on during input ramp-up.

It implements bidirectional current sensing for reverse-current blocking and uses a dedicated open-drain FLG pin with 6ms blanking to suppress false fault reporting during capacitive inrush. The internal discharge FET provides 140–200Ω resistive path (t_DIS = 0.4ms typ.) when disabled.

Key Specifications

Pinout & Package

AP22816AKAWT-7 is housed in a RoHS-compliant, lead-free TSOT25 (SOT-25) package with matte tin-plated leads (e3 finish), moisture sensitivity level 1, and thermal resistance R_θJA = 123°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCK107AG and TPS22916BLYR, AP22816AKAWT-7 uniquely integrates reverse-voltage trip, output discharge, and 6ms FLG deglitch in a single TSOT25 package - reducing system-level component count and simplifying USB 2.0 port design without sacrificing protection integrity.

Availability

AP22816AKAWT-7 is available at Aetrix Electronics and suitable for USB 2.0 port switching, ultrabook power sequencing, and SSD rail control requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.

Supply support for AP22816AKAWT-7 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 high-reliability power management, signal integrity, and protection solutions for computing, consumer, and industrial markets.

AP22816AKAWT-7 belongs to Diodes' AP228xx family of load switches, designed specifically for USB-compliant hot-swap and power-rail sequencing applications where compact size, integrated protection, and low quiescent current (<80µA) are essential.

FAQ

What is the function of the FLG pin on AP22816AKAWT-7?

The FLG pin is an open-drain fault indicator that pulls low when overcurrent or overtemperature conditions occur, after a 6ms deglitch timeout. It remains asserted until both faults clear. Its 30–60Ω on-resistance allows direct connection to a microcontroller GPIO with a pull-up resistor, enabling real-time system-level fault monitoring without external logic.

Does AP22816AKAWT-7 support reverse-current blocking, and how does it work?

Yes - it blocks reverse current when V_OUT exceeds V_IN by 35–105mV for ≥6ms, triggering automatic MOSFET turn-off. This prevents backfeed from downstream powered circuits into the host supply, a critical requirement for USB OTG and multi-rail systems where output voltage may transiently exceed input.

Can AP22816AKAWT-7 be used with 3.3V input, and what is its minimum operating voltage?

Yes - it operates across 2.7V to 5.5V input range. At 3.3V, R_DS(ON) remains ≤95mΩ, and all protections (UVLO, overcurrent, thermal) remain fully functional. Its UVLO activates at 2.3V (typ.), ensuring reliable operation down to 2.7V nominal, making it suitable for single-cell Li-ion (3.0–3.6V) and 3.3V system rails.

How does the integrated discharge function operate, and what is its design impact?

When EN is de-asserted, an internal 140–200Ω discharge path connects OUT to GND, discharging output capacitance to <0.5V in 0.4ms (typ.). This eliminates floating outputs and prevents unintended wake-up or latch-up in downstream circuits, removing need for external bleed resistors and simplifying layout in space-constrained USB and SSD applications.