Diodes Incorporated AP22817AKAWT-7

Overview

AP22817AKAWT-7 from Diodes Incorporated is a 1.5A single-channel high-side load switch optimized for USB and hot-swap applications, featuring 75mΩ R_DS(ON), 2.7V–5.5V input range, integrated output discharge, reverse-current blocking, and active-low enable logic in a TSOT25 package. It delivers controlled power sequencing in ultrabooks and SSDs with auto-recovery overcurrent, short-circuit, and overtemperature protection.

For engineers reviewing the AP22817AKAWT-7 datasheet, AP22817AKAWT-7 pinout, AP22817AKAWT-7 application, or AP22817AKAWT-7 equivalent, key selection criteria include its 1.5A current limit, 6ms FLG deglitch timeout, soft-start rise time (2.1ms typ.), reverse-voltage trip point (70mV), and thermal shutdown threshold (+150°C).

Technical Context

The AP22817AKAWT-7 integrates an N-channel MOSFET with current-sense FET architecture for precise overcurrent detection without external resistors, enabling fast short-circuit response and auto-recovery behavior. Its UVLO (2.3V typ. rising, 180mV hysteresis) ensures safe turn-on only after stable rail establishment.

It implements bidirectional current sensing and thermal shutdown with +40°C hysteresis, coupled with a dedicated open-drain FLG output that asserts low after 6ms blanking upon fault detection. The internal discharge path (140–200Ω) actively discharges output capacitance when disabled, eliminating floating voltage on hot-removed peripherals.

Key Specifications

Pinout & Package

AP22817AKAWT-7 is housed in a RoHS-compliant, lead-free TSOT25 (SOT-25) package with matte tin-plated leads, 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 AP22816AKAWT-7, the AP22817AKAWT-7 provides 50% higher current capacity while maintaining identical footprint, protection features, and timing behavior - making it a direct upgrade for designs scaling from USB 2.0 to USB 3.0 loads. The TPL7407LPGEDR lacks high-side architecture, reverse-current blocking, and thermal protection, limiting it to low-risk signal-level applications.

Availability

AP22817AKAWT-7 is available at Aetrix Electronics and suitable for USB power delivery, SSD sequencing, and notebook rail isolation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for AP22817AKAWT-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-efficiency power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.

The AP22817AKAWT-7 belongs to Diodes' AP228xx family of integrated load switches, designed specifically for robust, low-component-count power gating in space-constrained USB and embedded storage applications.

FAQ

What is the maximum continuous output current supported by AP22817AKAWT-7?

The AP22817AKAWT-7 supports a continuous output current of 1.5A under recommended operating conditions (T_A ≤ +85°C, proper PCB copper area). This rating is validated across temperature and input voltage (2.7V–5.5V) with auto-recovery overcurrent protection engaging at 2.2A (min) to sustain reliability during transient overloads.

Does AP22817AKAWT-7 provide reverse-current protection, and how does it behave?

Yes - AP22817AKAWT-7 blocks reverse current when V_OUT exceeds V_IN by ≥70mV (typ.), turning off the internal MOSFET within 2–15ms. It limits reverse current to ≤350mA and automatically re-enables once the reverse condition is removed, ensuring protection during hot-swap events without manual intervention.

Can AP22817AKAWT-7 be used without external components for basic operation?

Yes - AP22817AKAWT-7 requires only five external components for full functionality: 1μF IN bypass, 0.1μF + ≥10μF OUT capacitors, pull-up on FLG, and optional EN pull-down. No external current-sense resistors, RC timers, or discharge FETs are needed due to full integration of soft-start, discharge, and deglitched fault reporting.

What thermal derating guidance applies to AP22817AKAWT-7 in a TSOT25 package?

In the TSOT25 package, AP22817AKAWT-7 has R_θJA = 123°C/W. At 1.5A and 75mΩ R_DS(ON), power dissipation is ~169mW, resulting in ~21°C junction rise above ambient. Derating begins above +85°C ambient; full 1.5A operation is guaranteed only up to +85°C with minimum recommended 1"×1" 2oz copper pad per JEDEC 51-7.