Diodes Incorporated AP22804AW5-7

Overview

AP22804AW5-7 from Diodes Incorporated is a single-channel, current-limited, high-side load switch optimized for USB and hot-swap applications. It features 50 mΩ R_DS(ON), 2.5 A continuous output current, active-high enable (A), and integrated reverse-current blocking, over-current/over-temperature/short-circuit protection with auto-recovery. It operates across 2.7 V to 5.5 V input and delivers controlled 2.1 ms typical rise time in SOT25 package.

For engineers reviewing the AP22804AW5-7 datasheet, AP22804AW5-7 pinout, AP22804AW5-7 application, or AP22804AW5-7 equivalent, key selection criteria include its 6 ms FLG deglitch timeout, 0.4 ms output discharge time, UVLO threshold at 2.0 V, and thermal shutdown at +140 °C - all critical for robust USB power rail control in ultrabooks and SSDs.

Technical Context

The AP22804AW5-7 integrates an N-channel MOSFET power switch with current-sense FET architecture, eliminating external sense resistors while maintaining precise 3.0 A over-current limit (typ) and 0.45 A short-circuit clamp. Its internal soft-start circuit enforces a 0.6 ms typical turn-on delay and 2.1 ms rise time under 4.7 µF load capacitance.

Protection logic combines dual-trigger fault detection: FLG asserts low after 6 ms deglitch upon over-current or over-temperature events, while reverse-voltage sensing disables the switch when V_OUT exceeds V_IN by ≥50 mV for ≥6 ms. Thermal hysteresis of +35 °C ensures stable cycling during sustained overload.

Key Specifications

Pinout & Package

AP22804AW5-7 is housed in a RoHS-compliant Green SOT25 (SC-74A) package with exposed pad recommended for GND connection to improve thermal dissipation. Pinout is validated per Diodes DS39137 Rev. 1–2, Figure 1 (SOT25 top view).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22915BYFPR and NCP45520MUTBG, AP22804AW5-7 uniquely balances USB-specific timing (6 ms FLG blanking, 0.4 ms discharge), reverse-current blocking, and compact SOT25 footprint - making it optimal for space-constrained, standards-compliant 5 V hot-swap designs.

Availability

AP22804AW5-7 is available at Aetrix Electronics and suitable for ultrabook power sequencing, USB 3.0 port switching, and SSD power enable applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for AP22804AW5-7 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.

AP22804AW5-7 belongs to Diodes' AP228xx family of integrated load switches, engineered specifically for USB-compliant hot-swap and power-rail sequencing in portable and embedded systems with stringent size and thermal constraints.

FAQ

What is the maximum continuous output current rating for AP22804AW5-7?

The AP22804AW5-7 is rated for 2.5 A continuous output current at T_A = +25°C with proper PCB thermal design. Derating applies above +25°C ambient: at +85°C, maximum sustainable current drops to approximately 1.8 A based on R_θJA = 175 °C/W and 50 mΩ R_DS(ON). This rating assumes ≥10 µF output capacitance and adequate copper pour on GND layer.

Does AP22804AW5-7 require external components for basic operation?

No external components are required for core functionality: IN and OUT pins each need only their specified ceramic bypass capacitors (1 µF and 0.1 µF + ≥10 µF), and FLG requires only a pull-up resistor if interfaced with open-drain logic. The 6 ms deglitch, soft-start, discharge path, UVLO, and protection functions are fully integrated - eliminating external timers, resistors, or FETs.

How does the reverse-current protection operate in AP22804AW5-7?

Reverse-current protection activates when V_OUT exceeds V_IN by ≥50 mV for ≥6 ms, turning off the internal N-MOSFET to block >400 mA reverse current. Recovery occurs automatically when V_OUT falls below V_IN + 25 mV. This function is independent of EN state and operates during both enabled and disabled conditions.

Can AP22804AW5-7 be used in 3.3 V-only systems?

Yes - the 2.7 V to 5.5 V input range fully covers 3.3 V nominal rails. At V_IN = 3.3 V, R_DS(ON) increases slightly (~55 mΩ), and the 2.5 A current limit remains valid. UVLO releases at ~2.0 V, ensuring reliable turn-on even with 3.3 V supply tolerance (±10%). Rise time extends to ~2.5 ms, still within USB and SSD timing budgets.