Diodes Incorporated AP2411SN-7

Overview

AP2411SN-7 from Diodes Incorporated is a single-channel, current-limited, high-side power switch optimized for USB and hot-swap applications. It features active-high enable, 2.5A accurate current limiting, 70mΩ typical R_DS(ON), 2µs short-circuit response time, and integrated output discharge. It operates from 2.7V to 5.5V input and latches off after overcurrent detection with 7ms deglitch, serving as a robust protection solution in laptop USB ports.

For engineers reviewing the AP2411SN-7 datasheet, AP2411SN-7 pinout, AP2411SN-7 application, or AP2411SN-7 equivalent, key selection considerations include latch-off behavior under fault, active-high EN polarity, U-DFN2020-6 thermal performance, and compatibility with heavy capacitive loads in USB-powered peripherals.

Technical Context

The AP2411SN-7 integrates an N-channel MOSFET with precision current-sense circuitry to enforce a 2.5A ±0.45A current limit during overload or short-circuit events. Its 2µs response time enables rapid current clamping before system damage occurs.

It implements dual-protection logic: overcurrent triggers a 7ms deglitch timer before latching off, while thermal shutdown activates at 140°C with 20°C hysteresis. The FLG pin reports both faults via open-drain output with built-in blanking, eliminating external filtering components.

Key Specifications

Pinout & Package

AP2411SN-7 is housed in a 2.0mm × 2.0mm, 0.5mm pitch, 6-pin U-DFN2020-6 package with exposed thermal pad. The package supports high-density PCB layouts and provides low θ_JA = 90°C/W with proper thermal vias to GND plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2411SN-7, AP2401SN-7 offers identical protection but demands inverted EN drive, while TCK112G,LF trades latch-off safety for auto-retry and sacrifices thermal performance-making AP2411SN-7 optimal for USB-compliant, fault-isolated designs requiring deterministic shutdown.

Availability

AP2411SN-7 is available at Aetrix Electronics and suitable for USB 3.0 hub port protection, laptop ExpressCard slot power control, and set-top box HDMI hot-plug detection requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for AP2411SN-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 consumer, computing, and industrial markets.

The AP24xx family targets USB-compliant hot-swap and load-switch applications, emphasizing latch-off fault containment, minimal external components, and compact packaging for space-constrained portable electronics.

FAQ

What is the purpose of the 7ms deglitch time on the FLG pin?

The 7ms deglitch time prevents false fault reporting during transient inrush events-such as connecting a 120µF load capacitor-by requiring sustained overcurrent or overtemperature for ≥7ms before asserting FLG and latching off. This eliminates need for external RC filters while maintaining robustness against momentary shorts.

Can AP2411SN-7 be used with a 3.3V-only system without level shifting?

Yes. Its EN pin accepts VIH ≥2V and VIL ≤0.8V, making it directly compatible with 3.3V CMOS logic. With 2.7V minimum input voltage, it operates reliably across full 3.3V rail tolerance (±10%), and its 70mΩ R_DS(ON) ensures <220mW loss at 2A, supporting thermally tight 2×2mm layouts.

How does the output discharge function behave during normal operation?

The discharge function activates only when EN is de-asserted (logic low) or during power-up/power-down when VIN falls below UVLO (≈2.0V). It remains inactive during normal enabled operation. The 100Ω internal path discharges output capacitance to <0.5V within 0.6ms, ensuring no backfeed into upstream rails when disabled.

Is the exposed pad on the U-DFN2020-6 package electrically connected?

No. The exposed pad is thermally connected only-it must be soldered to a dedicated GND copper pour with ≥4 thermal vias for optimal θ_JA (90°C/W), but it is not an electrical ground path. Using it as such risks compromising thermal performance and violating internal isolation between die and pad.