Diodes Incorporated AP2511SN-7

Overview

AP2511SN-7 from Diodes Incorporated is a single-channel, active-high enable, current-limited high-side power switch optimized for USB and hot-swap applications. It delivers 2.5A continuous load current with 3.7A typical current limiting, 70mΩ typical R_DS(ON), and integrated output discharge. Used in USB ports of laptops and docking stations to protect against short circuits and inrush currents.

For engineers reviewing the AP2511SN-7 datasheet, AP2511SN-7 pinout, AP2511SN-7 application, or AP2511SN-7 equivalent, this page provides verified electrical parameters, thermal protection behavior, FLG fault reporting timing, and package-specific layout guidance for U-DFN2020-6.

Technical Context

The AP2511SN-7 integrates a P-channel MOSFET high-side switch with current-sense FET-based over-current detection, thermal shutdown at +140°C (20°C hysteresis), and UVLO activation at 2.0V (±0.4V hysteresis). Its 7ms deglitch on the open-drain FLG pin prevents false fault reporting during capacitive load turn-on transients.

It implements soft-start via controlled gate drive, achieving 0.6ms typical output rise time with 1µF load and 5Ω resistance. The device supports reverse current blocking and features an N-MOS discharge transistor activated only when disabled, providing 100Ω typical discharge resistance and 0.6ms discharge time to <0.5V.

Key Specifications

Pinout & Package

AP2511SN-7 is housed in a 6-pin U-DFN2020-6 package (2.0mm × 2.0mm, 0.5mm pitch) with wettable flank leads and no exposed pad. Pin 1 is IN, Pin 2 is GND, Pin 3 is EN (active high), Pin 4 is FLG (open-drain fault flag), Pin 5 is OUT, and Pin 6 is NC (tied internally to OUT).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2501SN-7, AP2511SN-7 offers direct compatibility with active-high microcontroller GPIOs; compared with TCK112G, it eliminates need for external discharge components while delivering lower conduction loss and faster fault response.

Availability

AP2511SN-7 is available at Aetrix Electronics and suitable for USB 3.0 port protection, laptop docking station power management, and set-top box hub designs requiring stable component supply, RoHS-compliant green packaging, and UL recognition.

Supply support for AP2511SN-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 power management, signal integrity, and protection solutions for consumer, industrial, and computing markets.

The AP25xx family targets USB and hot-swap applications, delivering integrated protection (over-current, thermal, UVLO, reverse-blocking) in space-constrained packages like U-DFN2020-6.

FAQ

What is the maximum continuous load current for AP2511SN-7?

The AP2511SN-7 supports 2.5A maximum continuous load current per its Recommended Operating Conditions table. This rating assumes proper PCB thermal design (e.g., 1"×1" FR-4 with thermal vias) and ambient temperature ≤+85°C. At higher temperatures or with inadequate copper area, derating applies per θ_JA = 90°C/W.

Does AP2511SN-7 require external components for fault reporting?

No. The FLG pin is an open-drain output with built-in 7ms deglitch timing; no external RC network is needed to prevent false over-current reporting. A pull-up resistor (typically 10kΩ to 3.3V or 5V) is required externally to read the fault state, but no timing or filtering components are necessary.

How does the output discharge function operate?

The discharge function activates only when EN is low (device disabled). An internal N-MOS transistor connects OUT to GND through ~100Ω resistance, discharging output capacitance to <0.5V in ~0.6ms. It remains inactive during normal operation and does not interfere with load switching dynamics.

Can AP2511SN-7 be used in dual-purpose HDMI/MHL ports?

No. Diodes' Application Note explicitly warns against use in dual-purpose ports (e.g., HDMI/MHL) where the output may be back-driven by a peripheral's battery. The integrated discharge function would continuously drain the peripheral battery when disabled, risking overstress of the discharge transistor and violating MHL power architecture requirements.