Diodes Incorporated AP2311AMP-13

Overview

AP2311AMP-13 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 2.0A continuous load current with 2.5A accurate current limiting, 70mΩ typical R_DS(ON) at 5V, fast 2µs short-circuit response, and integrated output discharge. It operates across 2.7V–5.5V input and supports LCD TVs, docking stations, and USB-powered hubs.

For engineers reviewing the AP2311AMP-13 datasheet, AP2311AMP-13 pinout, AP2311AMP-13 application, or AP2311AMP-13 equivalent, key selection criteria include enable polarity (active-high), thermal shutdown threshold (+140°C), FLG blanking time (7ms typ), and MSOP-8EP package with exposed thermal pad - all critical for robust hot-swap power rail design.

Technical Context

The AP2311AMP-13 integrates a P-channel MOSFET high-side switch with precision current sensing via a dedicated sense FET, enabling accurate 2.5A over-current trip without added series resistance. Its UVLO (2.0V threshold with 50mV hysteresis) ensures safe turn-on only after stable input voltage is established.

Thermal protection uses die-temperature monitoring to disable the switch at +140°C with +20°C hysteresis, enabling automatic recovery after fault removal. The open-drain FLG output reports both over-current and over-temperature faults with built-in 7ms deglitch, eliminating false triggers during capacitive load discharge.

Key Specifications

Pinout & Package

AP2311AMP-13 is housed in an MSOP-8EP (Mini Small Outline Package with Exposed Pad) - an 8-pin surface-mount package with thermal enhancement via an externally soldered exposed pad connected to GND for improved θ_JA (92°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2301AMP-13, AP2311AMP-13 eliminates need for external inverters in active-high control systems; versus TCK112G, it trades slightly higher R_DS(ON) for integrated discharge and tighter FLG timing - critical for USB compliance and capacitive load management.

Availability

AP2311AMP-13 is available at Aetrix Electronics and suitable for USB hub designs, docking station power distribution, LCD monitor hot-swap interfaces, and set-top box peripheral ports requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for AP2311AMP-13 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 industrial, computing, and consumer markets.

The AP2311A belongs to Diodes' high-side power switch product line, engineered specifically for USB-compliant hot-swap and load-switching applications demanding precise current limiting, fast fault response, and integrated thermal and electrical protection.

FAQ

What is the maximum continuous output current rating for AP2311AMP-13?

The AP2311AMP-13 is rated for 2.0A maximum continuous load current under recommended operating conditions (T_A ≤ +85°C, proper PCB thermal layout). Its 2.5A current limit activates during overload, but sustained operation above 2.0A requires verification of junction temperature using θ_JA = 92°C/W and actual power dissipation.

Does AP2311AMP-13 require external components for basic operation?

No external components are required for core functionality. A 0.1µF ceramic capacitor between IN and GND is mandatory for stability. Additional 120µF electrolytic input/output capacitors are recommended for heavy loads, and no pull-up/pull-down resistors are needed on EN or FLG due to internal design.

How does the FLG output behave during a short-circuit event?

When a short circuit occurs, the FLG pin asserts low after a nominal 7ms deglitch period and remains low until both over-current and over-temperature conditions are fully cleared. During repeated short-circuit cycling, FLG stays low continuously if faults recur within the blanking window, providing unambiguous system-level fault indication.

Can AP2311AMP-13 be used in dual-purpose HDMI/MHL ports?

Yes - its integrated discharge function and reverse current blocking make it suitable for dual-purpose ports. However, ensure VIN ramps to ≥2.7V before enabling EN, and verify that peripheral battery discharge during device disablement aligns with system power architecture, as the discharge path connects directly to the output node.