Diodes Incorporated AP2511AM8-13

Overview

AP2511AM8-13 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 2.5A continuous load current, features 70mΩ typical R_DS(ON), 2µs short-circuit response time, integrated output discharge, and operates across 2.7V–5.5V input voltage range - enabling robust power delivery in laptop USB ports and set-top box peripheral rails.

For engineers reviewing the AP2511AM8-13 datasheet, AP2511AM8-13 pinout, AP2511AM8-13 application, or AP2511AM8-13 equivalent, key selection criteria include enable polarity (active high), thermal shutdown threshold (+140°C), FLG deglitch timing (7ms), reverse current blocking capability, and U-DFN3030-8 package compatibility with high-density PCB layouts.

Technical Context

The AP2511AM8-13 integrates a P-channel MOSFET high-side switch with precision current sensing, thermal monitoring, and UVLO circuitry. Its internal architecture includes a dedicated N-MOS discharge transistor activated upon disable, a deglitched open-drain FLG output tied to both overcurrent and overtemperature events, and soft-start control that enforces 0.6ms typical output rise time.

It implements dual-stage protection: immediate current limiting at 3.7A (typ) during overload, followed by thermal shutdown at +140°C with +20°C hysteresis. The device supports heavy capacitive loads up to 120µF and blocks reverse current when disabled, eliminating external diode requirements in bidirectional power paths.

Key Specifications

Pinout & Package

AP2511AM8-13 is packaged in MSOP-8 (8-pin mini small outline package) with exposed thermal pad. This thermally enhanced package supports high-current operation in space-constrained designs and requires soldering the exposed pad to PCB ground plane for optimal θ_JA = 130°C/W performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2501AM8-13, AP2511AM8-13 offers native compatibility with standard GPIO high-enable logic, while TCK112G,LF trades protection features for lower cost and smaller footprint - making AP2511AM8-13 optimal for USB-compliant, thermally demanding, and hot-swap-critical designs.

Availability

AP2511AM8-13 is available at Aetrix Electronics and suitable for USB 3.0 port power management, laptop docking station rail control, and set-top box peripheral hub applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for AP2511AM8-13 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 consumer, computing, and industrial markets.

The AP25xx family targets USB-compliant hot-swap power distribution, delivering integrated protection (overcurrent, thermal, UVLO, reverse blocking) and ease-of-use features (discharge, deglitched flag) in miniature surface-mount packages.

FAQ

What is the function of the NC pin on AP2511AM8-13?

Pin 8 is designated NC (No Connection) and has no internal electrical connection. Diodes Incorporated recommends tying it to the OUT net for mechanical reinforcement and improved EMI performance. Leaving it floating does not affect functionality but may reduce board-level robustness during thermal cycling or vibration.

Does AP2511AM8-13 require an external pull-up resistor on the FLG pin?

Yes - FLG is an open-drain output and requires an external pull-up resistor (typically 4.7kΩ to 5V or 3.3V) to generate a valid logic-high state when no fault is present. Without it, FLG remains indeterminate during normal operation and cannot reliably signal overcurrent or thermal events to the host microcontroller.

Can AP2511AM8-13 be used in dual-purpose HDMI/MHL ports?

No - Diodes' Application Note explicitly warns against use in dual-purpose ports (e.g., HDMI/MHL) due to uncontrolled discharge of peripheral batteries during disable states and potential overstress of the internal discharge MOSFET under constant output voltage bias. Dedicated MHL-compliant switches with isolated discharge control are required instead.

How does the 7ms FLG deglitch timer prevent false fault reporting?

The 7ms deglitch timer ignores transient overcurrent events shorter than ~4ms (with 7ms typical blanking). This suppresses false FLG assertions caused by inrush into large output capacitors (e.g., 120µF) or brief load transients, ensuring only sustained faults trigger system-level fault handling - eliminating need for external RC filtering or firmware debouncing.