Diodes Incorporated AP2511FGE-7

Overview

AP2511FGE-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, 3.7A typical current limiting, 70mΩ typical R_DS(ON) at 5V, 2µs short-circuit response time, and integrated output discharge. It operates across 2.7V–5.5V input and delivers up to 2.5A continuous load current in U-DFN3030-8 (Type E) package for USB port protection in laptops and docking stations.

For engineers reviewing the AP2511FGE-7 datasheet, AP2511FGE-7 pinout, AP2511FGE-7 application, or AP2511FGE-7 equivalent, key selection criteria include enable polarity (active-high), thermal shutdown threshold (+140°C), 7ms FLG deglitch timing, reverse current blocking capability, and SO-8/MSOP-8/U-DFN3030-8 package compatibility for layout-constrained USB power delivery designs.

Technical Context

The AP2511FGE-7 implements a P-channel MOSFET high-side switch with embedded current-sense FET architecture-eliminating external sense resistors while maintaining low conduction loss. Its UVLO (2.0V typ) and 20°C thermal hysteresis ensure stable turn-on/turn-off sequencing during brown-out and fault recovery.

It integrates dual protection logic: over-current detection triggers immediate current limiting (not shutdown), while thermal sensing initiates cyclical shutdown/restart above +140°C. The open-drain FLG output combines both fault types with 7ms blanking to suppress false reporting from capacitive inrush transients.

Key Specifications

Pinout & Package

AP2511FGE-7 uses the U-DFN3030-8 (Type E) package: 3.0mm × 3.0mm × 0.55mm body, 0.5mm pitch, exposed thermal pad (must be soldered to GND plane). Pin 1 is NC (no internal connection); all IN and OUT pins are paralleled internally and require external tie-together.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCK107AG and TPS22965, AP2511FGE-7 uniquely combines active-high enable, integrated discharge, thermal hysteresis, and USB-optimized 2µs fault response - making it the only option that satisfies full hot-swap robustness without external components.

Availability

AP2511FGE-7 is available at Aetrix Electronics and suitable for USB port protection, laptop docking station power management, and set-top box hub applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant "Green" packaging.

Supply support for AP2511FGE-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, industrial, and computing markets.

The AP25xx family targets USB-compliant hot-swap power distribution, delivering integrated protection (over-current, thermal, UVLO, reverse blocking) in space-constrained packages for next-generation portable and docked computing platforms.

FAQ

What is the maximum continuous load current supported by AP2511FGE-7?

The AP2511FGE-7 supports 2.5A maximum continuous load current per its Recommended Operating Conditions table. This rating assumes proper PCB thermal design (e.g., U-DFN3030-8EP with thermal vias to ground plane) and ambient temperature ≤+70°C at VIN ≤4.1V. At full 5.5V input and +85°C ambient, derating applies per thermal resistance (θ_JA = 84°C/W).

Does AP2511FGE-7 require external components for basic operation?

No external components are required for core functionality: a 0.1µF ceramic capacitor from IN to GND is mandatory for stability, but the FLG deglitch, output discharge, UVLO, and thermal protection are fully integrated. Unlike competing switches, it needs no external current-sense resistor, discharge FET, or pull-up/pull-down resistors on EN or FLG.

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

Upon short-circuit detection, the FLG pin remains inactive for 7ms (typical deglitch period), then asserts low as an open-drain signal. It stays low until both over-current and over-temperature conditions clear. If the short persists, thermal cycling causes repeated FLG assertion/deassertion synchronized with junction temperature crossing +140°C/+120°C thresholds.

Can AP2511FGE-7 be used in dual-purpose ports like MHL/HDMI with charging?

No - Diodes' Application Note explicitly warns against use in dual-purpose ports (e.g., HDMI/MHL) where output voltage is externally driven while the switch is disabled. The integrated discharge path would continuously drain peripheral batteries, and reverse bias stress could overstress the internal N-MOS discharge transistor.