Diodes Incorporated AP2501FGE-7

Overview

AP2501FGE-7 from Diodes Incorporated is a single-channel, 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. It operates across 2.7V–5.5V input voltage and provides reverse current blocking, over-current, over-temperature, short-circuit, and UVLO protection - deployed in LCD TVs, docking stations, and USB HUBs.

For engineers reviewing the AP2501FGE-7 datasheet, AP2501FGE-7 pinout, AP2501FGE-7 application, or AP2501FGE-7 equivalent, key selection considerations include active-low enable logic, U-DFN3030-8 (Type E) package thermal performance (θ_JA = 84°C/W), 2µs short-circuit response time, and 7ms FLG deglitch timing to avoid false fault reporting in capacitive-load environments.

Technical Context

The AP2501FGE-7 integrates a P-channel MOSFET high-side switch with embedded current-sense FET architecture, enabling accurate 3.7A current limiting without external sense resistors. Its control loop includes UVLO (2.0V threshold, 50mV hysteresis), soft-start (0.6ms typical rise time), and thermal shutdown at +140°C with +20°C hysteresis.

It implements dual-stage fault handling: immediate current limiting upon overload detection (2µs response), followed by thermal shutdown if sustained; the open-drain FLG pin reports both over-current and over-temperature events after 7ms deglitch filtering, eliminating need for external RC debouncing.

Key Specifications

Pinout & Package

AP2501FGE-7 is housed in a 3.0mm × 3.0mm × 0.55mm U-DFN3030-8 (Type E) package with exposed thermal pad. The package supports high thermal efficiency (θ_JA = 84°C/W) when soldered to PCB thermal vias and ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2511FGE-7, AP2501FGE-7 offers identical protection and thermal performance but simplifies interface to microcontrollers with active-low reset outputs; versus TCK112G, it delivers 1.7× higher current, 42% lower conduction loss, and eliminates external discharge circuitry - directly reducing board area and failure points.

Availability

AP2501FGE-7 is available at Aetrix Electronics and suitable for USB power delivery, LCD TV backlight control, and set-top box hub protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant "Green" packaging.

Supply support for AP2501FGE-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 AP2501 belongs to Diodes' USB Power Switch product line, designed specifically to replace discrete high-side MOSFET solutions in space-constrained, thermally demanding hot-swap applications - emphasizing integration, fault resilience, and qualification to USB compliance standards.

FAQ

What is the maximum continuous output current supported by AP2501FGE-7?

The AP2501FGE-7 is rated for 2.5A continuous load current under recommended operating conditions (T_A ≤ +85°C, V_IN = 5.0V). This rating assumes proper PCB thermal design using the exposed pad and thermal vias per Diodes' layout guidelines. At elevated ambient temperatures or reduced input voltage, derating applies - e.g., full 2.5A is limited to T_A ≤ +70°C when V_IN ≤ 4.1V.

Does AP2501FGE-7 require external components for short-circuit protection?

No. AP2501FGE-7 integrates all protection functions: current limiting (3.7A typ), 2µs short-circuit response, 7ms FLG deglitch, thermal shutdown (+140°C), and UVLO. Only two external components are mandatory: a 0.1µF ceramic capacitor from IN to GND, and a pull-up resistor on FLG if interfacing with a microcontroller input. No external sense resistor, discharge FET, or RC filter is needed.

Can AP2501FGE-7 be used in dual-purpose HDMI/MHL ports?

No. Diodes explicitly advises against using AP2501FGE-7 in dual-purpose ports (e.g., HDMI/MHL) where the output may be subjected to constant external voltage while the device is disabled. Its integrated discharge function will continuously sink current from such a voltage source, overstressing the internal N-MOS discharge transistor and potentially causing premature failure.

How does the FLG pin behave during thermal shutdown?

The FLG pin goes low (active) after a nominal 7ms deglitch period whenever either over-current or over-temperature conditions occur. During thermal shutdown cycling - where the device repeatedly turns off at +140°C and re-enables after cooling ~20°C - FLG remains asserted low until both fault conditions are fully cleared and the device stabilizes in normal operation for >7ms. It does not pulse during thermal cycling.