Diodes Incorporated AP2501MP-13

Overview

AP2501MP-13 from Diodes Incorporated is a single-channel, current-limited high-side power switch optimized for USB and hot-swap applications. It features 70 mΩ typical R_DS(ON), 3.7 A typical current limit, 2 µs short-circuit response time, and integrated output discharge. It operates from 2.7 V to 5.5 V input and delivers up to 2.5 A continuous load current in MSOP-8EP package.

For engineers reviewing the AP2501MP-13 datasheet, AP2501MP-13 pinout, AP2501MP-13 application, or AP2501MP-13 equivalent, key selection criteria include enable polarity (active-low), thermal shutdown threshold (+140°C), UVLO hysteresis (50 mV), FLG deglitch timing (7 ms typ), and SO-8/MSOP-8EP/U-DFN package compatibility for space-constrained USB power delivery designs.

Technical Context

The AP2501MP-13 integrates a P-channel MOSFET high-side switch with current-sense FET-based over-current detection, eliminating external sense resistors. Its internal soft-start circuit enforces a 0.6 ms typical output rise time to suppress inrush current into heavy capacitive loads.

Thermal protection uses die-temperature sensing with +140°C trip threshold and +20°C hysteresis, enabling automatic cycling during sustained overload. The open-drain FLG pin reports both over-current and over-temperature faults after 7 ms blanking to reject transient false triggers.

Key Specifications

Pinout & Package

AP2501MP-13 is supplied in MSOP-8EP (exposed pad) package, offering enhanced thermal performance (θ_JA = 92 °C/W) versus standard MSOP-8. The exposed pad must be soldered to GND for optimal heat dissipation and EMI control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2501MP-13, the AP2501M8-13 trades thermal performance for simpler assembly, while the TPS22965DRLR offers lower R_DS(ON) but increases design effort with external fault conditioning and no discharge capability - making AP2501MP-13 optimal for USB-compliant, space-constrained, thermally demanding hot-swap nodes.

Availability

AP2501MP-13 is available at Aetrix Electronics and suitable for USB hub power management, laptop docking stations, set-top box front-panel ports, and industrial embedded controllers requiring stable component supply, RoHS-compliant "Green" packaging, and production-ready tape-and-reel logistics.

Supply support for AP2501MP-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, industrial, and computing markets.

The AP2501/AP2511 family targets USB-compliant hot-swap power distribution, delivering integrated protection (over-current, thermal, UVLO, reverse blocking) and ease-of-use (no external components required) in miniature surface-mount packages.

FAQ

What is the function of the NC pin on AP2501MP-13?

The NC (No Connection) pin is internally unconnected but electrically and mechanically recommended to be tied to the OUT net. This improves mechanical stability during reflow, reduces parasitic inductance in high-di/dt switching paths, and minimizes radiated emissions by providing a low-impedance return path adjacent to the high-current OUT pins.

Does AP2501MP-13 require an external pull-up resistor on the FLG pin?

No. The FLG pin is an open-drain output with internal deglitch logic and does not require an external pull-up resistor for basic fault reporting. However, if interfacing with a microcontroller GPIO that lacks internal pull-up or requires specific voltage translation, a 10 kΩ external pull-up to the host logic rail (e.g., 3.3 V) is recommended for robust signal integrity.

Can AP2501MP-13 be used in dual-purpose HDMI/MHL ports?

No. Diodes Incorporated explicitly advises against using AP2501MP-13 in dual-purpose ports like HDMI/MHL where the output may be subjected to constant external voltage while the switch is disabled. Its integrated discharge function would continuously drain peripheral batteries, and sustained reverse bias risks overstressing the internal N-MOS discharge transistor.

How does the 7 ms FLG deglitch time affect system fault response?

The 7 ms deglitch window prevents false FLG assertion during benign transients such as output capacitor charging (t_DIS = 0.6 ms) or brief inrush surges. True over-current or over-temperature faults must persist beyond 7 ms to trigger FLG, ensuring only sustained faults halt system operation - reducing unnecessary resets in dynamic load environments.