Diodes Incorporated AP22811AM8-13

Overview

AP22811AM8-13 from Diodes Incorporated is a single-channel, current-limited, high-side load switch optimized for USB and hot-swap applications. It features 50 mΩ R_DS(ON), 2.7–5.5 V input range, integrated output discharge, reverse-voltage protection (50 mV trip), and 6 ms deglitched FLG fault reporting - enabling robust power sequencing in Ultrabook and SSD systems.

For engineers reviewing the AP22811AM8-13 datasheet, AP22811AM8-13 pinout, AP22811AM8-13 application, or AP22811AM8-13 equivalent, key selection criteria include its active-high enable variant (A-suffix), MSOP-8 thermal performance (R_θJA = 165 °C/W), auto-recovering over-current/short-circuit/over-temperature protection, and controlled 2.1 ms typical rise time under 3.3 V input with 4.7 µF load.

Technical Context

The AP22811AM8-13 integrates an N-channel MOSFET with precision current-sense FET architecture to deliver 2.7 A over-current limit (typ.) and 300 mA short-circuit clamp without external sensing resistors. Its UVLO threshold is 2.0 V (rising) with 180 mV hysteresis, ensuring reliable turn-on only after stable rail establishment.

Thermal shutdown triggers at +140 °C with +35 °C hysteresis, enabling safe cycling during sustained overload. The FLG open-drain output asserts low after 6 ms deglitch upon over-current or over-temperature events, eliminating false trips from capacitive inrush transients.

Key Specifications

Pinout & Package

AP22811AM8-13 is housed in a thermally efficient, RoHS-compliant MSOP-8 package (3.0 mm × 3.0 mm × 1.1 mm), rated for 165 °C/W junction-to-ambient thermal resistance on standard FR-4 PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP22811AW5-7, the AP22811AM8-13 offers superior thermal management in high-power-density designs due to MSOP-8's larger copper exposure, while TPS22915DBVR trades critical protection features for lower quiescent current - making it unsuitable for USB or SSD applications requiring reverse-voltage immunity.

Availability

AP22811AM8-13 is available at Aetrix Electronics and suitable for Ultrabook power sequencing, USB peripheral hot-swap, and SSD power enable applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP22811AM8-13 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 computing, industrial, and consumer markets.

The AP22811 belongs to Diodes' load switch product line, engineered specifically for USB-compliant hot-swap and high-capacitance power distribution - emphasizing integrated protection, zero-external-component operation, and automotive-grade reliability testing.

FAQ

What is the function of the FLG pin on AP22811AM8-13?

The FLG pin is an open-drain fault indicator that asserts low after a 6 ms deglitch timeout when over-current or over-temperature conditions occur. It remains low until both faults clear, and requires an external pull-up resistor. Unlike comparator-based flags, it does not report UVLO or reverse-voltage events - only thermal and current-limit faults.

Does AP22811AM8-13 provide reverse-current blocking during disable?

Yes - the device implements active reverse-voltage protection that disables the internal MOSFET when V_OUT exceeds V_IN by 50 mV for 6 ms, preventing backfeed current. This is distinct from passive body-diode blocking and operates independently of enable state, protecting against battery-backup or multi-rail backfeeding scenarios.

Can AP22811AM8-13 drive a 100 µF output capacitor safely?

Yes - the datasheet explicitly specifies ≥100 µF low-ESR electrolytic/tantalum (or 10 µF MLCC) at the output for hot-plug applications. Combined with its 2.1 ms typical rise time and 2.7 A current limit, it safely charges this capacitance without exceeding SOA limits or triggering false over-current faults due to the 6 ms FLG deglitch.

Is the EN/EN pin of AP22811AM8-13 compatible with 1.8 V GPIO?

No - the AP22811AM8-13 is the A-suffix (active-high) variant requiring V_IH ≥1.5 V (min) for reliable enable. A 1.8 V GPIO meets this threshold, but marginal 1.2 V logic families do not. For 1.2 V systems, the B-suffix (active-low) version or level-shifting is required, as VIH is not guaranteed below 1.5 V across temperature and process variation.