Diodes Incorporated AP2182SG-13

Overview

AP2182SG-13 from Diodes Incorporated is a dual-channel, active-low enable, high-side USB power switch with 2.1A current limiting, 115mΩ on-resistance (MSOP-8EP), and integrated short-circuit/thermal protection for hot-swap applications. It operates from 2.7V to 5.5V input, features 7ms deglitched open-drain fault flags (FLG1/FLG2), and supports USB 2.0-compliant port power control in laptops and docking stations.

For engineers reviewing the AP2182SG-13 datasheet, AP2182SG-13 pinout, AP2182SG-13 application, or AP2182SG-13 equivalent, key selection criteria include enable polarity (active-low), dual independent channel control, thermal shutdown threshold (+140°C), UVLO trip (1.9V typ), and SO-8 package compatibility with legacy USB hub designs.

Technical Context

The AP2182SG-13 integrates two independent high-side N-channel MOSFETs with matched current-limit sensing, UVLO circuitry that disables switching below 1.9V, and dual open-drain FLG outputs with 7ms blanking to suppress false over-current reports from capacitive inrush. Each channel includes dedicated EN and FLG pins for autonomous fault reporting and sequencing.

Its internal architecture combines current-limit deglitching, thermal foldback, and reverse-current blocking-enabling robust hot-plug operation without external components. The device maintains constant ILIMIT (2.1A typ) during overload while reducing VOUT, transitioning to thermal shutdown only if fault persists beyond junction temperature threshold (+140°C).

Key Specifications

Pinout & Package

AP2182SG-13 is packaged in SO-8 (Surface Mount Small Outline) with exposed pad omitted-consistent with standard SO-8 thermal profile and PCB land pattern. Pin functions are electrically validated per Diodes DS31569 Rev. 10-2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel USB power switch applications.

Compared with AP2192SG-13, AP2182SG-13 offers direct GPIO compatibility with legacy controllers using active-low signaling, while TUSB2036IPWR adds protocol intelligence at the cost of BOM complexity and firmware dependency-making AP2182SG-13 preferable for pure power-gating tasks.

Availability

AP2182SG-13 is available at Aetrix Electronics and suitable for USB host hubs, laptop docking stations, and industrial USB peripheral controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP2182SG-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 power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.

The AP2182/AP2192 product line targets USB-compliant hot-swap power distribution, delivering integrated current limiting, fault reporting, and thermal safety in compact SO-8 and MSOP-8EP packages for space-constrained board designs.

FAQ

What is the maximum continuous load current per channel for AP2182SG-13?

The AP2182SG-13 supports 1.5A maximum continuous load current per channel, as specified in the Recommended Maximum Continuous Load Current table. This rating accounts for thermal derating at +85°C ambient and ensures reliable operation within SO-8 package thermal limits (θ_JA = 110°C/W). Exceeding this value risks thermal shutdown activation under sustained load.

Does AP2182SG-13 require external components for over-current protection?

No external components are required for basic over-current protection. The device integrates current-limit sensing, 7ms deglitch timing, and open-drain FLG outputs. Only external pull-up resistors on FLG1/FLG2 are needed for logic-level interfacing. Capacitors on IN and OUT are recommended for stability but not for protection functionality.

Can AP2182SG-13 be used in USB-C applications?

AP2182SG-13 is designed for USB 2.0 Type-A applications and lacks native USB-C features such as CC logic, VCONN switching, or PD communication. It may power USB-C downstream ports only if those ports implement USB 2.0-only mode with fixed 5V VBUS-however, it does not support USB-C alternate modes, power delivery negotiation, or cable orientation detection.

How does the 7ms FLG blanking time improve system reliability?

The 7ms FLG blanking time prevents false fault assertions caused by inrush current when enabling large output capacitors (e.g., 68µF). Without blanking, the initial surge could trigger immediate FLG assertion, causing host software to disable the port unnecessarily. This built-in deglitch ensures only sustained overloads (>7ms) generate fault signals, improving plug-and-play robustness.