Diodes Incorporated AP2186SG-13

Overview

AP2186SG-13 from Diodes Incorporated is a dual-channel, active-low enable, high-side USB power switch with 2.1A current limiting, 90mΩ on-resistance (MSOP-8EP), and integrated short-circuit/thermal protection. It operates from 2.7V to 5.5V input, delivers controlled 0.6ms rise time, and reports faults via open-drain FLG outputs with 7ms deglitch-designed for USB 2.0-compliant hot-swap ports in laptop docking stations and self-powered hubs.

For engineers reviewing the AP2186SG-13 datasheet, AP2186SG-13 pinout, AP2186SG-13 application, or AP2186SG-13 equivalent, this device supports precise current-limited power delivery, reverse current blocking, UVLO (1.9V threshold), and fault-aware system-level power sequencing without external components.

Technical Context

The AP2186SG-13 integrates two independent high-side N-channel MOSFET drivers with matched current-limit sensing, thermal shutdown at 140°C (25°C hysteresis), and under-voltage lockout that disables switching below 1.9V. Each channel features dedicated EN and FLG pins, enabling per-port control and independent fault reporting.

Its internal architecture eliminates external current-sense resistors via integrated sense-FETs, maintains <1µA shutdown current, and uses deglitched open-drain FLG outputs to suppress false over-current triggers from capacitive load inrush-critical for reliable USB port management in consumer and computing systems.

Key Specifications

Pinout & Package

AP2186SG-13 is supplied in SO-8 package (lead-free, RoHS-compliant) with exposed pad thermally connected to GND. The package enables efficient heat dissipation (θ_JA = 110°C/W on 2-layer FR-4 board) and supports surface-mount reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036IRHBR and TPS2051BDR, the AP2186SG-13 provides true dual-channel independence, reverse current blocking, and hardware-deglitched fault reporting-enabling simpler, more robust USB port power management in space-constrained designs.

Availability

AP2186SG-13 is available at Aetrix Electronics and suitable for USB 2.0 hubs, laptop docking stations, and set-top box peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP2186SG-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and connectivity applications.

The AP2186 series belongs to Diodes' USB power distribution switch product line, engineered specifically for compliant, high-reliability hot-swap power control in consumer and computing USB endpoints.

FAQ

What is the function of the FLG pins on AP2186SG-13?

The FLG1 and FLG2 pins are open-drain fault indicators that go low during over-current or thermal shutdown events. Each pin corresponds to its respective channel and includes a built-in 7ms deglitch timer to suppress false triggers from capacitive inrush. An external pull-up resistor is required to interface with microcontroller GPIO or interrupt lines.

Does AP2186SG-13 support reverse current blocking?

Yes-AP2186SG-13 actively blocks reverse current flow from OUT to IN when the switch is disabled. This prevents backfeeding from powered peripherals into the host supply, a critical requirement for USB compliance and system-level power domain isolation in docking stations and hubs.

Can AP2186SG-13 operate from a 3.3V supply?

No-AP2186SG-13 requires a minimum input voltage of 2.7V but is designed for 5V USB VBUS operation. Its UVLO threshold is 1.9V, and R_DS(ON) degrades above 120mΩ at 3.3V, exceeding recommended operating limits. It must be powered from a 5V rail meeting USB 2.0 specification (4.75V–5.25V).

How does thermal shutdown behave during sustained overload?

When junction temperature reaches ~140°C, AP2186SG-13 disables both channels and asserts FLG. After cooling by ~25°C (to ~115°C), it automatically recovers and re-enables-cycling until the fault is removed. This hiccup-mode behavior protects the die without requiring external reset, supporting graceful degradation in overload scenarios.