Diodes Incorporated AP2142ASG-13

Overview

AP2142ASG-13 from Diodes Incorporated is a dual-channel, active-low enable, current-limited high-side power switch optimized for USB 2.0 hot-swap applications. It delivers 0.5A continuous per channel, features 85mΩ typical R_DS(ON) at 5V, 2µs short-circuit response, integrated output discharge, and operates across 2.7V–5.5V input range. Used in USB hubs and docking stations to manage inrush, prevent bus faults, and ensure controlled power-up.

For engineers reviewing the AP2142ASG-13 datasheet, AP2142ASG-13 pinout, AP2142ASG-13 application, or AP2142ASG-13 equivalent, key selection criteria include active-low enable logic, dual independent fault flag reporting (FLG1/FLG2), 7ms deglitch timing, reverse current blocking, and SO-8 thermal performance (θ_JA = 115°C/W) under sustained 0.5A load.

Technical Context

The AP2142ASG-13 implements two independent P-channel MOSFET high-side switches with dedicated current-sense FETs and thermal shutdown circuitry. Each channel includes UVLO (2.0V threshold), soft-start (0.6ms typical rise time), and open-drain FLG outputs with 7ms blanking to suppress false over-current triggers during capacitive load turn-on.

Its discharge function activates only when disabled (EN de-asserted or VIN < V_UVLO), providing a 100Ω resistive path to safely bleed output capacitance. The device supports ganged operation (OUT1/OUT2 tied) with combined 1.4A current limit and maintains reverse current blocking even at 0V input.

Key Specifications

Pinout & Package

AP2142ASG-13 is supplied in SO-8 package with exposed pad connected to GND for thermal enhancement. Pin 1 is FLG1; pin 8 is FLG1 (top-view numbering). Exposed pad must be soldered to PCB ground plane but not used as primary current return path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2152ASG-13, the AP2142ASG-13 saves one level-shift or inverter gate in active-low MCU designs; versus TUSB2036IPWR, it offers lower quiescent current (180µA vs 2mA), smaller footprint (SO-8 vs TSSOP-28), and direct replacement for existing discrete switch layouts without firmware changes.

Availability

AP2142ASG-13 is available at Aetrix Electronics and suitable for USB 2.0 hub designs, laptop docking stations, and industrial peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for AP2142ASG-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, consumer, and industrial markets.

The AP2142A/AP2152A family targets USB-compliant hot-swap power distribution, delivering integrated current limiting, discharge, and fault reporting in compact surface-mount packages for space-constrained host and peripheral designs.

FAQ

What is the maximum continuous output current per channel for AP2142ASG-13?

The AP2142ASG-13 supports 0.5A continuous output current per channel under recommended operating conditions (T_A ≤ +85°C, SO-8 package, 5V input). Its 0.7A typical current limit provides headroom for transient surges, but sustained operation above 0.5A requires thermal derating based on PCB copper area and ambient temperature.

Does AP2142ASG-13 require external components for output discharge?

No. The AP2142ASG-13 integrates a 100Ω discharge path activated automatically when EN1 or EN2 is de-asserted or during power-up/power-down (VIN < V_UVLO). This eliminates external resistors for discharging output capacitors up to 470µF, simplifying layout and reducing BOM cost.

How does the 7ms FLG deglitch function prevent false over-current reporting?

The 7ms deglitch timer on each FLG output ignores transient current spikes lasting less than 4–15ms (typical 7ms), such as those caused by charging 100µF–470µF output capacitors. Only sustained over-current events exceeding this window assert FLG low, enabling reliable fault detection without external RC filters or firmware debouncing.

Can AP2142ASG-13 be used in automotive applications?

The AP2142ASG-13 is specified for –40°C to +85°C ambient operation and qualified to JEDEC standards, but it is not AEC-Q200 qualified. For non-safety-critical infotainment USB ports where extended temperature validation is not mandated, it may be deployed with system-level derating; however, Diodes' AEC-Q100-qualified AP22652Q is recommended for automotive-grade designs.