Diodes Incorporated AP2142AMPG-13

Overview

AP2142AMPG-13 from Diodes Incorporated is a dual-channel, active-low enable, current-limited high-side power switch optimized for USB 2.0 and hot-swap applications. It delivers 0.7A per channel current limiting, 85mΩ typical R_DS(ON) in MSOP-8EP package, 2µs short-circuit response time, and integrated output discharge. It operates across 2.7V–5.5V input, supports -40°C to +85°C ambient, and provides reverse current blocking, UVLO, thermal shutdown, and open-drain fault flag reporting.

For engineers reviewing the AP2142AMPG-13 datasheet, AP2142AMPG-13 pinout, AP2142AMPG-13 application, or AP2142AMPG-13 equivalent, this device is selected for robust USB port power control, hot-plug module sequencing, and capacitive-load management where fast fault detection, controlled turn-on/turn-off timing, and ganged or independent channel operation are required.

Technical Context

The AP2142A implements two independent P-channel MOSFET high-side switches with dedicated current-sense FETs and deglitched open-drain FLG outputs per channel. Each channel features programmable soft-start via internal RC, 0.6ms typical rise time, and 7ms blanking on fault reporting to suppress false triggers from capacitive inrush.

Its protection architecture combines over-current limiting (0.7A typ), thermal shutdown at 140°C with 25°C hysteresis, under-voltage lockout at ~2.0V, and active discharge path (100Ω) when disabled - all without external components. The MSOP-8EP package includes an exposed thermal pad tied to GND for enhanced thermal performance (θ_JA = 75°C/W).

Key Specifications

Pinout & Package

AP2142AMPG-13 is packaged in MSOP-8EP (8-pin mini small outline package with exposed thermal pad), offering improved thermal performance (θ_JA = 75°C/W) versus SO-8. The exposed pad must be soldered to a PCB ground plane for optimal thermal dissipation and EMI control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP2142AMPG-13, AP2152AMPG-13 offers identical protection and timing but simplifies interface with pull-up–biased systems, while TPS2052BDR trades discharge capability and speed for legacy compatibility and broader vendor support - making AP2142AMPG-13 optimal for new USB 2.0 and compact hot-swap designs demanding autonomous discharge and 2µs fault reaction.

Availability

AP2142AMPG-13 is available at Aetrix Electronics and suitable for USB 2.0 host port protection, laptop docking station power sequencing, and industrial hot-swap module interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for AP2142AMPG-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 AP2142A/AP2152A family targets USB-compliant power distribution with integrated protection - designed specifically for space-constrained, thermally sensitive applications requiring zero-component fault management and seamless hot-plug operation.

FAQ

What is the maximum continuous load current per channel for AP2142AMPG-13?

The AP2142AMPG-13 supports 0.5A maximum continuous load current per channel under recommended operating conditions (T_A ≤ +85°C, V_IN = 5.0V). Its 0.7A current limit is a protective threshold - sustained operation above 0.5A risks thermal derating depending on PCB layout and ambient temperature. Derating curves in the datasheet confirm 0.5A as the rated continuous output.

Does AP2142AMPG-13 require external components for output discharge?

No. AP2142AMPG-13 integrates a 100Ω N-MOS discharge path activated automatically when EN1 or EN2 is de-asserted. This eliminates the need for external bleed resistors or MOSFETs, reducing BOM count and board area - confirmed in the Functional Block Diagram and Application Information section of DS32191 Rev. 3-2.

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

The 7ms deglitch on FLG1/FLG2 suppresses transient over-current pulses caused by capacitive inrush (e.g., plugging a 120µF USB device), preventing false fault latching. This avoids unnecessary system resets or port disablement - verified in Figure 7 (Short Circuit with Blanking Time and Recovery) and explicitly stated in the datasheet's "FLG Response" subsection.

Can AP2142AMPG-13 be used in USB 3.0 applications?

AP2142AMPG-13 is specified and qualified for USB 2.0 compliance (120µF max per port, 500mA per port), not USB 3.0. While it may function electrically with USB 3.0 VBUS rails, its 0.5A per-channel rating and lack of USB 3.0-specific timing validation (e.g., suspend/resume current limits) mean it does not meet USB 3.0 power delivery specifications - use only in USB 2.0 or generic hot-swap contexts.