Diodes Incorporated AP2161MPG-13

Overview

AP2161MPG-13 from Diodes Incorporated is a single-channel, active-low enable, current-limited high-side power switch optimized for USB 2.0 hot-swap applications. It delivers 1.5A accurate current limiting, 95mΩ on-resistance at +25°C (SO-8/MSOP-8EP/SOT25), operates from 2.7V–5.5V input, and integrates undervoltage lockout, thermal shutdown, reverse current blocking, and a 7ms deglitch-enabled open-drain FLG output - deployed in consumer LCD monitors and USB hub power rails.

For engineers reviewing the AP2161MPG-13 datasheet, AP2161MPG-13 pinout, AP2161MPG-13 application, or AP2161MPG-13 equivalent, this page provides verified functional context, package-specific pin mapping (MSOP-8EP), real-world timing behavior (0.6ms typical rise time), fault reporting logic (7ms blanking), and validated alternatives for USB port power control designs.

Technical Context

The AP2161MPG-13 implements a thermally protected N-channel MOSFET high-side switch with integrated current-sense FET architecture - eliminating external sense resistors while maintaining <140mΩ R_DS(ON) across –40°C to +85°C ambient. Its UVLO threshold (1.6–2.5V) ensures reliable turn-off during brownout, and its 7ms FLG deglitch window suppresses false overcurrent triggers from capacitive inrush.

Control logic is strictly active-low EN with internal pull-down; the open-drain FLG asserts low only after sustained overcurrent (>2.0A trigger threshold) or junction temperature ≥140°C, with 25°C hysteresis enabling automatic recovery. Input leakage remains ≤1µA in shutdown, supporting ultra-low-power system states.

Key Specifications

Pinout & Package

AP2161MPG-13 is supplied in MSOP-8EP (Exposed Pad) package - an 8-pin surface-mount variant with thermal pad on underside for enhanced heat dissipation. The exposed pad must be soldered to PCB ground plane via thermal vias to achieve θ_JA = 60°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036IPWR (integrated hub) and TPS2051BDBVR (active-high switch), AP2161MPG-13 offers native reverse current blocking, precise 7ms deglitch, and active-low EN - making it optimal for discrete USB port gating where signal integrity, fault resilience, and minimal external components are prioritized.

Availability

AP2161MPG-13 is available at Aetrix Electronics and suitable for USB 2.0 host ports, LCD monitor hub rails, and set-top box peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP2161MPG-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.

AP2161MPG-13 belongs to Diodes' USB Power Switch product line - engineered specifically for robust, low-component-count hot-swap power control in USB 2.0-compliant systems with strict thermal and ESD requirements.

FAQ

What is the maximum continuous load current supported by AP2161MPG-13?

The AP2161MPG-13 is rated for 1.0A maximum continuous load current per the manufacturer's recommended operating conditions - despite its 1.5A current-limit threshold, sustained operation above 1.0A risks exceeding thermal limits in MSOP-8EP without aggressive heatsinking. Derating is required above +60°C ambient.

Does AP2161MPG-13 require external components for basic operation?

No external components are required for core switching functionality. A 0.1µF ceramic bypass capacitor between IN and GND is recommended for stability, and a pull-up resistor on FLG is needed for fault monitoring. No external current-sense resistor, RC filter, or reverse-blocking diode is necessary due to integrated features.

How does the FLG output behave during a short-circuit event?

Upon detecting overcurrent (≥2.0A peak or ≥1.5A sustained), the FLG pin goes low after a 7ms deglitch period and remains low until both overcurrent and overtemperature conditions clear. During thermal cycling, FLG stays asserted low until junction temperature falls below 115°C (140°C – 25°C hysteresis).

Can AP2161MPG-13 be used in USB-C applications?

AP2161MPG-13 is specified for USB 2.0 VBUS (5V) switching only and lacks the voltage rating, current capacity, or CC logic interface required for native USB-C power delivery. It may serve as a secondary 5V rail switch downstream of a USB-C PD controller, but not as a primary CC or VCONN switch.