Diodes Incorporated AP2815AMMTR-G1

Overview

AP2815AMMTR-G1 from BCD Semiconductor is a 1.5A high-side power distribution switch with integrated N-channel MOSFET (R_DS(ON) = 60 mΩ @ 5 V), enable control, and open-drain FLAG fault indicator. It operates from 2.7 V to 5.5 V, delivers guaranteed continuous 1.5 A load current, and integrates soft-start, over-current protection with fold-back, thermal shutdown, and under-voltage lockout (UVLO = 2.2–2.7 V). It is used in USB bus/self-powered hubs for hot-plug-safe power switching.

For engineers reviewing the AP2815AMMTR-G1 datasheet, AP2815AMMTR-G1 pinout, AP2815AMMTR-G1 application, or AP2815AMMTR-G1 equivalent, key selection criteria include its 60 mΩ on-resistance compliance with USB voltage-drop requirements, active-high enable logic (Condition A), MSOP-8 package footprint, deglitched FLAG response (5–15 ms delay), and auto-discharge capability during shutdown.

Technical Context

The AP2815AMMTR-G1 implements a charge-pump–driven high-side N-MOSFET switch architecture with integrated protection logic. Its UVLO circuit ensures turn-on only above 2.2 V, while fold-back current limiting reduces power dissipation during sustained short-circuit events at V_OUT.

It features an active-high enable input with 1.6–5.5 V threshold and includes internal output discharge (13–50 Ω pull-low) for rapid V_OUT decay after disable-critical for USB hot-plug safety. The FLAG pin asserts low within 5–15 ms of over-current or over-temperature fault detection and requires external pull-up.

Key Specifications

Pinout & Package

AP2815AMMTR-G1 is housed in an MSOP-8 package (3.0 × 4.7 mm, 0.65 mm pitch), optimized for space-constrained USB hub and notebook motherboard layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDBVR and NIS5132MN, AP2815AMMTR-G1 uniquely combines USB-compliant R_DS(ON), integrated FLAG reporting, auto-discharge, and fold-back OCP in a single MSOP-8 package-enabling certified, self-contained hot-plug power management without external components.

Availability

AP2815AMMTR-G1 is available at Aetrix Electronics and suitable for USB bus-powered hubs, notebook motherboard power rails, and battery-charger load switching requiring stable component supply and RoHS-compliant green packaging.

Supply support for AP2815AMMTR-G1 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

BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-reliability, cost-optimized semiconductor solutions for consumer, computing, and industrial markets.

The AP2815 product line targets USB-compliant power distribution with integrated protection-designed specifically for space-constrained, hot-plug–enabled systems requiring fail-safe 5 V rail control without external fault-handling circuitry.

FAQ

What is the logic polarity of the EN pin on AP2815AMMTR-G1?

The AP2815AMMTR-G1 uses Condition A: active-high enable with a minimum threshold of 1.6 V. When EN ≥ 1.6 V, the switch turns on; when EN ≤ 1.0 V, it shuts down. This matches standard CMOS logic levels and eliminates need for level-shifting in 3.3 V or 5 V microcontroller interfaces.

Does AP2815AMMTR-G1 support reverse current blocking when disabled?

Yes. The device blocks reverse current from VOUT to VIN when disabled via gate control of the internal N-MOSFET, eliminating body-diode conduction. Measured reverse leakage is ≤1.0 µA at 5 V, ensuring no backfeed into upstream supplies during hot-unplug or standby modes.

How does the fold-back current limiting behave during a sustained short at VOUT?

Under sustained short-circuit, the AP2815AMMTR-G1 reduces output current from its initial 1.65–2.8 A limit to ~1.12 A (typical short-circuit current), lowering power dissipation to <1.2 W. This fold-back action prevents thermal runaway and extends safe fault duration beyond 100 ms before thermal shutdown activates at 150 °C.

Is an external pull-up resistor required for the FLAG pin?

Yes. FLAG is an open-drain output and must be pulled up externally (typically 4.7 kΩ to 5 V) to generate a valid logic-high when no fault is present. During OCP or OTP, FLAG pulls low with ≤70 mV saturation voltage at 5 mA sink, ensuring clean interrupt assertion to USB controllers.