Diodes Incorporated AP2815DMTR-G1

Overview

AP2815DMTR-G1 from BCD Semiconductor is a high-side power distribution switch with active-low enable and open-drain fault flag, designed for USB-compliant hot-plug power control. It integrates an N-channel MOSFET (R_DS(ON) = 60 mΩ @ 5 V), soft-start, over-current protection with fold-back, thermal shutdown, and under-voltage lockout (UVLO = 2.5 V typ.), delivering guaranteed 1.5 A continuous load in MSOP-8 package.

For engineers reviewing the AP2815DMTR-G1 datasheet, AP2815DMTR-G1 pinout, AP2815DMTR-G1 application, or AP2815DMTR-G1 equivalent, this device is selected for precise current-limited USB power switching where low quiescent supply current (65 µA), reverse-current blocking, and deglitched fault signaling are required in space-constrained designs.

Technical Context

The AP2815DMTR-G1 implements a charge-pump–driven high-side N-MOSFET switch with integrated current-sense and thermal monitoring. Its fold-back over-current protection reduces power dissipation during sustained short-circuit events, while UVLO ensures turn-on only above 2.2 V and hysteresis prevents chatter near threshold.

As an active-low enable variant without auto-discharge, it asserts FLAG low on over-current or over-temperature faults with 10 ms typical delay and supports external pull-up for system-level fault reporting. The output remains isolated from input when disabled, eliminating reverse current flow.

Key Specifications

Pinout & Package

AP2815DMTR-G1 is housed in a thermally enhanced MSOP-8 package (3.1 mm × 4.7 mm, 0.65 mm pitch), optimized for compact USB port power management 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, AP2815DMTR-G1 uniquely balances USB-compliant R_DS(ON), fault visibility via FLAG, and no-auto-discharge behavior-making it optimal for systems requiring both safety reporting and VOUT hold-up after disable.

Availability

AP2815DMTR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard power gating, and hot-plug docking stations requiring stable component supply across industrial temperature range (-40°C to +85°C).

Supply support for AP2815DMTR-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, AEC-Q200–qualified power management solutions for computing, industrial, and consumer markets.

The AP2815 product line targets USB-compliant, space-constrained power distribution with integrated protection-designed specifically for hot-plug reliability in portable and docking systems.

FAQ

What is the function of the FLAG pin on AP2815DMTR-G1?

The FLAG pin is an open-drain output that pulls low during over-current or over-temperature fault conditions. It requires an external pull-up resistor to the host controller's logic rail. Its 10 ms typical delay provides immunity to transient surges, and its deglitched behavior ensures reliable fault reporting without spurious interrupts during normal switching transients.

Does AP2815DMTR-G1 support reverse current blocking?

Yes-AP2815DMTR-G1 blocks reverse current flow from VOUT to VIN when disabled. This is achieved through internal architecture that isolates the output stage, ensuring no backfeed occurs even if VOUT exceeds VIN. Measured reverse leakage is ≤1.0 µA, making it suitable for multi-source USB systems where bus arbitration matters.

How does the soft-start feature operate in AP2815DMTR-G1?

Soft-start limits inrush current by controlling the MOSFET gate ramp rate, resulting in a typical 500 µs turn-on time from EN assertion to 90% VOUT. This prevents voltage droop on shared input rails and avoids tripping upstream current limits-especially critical when powering large downstream capacitances like USB hub VBUS decoupling banks.

What is the significance of the "D" in AP2815DMTR-G1's ordering code?

The "D" denotes the active-low enable version without auto-discharge functionality. Unlike versions "A" or "C", it leaves VOUT floating (not actively discharged) when disabled-preserving charge on downstream hold-up capacitors. This behavior is essential in applications requiring fast re-enablement or state retention after brief disable events.