Diodes Incorporated AP2815AMTR-G1

Overview

AP2815AMTR-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 delivers USB-compliant power switching for hot-plug applications, featuring over-current protection with fold-back, thermal shutdown, soft-start, and under-voltage lockout (UVLO = 2.5 V). Used in USB bus/self-powered hubs and notebook motherboard power rails.

For engineers reviewing the AP2815AMTR-G1 datasheet, AP2815AMTR-G1 pinout, AP2815AMTR-G1 application, or AP2815AMTR-G1 equivalent, key selection criteria include guaranteed 1.5A continuous current, logic-level enable compatibility (active-high version), deglitched FLAG response (10 ms typical delay), and SOIC-8 packaging with RoHS/Green compliance.

Technical Context

The AP2815AMTR-G1 implements a charge-pump–driven high-side N-MOSFET architecture to achieve low on-resistance while operating from 2.7–5.5 V input. Its internal UVLO circuit ensures turn-on only above 2.5 V, and its fold-back current limiting reduces power dissipation during sustained short-circuit events.

Thermal shutdown activates at 150 °C with 30 °C hysteresis, and the deglitched open-drain FLAG pin asserts low within 10 ms of over-current or over-temperature fault detection. The device supports auto-discharge via an internal 13 Ω pull-low resistor on VOUT during shutdown (condition A variant).

Key Specifications

Pinout & Package

AP2815AMTR-G1 is housed in a RoHS-compliant SOIC-8 package (4.9 × 6.0 × 1.25 mm), optimized for automated assembly and thermal performance in dense PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDR and NIS5130MN3T1G, the AP2815AMTR-G1 uniquely integrates FLAG reporting, auto-discharge, and UVLO in a single SOIC-8 package-enabling compact, self-contained USB-compliant hot-plug power control without external components.

Availability

AP2815AMTR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard VCCIO switching, and hot-plug peripheral power rails requiring stable component supply across industrial temperature range (−40 °C to +85 °C).

Supply support for AP2815AMTR-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 mixed-signal solutions for consumer, computing, and industrial markets.

The AP2815 product line targets USB-compliant, high-side power distribution with integrated protection-designed specifically for space-constrained, thermally demanding hot-plug applications in notebooks, docks, and hubs.

FAQ

What is the function of the FLAG pin on AP2815AMTR-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 and provides a deglitched signal with 5–15 ms delay to reject noise while ensuring reliable host microcontroller notification. It does not indicate UVLO or shutdown states.

Does AP2815AMTR-G1 support reverse current blocking when disabled?

Yes. The AP2815AMTR-G1 blocks reverse current (VOUT → VIN) when disabled due to active gate control of the internal N-MOSFET, eliminating body-diode conduction. Measured reverse leakage is ≤ 1.0 µA at 5 V, making it suitable for multi-rail isolation where backfeed must be prevented.

What is the purpose of the auto-discharge feature in the 'A' version?

The auto-discharge feature uses an internal 13–50 Ω resistor between VOUT and GND during shutdown to rapidly discharge output capacitance. This prevents floating voltages, avoids unintended wake-up of downstream devices, and eliminates need for external discharge circuitry-critical for USB compliance and system-level power sequencing.

How does the soft-start behavior affect inrush current in AP2815AMTR-G1?

The internal soft-start limits output voltage slew rate, resulting in a typical 500 µs turn-on time from enable activation to 90% VOUT. This caps peak inrush current to < 2.5 A for typical 100 µF output capacitance, protecting upstream sources and reducing stress on input capacitors and PCB traces.