Diodes Incorporated AP2815BMMTR-G1

Overview

AP2815BMMTR-G1 from BCD Semiconductor is a high-side power distribution switch with integrated N-channel MOSFET, charge pump, over-current and thermal protection, 60 mΩ R_DS(ON) at 5 V, 1.5 A continuous load capability, and active-high enable with no auto-discharge. It serves as a USB-compliant hot-swap power controller in notebook motherboard and hub applications.

For engineers reviewing the AP2815BMMTR-G1 datasheet, AP2815BMMTR-G1 pinout, AP2815BMMTR-G1 application, or AP2815BMMTR-G1 equivalent, key selection criteria include guaranteed 1.5 A continuous current, deglitched open-drain FLAG output for fault reporting, soft-start timing (500 µs), UVLO threshold (2.2–2.7 V), and MSOP-8 package compatibility with space-constrained USB power rails.

Technical Context

The AP2815BMMTR-G1 implements a charge-pump–driven high-side N-MOSFET switch with fold-back current limiting and thermal shutdown at 150 °C. Its enable logic is active-high with no internal auto-discharge path, distinguishing it from versions A/C/D.

FLAG output is an open-drain signal with 5–15 ms delay to OCP/OTP faults, 35–70 mV low-level voltage at 5 mA sink, and ≤1 µA leakage. Under-voltage lockout engages below 2.2 V (rising) with 0.2 V hysteresis, ensuring reliable turn-off during brownout.

Key Specifications

Pinout & Package

AP2815BMMTR-G1 is housed in an MSOP-8 package (3.1 × 4.7 mm, 0.65 mm pitch), optimized for compact USB power routing on dense PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDBVR and NIS5132MN3TXG, AP2815BMMTR-G1 uniquely balances MSOP-8 footprint, integrated FLAG reporting, no auto-discharge behavior, and USB-compliant R_DS(ON), making it optimal for firmware-controlled USB power management where output state persistence matters.

Availability

AP2815BMMTR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and hot-plug peripheral modules requiring stable component supply across industrial temperature ranges.

Supply support for AP2815BMMTR-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-efficiency, safety-certified power management solutions for consumer and industrial markets.

The AP2815 product line delivers USB-compliant high-side switches with integrated protection, targeting space-constrained, thermally demanding applications such as portable computing and embedded USB host systems.

FAQ

What is the function of the FLAG pin on AP2815BMMTR-G1?

The FLAG pin is an open-drain output that pulls low during over-current or over-temperature events. It requires an external pull-up resistor and asserts within 5–15 ms of fault onset. Its deglitched design rejects sub-millisecond transients, ensuring reliable communication with USB host controllers without spurious interrupts.

Does AP2815BMMTR-G1 support reverse current blocking when disabled?

Yes. When disabled, AP2815BMMTR-G1 blocks reverse current from VOUT to VIN with leakage ≤1.0 µA. This prevents backfeed into the input rail, critical for battery-backed or multi-rail USB systems where unintended power coupling must be avoided.

How does the soft-start feature limit inrush current?

The internal soft-start circuit ramps the gate drive over 500 µs, controlling MOSFET turn-on slew rate. With typical 1 µF output capacitance, this limits peak inrush to <20 mA - well below USB 2.0's 100 mA hot-plug specification and preventing false over-current trips in host controllers.

What is the significance of "B" in AP2815BMMTR-G1's part number?

The "B" denotes active-high enable logic with no internal auto-discharge path. Unlike "A" (active-high with auto-discharge) or "C" (active-low with auto-discharge), version B holds VOUT voltage after disable, enabling applications requiring output voltage retention during brief enable interruptions.