Diodes Incorporated AP2815BMTR-G1

Overview

AP2815BMTR-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, deglitched open-drain FLAG output, and full protection suite including over-current fold-back, thermal shutdown, UVLO, and short-circuit detection. It operates from 2.7 V to 5.5 V and is designed for USB-compliant hot-plug power management in notebook motherboards and self-powered hubs.

For engineers reviewing the AP2815BMTR-G1 datasheet, AP2815BMTR-G1 pinout, AP2815BMTR-G1 application, or AP2815BMTR-G1 equivalent, this device delivers verified current limiting (1.65–2.8 A), soft-start timing (500 µs turn-on), fault-flag response (5–15 ms delay), and SOIC-8 package compatibility - critical for USB power rail design, hot-swap sequencing, and system-level fault reporting.

Technical Context

The AP2815BMTR-G1 implements a charge-pump–driven high-side N-MOSFET switch with active current-limiting circuitry that folds back output current during sustained overload or short-to-ground events. Its UVLO threshold (2.2–2.7 V) ensures reliable disable below valid input voltage, while the deglitched FLAG pin provides noise-immune fault signaling to host controllers.

It features logic-level enable (active-high, no auto-discharge per ordering code 'B'), reverse-current blocking when disabled, and thermal shutdown at 150 °C with 30 °C hysteresis. The device draws only 65 µA typical supply current and less than 1 µA in shutdown - enabling low-quiescent-power USB port management.

Key Specifications

Pinout & Package

AP2815BMTR-G1 is housed in an industry-standard SOIC-8 package (4.90 mm × 3.90 mm × 1.75 mm), RoHS-compliant and green (G1 suffix), suitable for reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDR and NIS5132MN, the AP2815BMTR-G1 uniquely combines UL/CB safety certification, deglitched FLAG reporting, and guaranteed 1.5 A continuous rating in SOIC-8 - making it optimal for USB-compliant, fault-aware embedded power systems requiring audit-ready compliance evidence.

Availability

AP2815BMTR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and hot-plug industrial interfaces requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.

Supply support for AP2815BMTR-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, safety-certified power management solutions for computing, consumer, and industrial markets.

The AP2815 product line targets USB-compliant, high-side power distribution with integrated protection - engineered specifically for hot-plug resilience, fault transparency, and regulatory readiness in portable and embedded platforms.

FAQ

What is the function of the FLAG pin on AP2815BMTR-G1?

The FLAG pin is an open-drain output that pulls low during over-current, over-temperature, or under-voltage lockout conditions. It requires an external pull-up resistor and provides a deglitched, noise-immune signal to the host controller - enabling real-time fault detection without software polling or additional monitoring circuitry.

Does AP2815BMTR-G1 support reverse current blocking?

Yes - the device blocks reverse current flow from VOUT to VIN when disabled, eliminating the need for an external blocking diode. Measured reverse leakage is ≤1.0 µA at 5 V, ensuring no backfeed into upstream supplies during standby or fault conditions.

How does the current-limit fold-back feature operate?

Upon current-limit activation, the AP2815BMTR-G1 reduces output current from the initial trip level (≥1.65 A) to ~1.12 A within milliseconds. This fold-back action lowers power dissipation during sustained shorts, preventing thermal runaway and allowing safe recovery once the fault clears.

Is AP2815BMTR-G1 compatible with USB 3.0 power delivery specifications?

Yes - its 60 mΩ R_DS(ON) at 5 V ensures <150 mV voltage drop at 1.5 A, satisfying USB 3.0 Type-A/B port voltage regulation requirements. Combined with soft-start and FLAG reporting, it meets USB compliance for self-powered and bus-powered hub implementations.