Diodes Incorporated AP2815CMTR-G1

Overview

AP2815CMTR-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 soft-start. 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 AP2815CMTR-G1 datasheet, AP2815CMTR-G1 pinout, AP2815CMTR-G1 application, or AP2815CMTR-G1 equivalent, key selection criteria include active-low enable logic, auto-discharge capability, MSOP-8 thermal performance (θ_JA = 150 °C/W), and guaranteed 1.65 A minimum current limit under real-world load conditions.

Technical Context

The AP2815CMTR-G1 implements a charge-pump–driven high-side N-MOSFET switch with integrated fault detection and reporting via an open-drain FLAG pin. Its active-low EN pin supports direct microcontroller interface without level-shifting, and internal auto-discharge circuitry ensures rapid V_OUT discharge after disable-critical for USB bus reset compliance.

Protection architecture includes fold-back current limiting (1.12 A short-circuit current), thermal shutdown at 150 °C with 30 °C hysteresis, and UVLO with 2.5 V threshold and 0.2 V hysteresis. The deglitched FLAG output asserts low within 5–15 ms of OCP/OTP events, enabling reliable host-controller fault handling.

Key Specifications

Pinout & Package

AP2815CMTR-G1 is packaged in MSOP-8 (4.7 × 3.1 mm, 0.65 mm pitch), optimized for space-constrained USB hub and motherboard layouts with 150 °C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDBVR and NIS5130MN3T1G, AP2815CMTR-G1 uniquely integrates auto-discharge, deglitched FLAG, and UVLO in MSOP-8-enabling fully autonomous USB-compliant hot-plug without external components or firmware intervention.

Availability

AP2815CMTR-G1 is available at Aetrix Electronics and suitable for USB bus-powered hubs, notebook motherboard power rails, battery-charger input isolation, and industrial USB host interfaces requiring stable component supply, RoHS/Green compliance, and tape-and-reel logistics support.

Supply support for AP2815CMTR-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 solutions for consumer, computing, and industrial markets.

The AP2815 product line targets USB-compliant power distribution with integrated protection, emphasizing compact packaging (MSOP-8/SOIC-8), low R_DS(ON), and autonomous fault handling for embedded host systems.

FAQ

What is the function of the FLAG pin on AP2815CMTR-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 (typically 4.7 kΩ to V_CC) and asserts within 5–15 ms of fault onset. This signal enables host microcontrollers to detect and respond to faults without polling, supporting deterministic USB reset sequences.

Does AP2815CMTR-G1 support reverse current blocking when disabled?

Yes. When disabled, the internal N-MOSFET is fully off and its body diode is reverse-biased, preventing reverse current flow from V_OUT to VIN. Measured reverse leakage is ≤1.0 µA at 5 V, ensuring no backfeed into upstream supplies during standby or fault conditions.

How does the auto-discharge feature operate in AP2815CMTR-G1?

Upon EN deactivation, an internal 13–50 Ω pull-down resistor connects V_OUT to GND, discharging output capacitance to <10% of VIN within 10 ms. This meets USB specification requirements for rapid bus reset and prevents residual voltage from interfering with peripheral enumeration.

What is the minimum supply voltage required for reliable operation of AP2815CMTR-G1?

The device incorporates under-voltage lockout (UVLO) with a 2.2–2.7 V activation threshold and 0.2 V hysteresis. Reliable operation begins at VIN ≥ 2.7 V; below this, the switch remains disabled regardless of EN state to prevent erratic behavior or incomplete MOSFET turn-on.