Diodes Incorporated AP2815CMM-G1

Overview

AP2815CMM-G1 from BCD Semiconductor is a high-side power distribution switch with active-low enable and deglitched open-drain FLAG output, integrating an N-channel MOSFET (R_DS(ON) = 60 mΩ @ 5 V), charge pump, soft-start, over-current protection with fold-back, thermal shutdown, and under-voltage lockout. It delivers 1.5 A continuous load current and supports USB-compliant hot-plug power management in notebook motherboards.

For engineers reviewing the AP2815CMM-G1 datasheet, AP2815CMM-G1 pinout, AP2815CMM-G1 application, or AP2815CMM-G1 equivalent, this device is selected for precise current-limited USB port power control, fault-flagging to host controllers, and robust thermal/short-circuit protection in space-constrained MSOP-8 layouts.

Technical Context

The AP2815CMM-G1 implements a charge-pump–driven N-channel high-side switch architecture to achieve low R_DS(ON) without requiring external gate drive components. Its active-low EN pin enables direct interface with USB controller GPIOs, while the open-drain FLAG pin asserts low after 5–15 ms delay upon OCP or OTP detection.

Soft-start limits inrush current via controlled gate ramping; fold-back current limiting reduces power dissipation during sustained short-circuit events; UVLO ensures turn-off below 2.2–2.7 V input, with 0.2 V hysteresis. The device operates across –40°C to +85°C ambient and supports auto-discharge of VOUT through an internal 13–50 Ω pull-low resistor when disabled.

Key Specifications

Pinout & Package

AP2815CMM-G1 is housed in an MSOP-8 package (3.1 × 4.7 mm, 0.65 mm pitch), optimized for compact USB port designs on notebook and embedded motherboard 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 NIS5132MN, AP2815CMM-G1 uniquely integrates FLAG reporting, auto-discharge, UVLO, and 60 mΩ R_DS(ON) in MSOP-8 - delivering higher integration and safer USB port control without external components.

Availability

AP2815CMM-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and hot-plug peripheral supplies requiring stable component supply, RoHS/Green compliance, and long-term industrial lifecycle support.

Supply support for AP2815CMM-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-performance, cost-optimized mixed-signal solutions for consumer, computing, and industrial markets.

The AP2815 product line targets USB-compliant, space-constrained power distribution with integrated protection - designed specifically for reliable hot-plug operation in notebooks, docking stations, and embedded USB hubs.

FAQ

What is the function of the FLAG pin on AP2815CMM-G1?

The FLAG pin is an open-drain output that pulls low within 5–15 ms of over-current or over-temperature fault detection. It requires an external pull-up resistor to the host controller's logic rail and serves as a hardware interrupt signal to initiate fault recovery - such as disabling the port or logging the event. It remains asserted until the fault condition clears and the device resets.

Does AP2815CMM-G1 support reverse current blocking when powered off?

Yes. AP2815CMM-G1 blocks reverse current flow from VOUT to VIN when disabled, due to gate control preventing body diode conduction. This is confirmed in the datasheet's "No Reverse Current when Power Off" feature and electrical test condition I_REVERSE ≤ 1.0 µA at V_OUT → V_IN, ensuring no backfeed into upstream supplies during standby or fault states.

How does the auto-discharge feature work on AP2815CMM-G1?

When the EN pin is driven high (inactive, since it is active-low), the internal 13–50 Ω pull-down resistor connects VOUT to GND, discharging output capacitance. This behavior is specific to Condition C (Active Low with Auto Discharge) and prevents floating VOUT voltages that could cause latch-up or interfere with hot-plug detection in USB systems.

What input and output capacitors are recommended for AP2815CMM-G1?

The datasheet specifies 2.2 µF input capacitor (C_IN) as sufficient for most applications; however, if frequent VOUT-to-GND shorts occur, a larger 22 µF C_IN is recommended. For C_OUT, typical values range from 1.0 µF to 470 µF depending on load transient requirements - with 1.0 µF used in characterization and up to 470 µF validated for heavy-load turn-off damping.