Diodes Incorporated AP2815CM-G1

Overview

AP2815CM-G1 from BCD Semiconductor is a high-side power distribution switch with active-low enable and deglitched open-drain FLAG output, designed for USB-compliant hot-plug power control. It integrates an N-channel MOSFET (R_DS(ON) = 60 mΩ @ 5 V), soft-start, over-current protection with fold-back, thermal shutdown, and under-voltage lockout (UVLO = 2.2–2.7 V), supporting 1.5 A continuous load in SOIC-8 package.

For engineers reviewing the AP2815CM-G1 datasheet, AP2815CM-G1 pinout, AP2815CM-G1 application, or AP2815CM-G1 equivalent, this device is selected for precise current-limited USB power switching where fault signaling to host controllers, low quiescent current (65 µA typ.), and reverse-current blocking during shutdown are critical design requirements.

Technical Context

The AP2815CM-G1 implements a charge-pump–driven high-side N-MOSFET switch with integrated current-sense and thermal monitoring circuitry. Its fold-back current limiting reduces power dissipation during sustained short-circuit events, while the deglitched FLAG output ensures reliable fault reporting without false triggers from transient overloads.

It features active-low enable logic with auto-discharge capability (per ordering code 'C'), UVLO hysteresis of 0.2 V, and guaranteed reverse-current blocking (<1 µA) when disabled. The device operates across –40°C to +85°C ambient and supports input voltages from 2.7 V to 5.5 V - matching USB 2.0/3.0 bus voltage tolerances.

Key Specifications

Pinout & Package

AP2815CM-G1 is housed in a standard SOIC-8 package (5.0 mm × 6.2 mm, 1.27 mm pitch), RoHS-compliant and green (G1 suffix). Pinout is identical across AP2815 variants and validated per datasheet Figure 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDBVR and NIS5132MN, AP2815CM-G1 uniquely integrates auto-discharge, deglitched FLAG, and 60 mΩ R_DS(ON) in SOIC-8 - delivering full USB 2.0/3.0 hot-plug compliance without supplemental components.

Availability

AP2815CM-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and hot-plug peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.

Supply support for AP2815CM-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, high-reliability power management solutions for consumer, computing, and industrial markets.

The AP2815 product line targets USB-compliant power distribution with integrated protection - engineered specifically for hot-plug reliability, low R_DS(ON), and minimal external component count in space-constrained applications.

FAQ

What is the function of the FLAG pin on AP2815CM-G1?

The FLAG pin is an open-drain output that asserts low during over-current, over-temperature, or under-voltage lockout conditions. It requires an external pull-up resistor and provides a deglitched 5–15 ms delayed signal to avoid false triggering from transient loads - enabling reliable fault communication to USB host controllers without software polling.

Does AP2815CM-G1 support reverse-current blocking when disabled?

Yes - AP2815CM-G1 blocks reverse current from VOUT to VIN when disabled, with leakage ≤1.0 µA. This is achieved by internal gate control of the N-MOSFET, eliminating backfeed paths critical for battery-powered systems and USB OTG applications where VBUS must remain isolated during sleep or disconnect.

How does the auto-discharge feature operate on AP2815CM-G1?

When EN is pulled high (disabled), AP2815CM-G1 activates an internal 13–50 Ω pulldown between VOUT and GND. This discharges output capacitance rapidly - meeting USB specification requirements for VBUS decay time during hot-unplug - without needing external discharge FETs or resistors.

What is the difference between AP2815CM-G1 and AP2815AM-G1?

AP2815CM-G1 uses active-low enable (EN low = ON) with auto-discharge; AP2815AM-G1 uses active-high enable (EN high = ON) with auto-discharge. Both share identical R_DS(ON), current limit, and protection features. The choice depends solely on system-level enable logic polarity and existing PCB layout constraints.