Diodes Incorporated AP2820GMM-G1

Overview

AP2820GMM-G1 from BCD Semiconductor Manufacturing Limited is a high-side power distribution switch with active-low enable and open-drain fault flag, designed for USB-compliant hot-plug power control. It integrates an N-channel MOSFET with 60 mΩ R_DS(ON), over-current protection (3.4 A typical current limit), thermal shutdown, and under-voltage lockout (2.5 V threshold), targeting USB bus/self-powered hubs and notebook motherboard power rails.

For engineers reviewing the AP2820GMM-G1 datasheet, AP2820GMM-G1 pinout, AP2820GMM-G1 application, or AP2820GMM-G1 equivalent, key selection criteria include continuous 2.5 A load capability, MSOP-8 package footprint, active-low logic enable, fold-back short-circuit protection, and deglitched FLAG output for host controller fault reporting.

Technical Context

The AP2820GMM-G1 implements a charge-pump–driven high-side N-MOSFET switch with integrated soft-start to limit inrush current during power-up. Its protection architecture combines cycle-by-cycle over-current detection with fold-back current limiting and thermal shutdown at 150 °C with 30 °C hysteresis.

It features a deglitched open-drain FLAG pin that asserts low within 10 ms of over-current or over-temperature events, and includes UVLO (2.5 V ±0.2 V) to prevent operation below valid supply voltage. The device supports reverse-current blocking when disabled and provides internal pull-low on VOUT for versions with auto-discharge functionality.

Key Specifications

Pinout & Package

AP2820GMM-G1 is housed in an MSOP-8 package (4.7 mm × 3.1 mm, 0.65 mm pitch), optimized for space-constrained USB port power management on notebooks and docking stations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22965DRLR and NIS5020MNTBG, AP2820GMM-G1 uniquely delivers 2.5 A USB-compliant switching with integrated FLAG reporting, auto-discharge, and UL/CB certification-making it optimal for certified consumer electronics requiring robust fault handling and compact layout.

Availability

AP2820GMM-G1 is available at Aetrix Electronics and suitable for USB bus-powered hubs, notebook motherboard power rails, and battery-charger circuits requiring stable component supply, RoHS-compliant green packaging, and long-term industrial lifecycle support.

Supply support for AP2820GMM-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 AP2820 product line targets USB-compliant power distribution with integrated protection, emphasizing compact packaging, safety certification, and plug-and-play integration for notebook, docking, and peripheral manufacturers.

FAQ

What is the function of the FLAG pin on AP2820GMM-G1?

The FLAG pin is an open-drain output that pulls low within 10 ms of over-current or over-temperature events. It requires an external pull-up resistor and signals fault conditions to the host controller. Its deglitched design prevents false triggering from transient surges, and its 70 mV low-level voltage at 5 mA sink ensures reliable logic-level detection by standard GPIOs.

Does AP2820GMM-G1 support automatic discharge of the output capacitor when disabled?

Yes - AP2820GMM-G1 includes an internal 100–200 Ω pull-low resistor on the VOUT pins, enabling automatic discharge of downstream capacitance upon disable. This feature eliminates the need for external discharge circuitry and ensures safe hot-plug removal in USB applications, complying with USB specification requirements for port reset behavior.

How does the AP2820GMM-G1 handle short-circuit conditions?

Under short-to-ground, AP2820GMM-G1 activates fold-back current limiting, reducing output current to 1.18 A to limit power dissipation. It combines this with thermal shutdown at 150 °C and 30 °C hysteresis, plus a deglitched FLAG assertion. The device remains latched off until EN is cycled, preventing repeated fault cycling and ensuring system-level fault containment.

What is the significance of the 'G' in AP2820GMM-G1's ordering code?

The 'G' denotes the active-low enable version with auto-discharge capability and 2.5 A continuous current rating. Per the datasheet's ordering table, 'G' corresponds to "Active Low with Auto Discharge (Continuous 2.5A)" - distinguishing it from 'A'/'C' (2.0 A) and 'E'/'F' (2.5 A, active-high) variants. The 'MM' suffix confirms MSOP-8 packaging, and 'G1' indicates RoHS-compliant green finish.