Diodes Incorporated AP2820AMM-G1

Overview

AP2820AMM-G1 from BCD Semiconductor Manufacturing Limited is a high-side power distribution switch with integrated N-channel MOSFET, charge pump, and protection circuitry. It delivers 60 mΩ R_DS(ON), 2.0 A continuous load capability, active-high enable, and open-drain FLAG output for fault reporting-designed specifically for USB-compliant hot-plug power management in notebook and motherboard applications.

For engineers reviewing the AP2820AMM-G1 datasheet, AP2820AMM-G1 pinout, AP2820AMM-G1 application, or AP2820AMM-G1 equivalent, this device supports precise current limiting (2.2–3.2 A), soft-start control (500 µs turn-on), UVLO (2.5 V threshold), thermal shutdown (150 °C), and reverse-current blocking-key parameters for USB bus power integrity and system-level fault diagnostics.

Technical Context

The AP2820AMM-G1 implements a charge-pump-driven high-side N-MOSFET switch with fold-back over-current protection and deglitched open-drain FLAG signaling. Its internal UVLO ensures operation only above 2.5 V, while thermal shutdown activates at 150 °C with 30 °C hysteresis to prevent latch-up during sustained overload.

It features logic-level enable compatibility (VENH ≥ 1.6 V, VENL ≤ 1.0 V), low quiescent supply current (75 µA typ.), and shutdown leakage <1.0 µA. The integrated output pull-low resistor (100–200 Ω) on A/C/E/G versions enables automatic discharge of downstream capacitance upon disable.

Key Specifications

Pinout & Package

AP2820AMM-G1 is housed in an MSOP-8 package (4.7 × 3.1 mm, 0.65 mm pitch), optimized for space-constrained USB power rail designs. Pin assignments are validated per datasheet Figure 2 and Table "Pin Descriptions".

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, the AP2820AMM-G1 uniquely combines MSOP-8 packaging, integrated discharge resistor, deglitched open-drain FLAG, and USB-compliant soft-start in a single 2.0 A-rated device-enabling smaller, safer, and more standards-compliant USB power architectures.

Availability

AP2820AMM-G1 is available at Aetrix Electronics and suitable for USB bus-powered hubs, notebook motherboard power management, and hot-plug PCIe card slots requiring stable component supply, RoHS-compliant green packaging, and long-term lifecycle support.

Supply support for AP2820AMM-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 fabless analog IC designer specializing in power management, LED drivers, and high-reliability mixed-signal solutions for computing, consumer, and industrial markets.

The AP2820 product line targets USB-compliant power distribution with integrated protection-designed to replace discrete MOSFET+driver+protection circuits in space- and reliability-critical portable and embedded platforms.

FAQ

What is the function of the FLAG pin on AP2820AMM-G1?

The FLAG pin is an open-drain output that asserts low during over-current, over-temperature, or under-voltage lockout events. It requires an external pull-up resistor and provides deglitched fault indication with 5–15 ms delay-ensuring reliable communication with USB host controllers without false triggering from transient inrush currents.

Does AP2820AMM-G1 support reverse current blocking when disabled?

Yes. When the EN pin is deasserted, the internal N-MOSFET turns off and blocks reverse current flow from VOUT to VIN. Measured reverse leakage is ≤1.0 µA at 5 V differential, eliminating backfeed risks in multi-source USB systems and battery-backed applications.

How does the soft-start feature operate, and what is its timing?

The soft-start limits inrush current by controlling the MOSFET gate ramp rate, achieving 90% VOUT within 500 µs after EN assertion. This behavior is internal and requires no external components-ensuring consistent USB-compliant turn-on across temperature and load variations without capacitor tuning.

Is AP2820AMM-G1 compatible with both 3.3 V and 5 V logic enable signals?

Yes. The EN pin accepts logic-high thresholds from 1.6 V to 5.5 V and logic-low thresholds up to 1.0 V, making it interoperable with 3.3 V microcontrollers and 5 V USB hub controllers without level-shifting. Input current remains within ±1.0 µA across the full range.