Diodes Incorporated AP2820HMM-G1

Overview

AP2820HMM-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 in notebook and motherboard applications. It features 60 mΩ R_DS(ON), 2.5 A continuous load capability (H version), 2.7 V to 5.5 V operating range, and integrated protections including over-current fold-back, thermal shutdown, UVLO, and soft-start.

For engineers reviewing the AP2820HMM-G1 datasheet, AP2820HMM-G1 pinout, AP2820HMM-G1 application, or AP2820HMM-G1 equivalent, this device supports precise current-limited USB port power switching with deglitched fault reporting, low quiescent current (80 μA typ.), and MSOP-8 packaging for space-constrained designs.

Technical Context

The AP2820HMM-G1 integrates an N-channel MOSFET with charge pump gate drive, enabling full enhancement at low input voltages down to 2.7 V. Its active-low enable (EN) pin directly interfaces with USB host controllers requiring logic-level compatibility without external level-shifting.

Functional block includes fold-back current limiting that reduces output current during short-circuit events to ~1.18 A, combined with 15 ms deglitched FLAG assertion delay to reject transient overloads. Thermal shutdown triggers at 150 °C with 30 °C hysteresis, ensuring robust operation under sustained overload.

Key Specifications

Pinout & Package

AP2820HMM-G1 is housed in an MSOP-8 package (4.7 mm × 3.1 mm, 0.65 mm pitch), optimized for compact USB port power management layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036IRHBR and TPS2051BDBVR, AP2820HMM-G1 delivers higher current (2.5 A), dedicated fault signaling via FLAG, built-in UVLO and auto-discharge, and MSOP-8 packaging - making it optimal for discrete, diagnostic-capable USB power switching where space and reliability are prioritized.

Availability

AP2820HMM-G1 is available at Aetrix Electronics and suitable for USB bus-powered hubs, notebook motherboard VBUS control, and battery-charger input isolation requiring stable component supply and RoHS-compliant green packaging.

Supply support for AP2820HMM-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, safety-certified power management solutions for computing and consumer electronics.

The AP2820 product line targets USB-compliant power distribution with integrated protection, emphasizing low R_DS(ON), precise current limiting, and compact packaging for portable and embedded platforms.

FAQ

What is the maximum continuous output current supported by AP2820HMM-G1?

The AP2820HMM-G1 is rated for 2.5 A continuous output current, as specified in the ordering information table for 'H'-suffix variants. This rating is validated across –40°C to +85°C ambient temperature with proper PCB thermal design and 2.2 μF input capacitance.

Does AP2820HMM-G1 include automatic output discharge when disabled?

Yes - the H version includes an internal pulldown resistor (100–200 Ω) on VOUT during shutdown, actively discharging output capacitance. This feature eliminates floating VBUS conditions and supports fast, safe hot-plug reconnection without external components.

How does the FLAG pin behave during over-temperature events?

The FLAG pin asserts low (open-drain sink) for both over-current and over-temperature faults, with identical 5–15 ms deglitch timing. Thermal shutdown triggers at 150 °C and holds FLAG active until junction temperature falls below 120 °C due to 30 °C hysteresis.

Is AP2820HMM-G1 compatible with 3.3 V logic-level enable signals?

Yes - its enable threshold is V_ENL ≤ 1.0 V (low) and V_ENH ≥ 1.6 V (high), ensuring reliable recognition of 3.3 V CMOS logic levels. The active-low EN pin draws only ±1.0 μA, minimizing loading on microcontroller GPIOs.