Diodes Incorporated AP2820BMMTR-G1

Overview

AP2820BMMTR-G1 from BCD Semiconductor Manufacturing Limited is a high-side power distribution switch with active-high enable and open-drain FLAG output, designed for USB-compliant hot-plug power control. It features 60 mΩ R_DS(ON), 2.0 A continuous load capability, 2.7–5.5 V operating range, and integrated protections including over-current fold-back, thermal shutdown, UVLO, and soft-start. Used in USB bus/self-powered hubs and notebook motherboard power rails.

For engineers reviewing the AP2820BMMTR-G1 datasheet, AP2820BMMTR-G1 pinout, AP2820BMMTR-G1 application, or AP2820BMMTR-G1 equivalent, key selection criteria include logic-level enable polarity, guaranteed 2.0 A continuous current rating, MSOP-8 thermal performance (θ_JA = 150 °C/W), deglitched FLAG response time (5–15 ms), and absence of reverse current during shutdown.

Technical Context

The AP2820BMMTR-G1 implements an N-channel MOSFET high-side switch driven by an internal charge pump, enabling full enhancement at low VIN (down to 2.7 V). Its over-current protection uses fold-back limiting with 2.2–3.2 A trip threshold and 1.18 A short-circuit current, while thermal shutdown activates at 150 °C with 30 °C hysteresis.

UVLO ensures turn-on only above 2.2–2.7 V with 0.2 V hysteresis; soft-start limits inrush via controlled gate ramp, achieving 500 μs typical t_ON. The FLAG pin provides open-drain fault signaling with <70 mV low-voltage drop at 5 mA sink and <1.0 μA leakage when inactive.

Key Specifications

Pinout & Package

AP2820BMMTR-G1 is housed in a thermally enhanced MSOP-8 package (4.7 × 3.1 mm, 0.65 mm pitch), optimized for space-constrained USB port designs and offering θ_JA = 150 °C/W.

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, AP2820BMMTR-G1 uniquely integrates deglitched FLAG, UVLO, fold-back short protection, and USB-compliant R_DS(ON) in MSOP-8 - making it optimal for certified USB power management where fault visibility and compliance are mandatory.

Availability

AP2820BMMTR-G1 is available at Aetrix Electronics and suitable for USB bus hubs, notebook motherboard power rails, and hot-plug power supplies requiring stable component supply, green RoHS compliance, and long-term industrial lifecycle support.

Supply support for AP2820BMMTR-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 China-based analog and power IC designer specializing in high-reliability, cost-optimized solutions for consumer, computing, and industrial applications.

The AP2820 product line targets USB-compliant power distribution with integrated protection - engineered specifically for space-constrained, thermally sensitive hot-plug interfaces in notebooks, docks, and peripheral hubs.

FAQ

What is the function of the FLAG pin on AP2820BMMTR-G1?

The FLAG pin is an open-drain, deglitched fault indicator that pulls low during over-current or over-temperature events. It has a 5–15 ms delay to reject transient spikes, sinks up to 5 mA, and requires an external pull-up resistor. Its low-voltage drop (<70 mV at 5 mA) ensures reliable logic-level signaling to USB controllers or microcontrollers.

Does AP2820BMMTR-G1 support reverse current blocking?

Yes - AP2820BMMTR-G1 blocks reverse current when disabled, with I_REVERSE ≤ 1.0 μA when VOUT exceeds VIN. This prevents backfeeding from downstream loads into the input rail, critical for maintaining isolation in multi-rail systems and protecting upstream regulators during hot removal.

How does the soft-start feature limit inrush current?

Soft-start controls the MOSFET gate ramp rate internally, resulting in a typical 500 μs output rise time (t_ON). This linear turn-on spreads energy delivery across time, limiting peak inrush to safe levels for input capacitors and source supplies - verified with CIN = 2.2 μF and typical USB load profiles.

Is AP2820BMMTR-G1 compatible with both USB 2.0 and USB 3.0 power delivery?

AP2820BMMTR-G1 meets USB 2.0 power-switching specifications (60 mΩ R_DS(ON), 2.0 A continuous, 5 V operation) and is widely used in USB 2.0 hubs and ports. While not rated for USB 3.0's higher current demands, its 2.0 A rating and fast FLAG response make it suitable for USB 3.0 data-only ports where power remains at USB 2.0 levels.