Diodes Incorporated AP2820EM-G1

Overview

AP2820EM-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 2.5A continuous load capability, 60mΩ R_DS(ON), and active-high enable with auto-discharge-designed for USB-compliant hot-plug power management in notebook and motherboard applications.

For engineers reviewing the AP2820EM-G1 datasheet, AP2820EM-G1 pinout, AP2820EM-G1 application, or AP2820EM-G1 equivalent, key selection criteria include its 2.5A current limit, deglitched open-drain FLAG output for fault reporting, UVLO threshold of 2.5V (±0.2V), soft-start timing of 500μs, and SOIC-8/MSOP-8 package compatibility.

Technical Context

The AP2820EM-G1 implements a charge-pump–driven high-side N-MOSFET switch with fold-back over-current protection and thermal shutdown at 150°C. Its enable logic is active-high with internal auto-discharge path, and FLAG output asserts low after 5–15ms delay upon OCP or OTP detection.

It operates across 2.7V–5.5V input range with 80μA typical supply current and 1.0μA max shutdown current. The device enforces reverse-current blocking when disabled and includes under-voltage lockout with 0.2V hysteresis to prevent erratic turn-on during brownout conditions.

Key Specifications

Pinout & Package

AP2820EM-G1 is available in SOIC-8 and MSOP-8 packages (both RoHS-compliant "G1" variants). Pin functions are identical across packages per Figure 2 of the datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TUSB2036VFR and TPS2051BDBVR, AP2820EM-G1 provides higher 2.5A current capacity, integrated auto-discharge for hot-plug reliability, deglitched FLAG for deterministic fault handling, and UL/CB safety certification-making it suitable for certified USB peripheral and notebook power architectures where standalone, certified high-side control is required.

Availability

AP2820EM-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and hot-plug peripheral interfaces requiring stable component supply and long-term industrial lifecycle support.

Supply support for AP2820EM-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, certified power management solutions for computing and consumer electronics.

The AP2820 product line targets USB-compliant hot-swap power distribution with integrated protection-designed specifically for notebook, motherboard, and peripheral applications demanding certified safety, precise current limiting, and robust fault signaling.

FAQ

What is the function of the auto-discharge feature in AP2820EM-G1?

The auto-discharge feature actively pulls VOUT to GND through an internal resistor after the EN pin is deasserted. This prevents floating output voltage during hot-unplug events, eliminating risk of backfeed or latch-up in downstream circuits. It ensures rapid, controlled discharge of output capacitance-critical for USB compliance and system-level ESD robustness.

Does AP2820EM-G1 support both SOIC-8 and MSOP-8 packages interchangeably?

Yes-AP2820EM-G1 is offered in both SOIC-8 and MSOP-8 packages with identical pinout, electrical specifications, and thermal performance. The MSOP-8 variant saves board area but requires tighter layout controls for thermal dissipation; SOIC-8 offers easier rework and higher thermal mass. Both meet the same 2.5A continuous rating and UL/CB certification.

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

Upon junction temperature reaching 150°C, the thermal shutdown circuit activates and forces FLAG low after a 5–15ms delay-identical to over-current response. The output remains latched low until VIN drops below UVLO threshold or the device cools below 120°C (150°C − 30°C hysteresis), at which point normal operation resumes after EN reassertion.

Can AP2820EM-G1 be used with 3.3V-only systems?

Yes-its 2.7V–5.5V operating range fully supports 3.3V nominal systems. Enable thresholds (VENH ≥1.6V, VENL ≤1.0V) ensure clean logic recognition from 3.3V GPIOs, and FLAG's 35–70mV low-state voltage guarantees TTL/CMOS compatibility. All protections-including UVLO at 2.5V-remain functional, preventing operation below valid 3.3V rail tolerance.