Diodes Incorporated AP2820HMTR-G1

Overview

AP2820HMTR-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), active-low enable, open-drain FLAG output for fault reporting, and operates across 2.7V–5.5V input range-designed specifically for USB-compliant hot-plug power management in notebook and motherboard applications.

For engineers reviewing the AP2820HMTR-G1 datasheet, AP2820HMTR-G1 pinout, AP2820HMTR-G1 application, or AP2820HMTR-G1 equivalent, key selection criteria include guaranteed 2.5A continuous current handling, deglitched FLAG response (5–15ms delay), soft-start control to limit inrush, thermal shutdown at 150°C, and SOIC-8 package compatibility with industrial temperature range (−40°C to +85°C).

Technical Context

The AP2820HMTR-G1 implements a charge-pump–driven high-side N-MOSFET switch with fold-back over-current protection and auto-recovery behavior during short-circuit events. Its UVLO threshold is fixed at 2.2–2.7V with 0.2V hysteresis, ensuring reliable turn-on only under valid supply conditions.

It features an active-low enable input with V_ENL ≤1.0V and V_ENH ≥1.6V, deglitched open-drain FLAG output (V_FLG ≤70mV @ 5mA sink), and internal output pull-low resistor (100–200Ω) for controlled discharge after shutdown-critical for USB bus isolation and safe hot-plug sequencing.

Key Specifications

Pinout & Package

AP2820HMTR-G1 is housed in a green, RoHS-compliant SOIC-8 package (5.0mm × 6.2mm, 1.27mm pitch), rated for −40°C to +85°C ambient operation and qualified per UL E339337 and Nemko CB Scheme IEC60950-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDBVR and NIS5132MN, AP2820HMTR-G1 uniquely integrates FLAG-based fault reporting, internal output discharge, UVLO, and thermal shutdown in a single SOIC-8 package-enabling fully autonomous, standards-compliant USB power switching without support components.

Availability

AP2820HMTR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook motherboard designs, and hot-plug power supplies requiring stable component supply, long-term lifecycle assurance, and green RoHS-compliant packaging.

Supply support for AP2820HMTR-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 semiconductor solutions for consumer, computing, and industrial markets.

The AP2820 product line targets USB-compliant power distribution with integrated protection-designed to replace discrete FET+controller solutions in space-constrained, thermally sensitive applications like notebooks and embedded hubs.

FAQ

What is the function of the FLAG pin on AP2820HMTR-G1?

The FLAG pin is an open-drain output that pulls low during over-current, over-temperature, or under-voltage lockout conditions. It requires an external pull-up resistor and asserts within 5–15ms of fault onset. This signal enables host controllers to detect and respond to faults without polling, supporting USB specification-compliant error handling and port recovery sequences.

Does AP2820HMTR-G1 support automatic discharge of the output capacitor after shutdown?

Yes-AP2820HMTR-G1 includes an internal 100–200Ω pull-down resistor on the VOUT pins (enabled in H-version variants), which actively discharges output capacitance when the device is disabled. This eliminates floating VOUT voltage, prevents backfeed, and satisfies USB hot-plug reset timing requirements without external components.

How does the soft-start feature limit inrush current?

The AP2820HMTR-G1 controls gate drive slew rate internally, resulting in a typical 500μs output rise time from enable activation to 90% VOUT. This controlled turn-on spreads capacitive charging energy over time, limiting peak inrush to levels compatible with USB 2.0/3.0 source impedance and preventing upstream rail droop or fuse tripping.

What protection mechanisms are built into AP2820HMTR-G1?

AP2820HMTR-G1 integrates six protection functions: (1) fold-back over-current protection (1.18A short-circuit limit), (2) thermal shutdown at 150°C with 30°C hysteresis, (3) under-voltage lockout (2.2–2.7V threshold), (4) soft-start to limit inrush, (5) reverse-current blocking (<1.0μA leakage), and (6) deglitched FLAG reporting for fault diagnostics-all implemented without external components.