Diodes Incorporated AP2822DKETR-G1

Overview

AP2822DKETR-G1 from BCD Semiconductor Manufacturing Limited is a high-side power distribution switch with active-low enable, 1.0A continuous load rating, 85mΩ R_DS(ON), 2.7–5.5V operating range, and integrated over-current, thermal, short-circuit, and UVLO protection. It delivers USB-compliant power switching for hot-plug USB hubs and notebook peripheral rails.

For engineers reviewing the AP2822DKETR-G1 datasheet, AP2822DKETR-G1 pinout, AP2822DKETR-G1 application, or AP2822DKETR-G1 equivalent, key selection criteria include active-low logic compatibility, 1.0A current limit tolerance across temperature, deglitched open-drain FLAG signaling, soft-start timing, and SOT-23-5 footprint constraints in space-constrained USB power domains.

Technical Context

The AP2822DKETR-G1 integrates an N-channel MOSFET with charge-pump gate drive to achieve low on-resistance without external bias. Its current-limit fold-back architecture reduces power dissipation during sustained short-circuit events while maintaining flag assertion.

UVLO ensures reliable turn-on only above 2.2V (typ.), and thermal shutdown triggers at 150°C with 30°C hysteresis. The deglitched FLAG output asserts low after 5–15ms delay upon OCP/OTP fault detection, enabling robust host-controller fault response.

Key Specifications

Pinout & Package

SOT-23-5 package: 2.82 mm × 2.92 mm × 1.3 mm body, 0.95 mm lead pitch, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCK107AG and TPS22945, the AP2822DKETR-G1 uniquely combines active-low enable, deglitched FLAG, and fold-back current limiting in SOT-23-5 - making it optimal for USB host controllers requiring fault-aware, space-constrained, and polarity-matched power switching.

Availability

AP2822DKETR-G1 is available at Aetrix Electronics and suitable for USB power management, notebook peripheral rails, and battery-charger circuits requiring stable component supply, RoHS-compliant green packaging, and long-term industrial lifecycle support.

Supply support for AP2822DKETR-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, cost-optimized power management solutions for consumer, computing, and industrial markets.

The AP2822 product line targets USB-compliant high-side power distribution with integrated protection - designed specifically for space-constrained, thermally sensitive applications like portable computing and peripheral hubs.

FAQ

What is the exact current limit threshold for AP2822DKETR-G1?

The AP2822DKETR-G1 is the 1.0A-rated variant: its current limit is 1.1 A (min), 1.5 A (typ.), and 2.1 A (max) at VOUT = 4.0 V and TA = 25°C. This threshold varies ±15% across –40°C to +85°C ambient and scales slightly with input voltage per datasheet Figure 9.

Does AP2822DKETR-G1 support reverse current blocking when disabled?

Yes. When disabled, the AP2822DKETR-G1 blocks reverse current from VOUT to VIN with leakage ≤1.0 µA (max) at VOUT > VIN. This is achieved via internal circuitry that disables the body diode path - confirmed in Electrical Characteristics Table (IREVERSE parameter).

How does the FLAG pin behave during thermal shutdown?

The FLAG pin asserts low during both over-current and over-temperature events. Thermal shutdown triggers at TJ = 150°C with 30°C hysteresis, and FLAG remains low until junction temperature falls below 120°C - verified in Functional Block Diagram and Electrical Characteristics (TOTSD and THYOTSD parameters).

Is an external pull-up required for the FLAG pin?

Yes. FLAG is an open-drain output requiring an external pull-up resistor (typically 4.7–10 kΩ to VIN). Without it, the pin cannot signal fault conditions to the host controller - this is explicitly stated in Pin Descriptions (Pin 1: FLAG function) and Typical Application schematic (Figure 31).