Diodes Incorporated AP2331TDSA-7

Overview

AP2331TDSA-7 from Diodes Incorporated is a 0.2A single-channel current-limited high-side load switch in SOT23 package, featuring 250mΩ R_DS(ON), reverse-current blocking, and fast short-circuit response (≤1ms). It delivers controlled turn-on (0.7ms typical), UVLO (2.35–2.65V), and integrated thermal/over-voltage/over-current protection for hot-swap power sequencing in USB-compliant interfaces.

For engineers reviewing the AP2331TDSA-7 datasheet, AP2331TDSA-7 pinout, AP2331TDSA-7 application, or AP2331TDSA-7 equivalent, key selection criteria include accurate 0.4A current limiting, output transient discharge capability, reverse-current clamping at 0.20–0.25A, and compatibility with 2.7–5.2V input rails in space-constrained consumer electronics.

Technical Context

The AP2331TDSA-7 implements a monolithic N-channel MOSFET high-side switch with integrated sense-FET current monitoring and deglitch-timed fault response. Its protection architecture combines independent UVLO, reverse-current detection (IROCP), output over-voltage trip (5.3–5.6V), and thermal shutdown (150°C with 20°C hysteresis).

Soft-start is achieved via internal slew-rate control, yielding 0.7ms typical t_ON with 0.1µF load capacitance. The discharge function activates below UVLO using a dedicated 1.8kΩ NMOS path, enabling rapid V_OUT collapse-critical for HDMI hot-plug compliance and bus isolation.

Key Specifications

Pinout & Package

AP2331TDSA-7 is housed in a RoHS-compliant, halogen-free SOT23-3 package (JEDEC TO-236AB), with 1.30mm × 2.40mm footprint and 1.10mm height. Thermal resistance θ_JA is 215°C/W on standard FR-4 PCB with minimum pad layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AP22651W-7 and TCK107AG,LF, the AP2331TDSA-7 uniquely balances USB-compliant reverse-current blocking, output over-voltage trip (5.3–5.6V), and SOT23 compactness-making it optimal for space-constrained, hot-swap–critical consumer interfaces where backfeed prevention and HDMI timing are mandatory.

Availability

AP2331TDSA-7 is available at Aetrix Electronics and suitable for USB peripheral switching, HDMI hot-plug interfaces, laptop docking stations, and set-top box USB hub power management requiring stable component supply, full RoHS compliance, and traceable green packaging.

Supply support for AP2331TDSA-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.

The AP2331TDSA-7 belongs to Diodes' load switch portfolio, engineered specifically for hot-swap–enabled consumer electronics where reverse-current blocking, fast fault response, and compact SOT23 integration reduce BOM count and PCB area.

FAQ

What is the maximum continuous load current supported by AP2331TDSA-7?

The AP2331TDSA-7 supports 0.2A maximum continuous load current per its Recommended Operating Conditions. Its over-current protection triggers at 0.4A (typ), clamping output current to prevent damage during transient overload or short-circuit events-ensuring safe operation within thermal limits of the SOT23 package.

Does AP2331TDSA-7 provide reverse-current blocking, and how is it implemented?

Yes, AP2331TDSA-7 provides active reverse-current blocking via an integrated IROCP circuit that detects backflow exceeding 0.20–0.25A from OUT to IN. Upon detection, it clamps reverse current for 0.7ms before disabling the MOSFET-meeting USB specification requirements and eliminating need for external blocking diodes.

Can AP2331TDSA-7 be used in HDMI applications requiring hot-plug detection?

Yes-its dedicated 1.8kΩ internal discharge NMOS rapidly collapses V_OUT when input falls below UVLO, achieving sub-millisecond decay for typical HDMI sink capacitances. This satisfies HDMI CEC timing requirements for hot-plug detection and prevents false plug/unplug signals during cable insertion.

What thermal protection behavior does AP2331TDSA-7 exhibit under sustained overload?

Under sustained overload, AP2331TDSA-7 activates thermal shutdown at +150°C junction temperature, turning off the MOSFET. With +20°C hysteresis, it remains off until die cools to ~+130°C, then auto-recovers. This cycling behavior prevents permanent damage while maintaining visibility of persistent faults to system firmware.