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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Current Regulation/Management

Diodes Incorporated AP2331W-7-01

Name: AP2331W-7-01
Brand: Diodes Incorporated
SKU: AP2331W-7-01
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP2331W-7-01

Manufacturer:: Diodes Incorporated

Category:: Current Regulation/Management

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: AP2331W-7-01.pdf

Description:: IC CURRENT SWITCH SC59-3

Quantity:: RFQ Add To RFQ list

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Inventory:4,705

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Product details

Overview

AP2331W-7-01 from Diodes Incorporated is a single-channel, current-limited high-side load switch optimized for hot-swap applications in 5V-powered systems. It delivers 0.4A accurate current limiting, 250mΩ typical R_DS(ON), reverse-current blocking, and integrated over-current, over-temperature, short-circuit, and over-voltage protection. Used in set-top boxes and USB-powered peripherals to manage power sequencing and fault containment.

For engineers reviewing the AP2331W-7-01 datasheet, AP2331W-7-01 pinout, AP2331W-7-01 application, or AP2331W-7-01 equivalent, key selection criteria include input voltage range (2.7–5.2V), fast short-circuit response (<1ms), controlled turn-on time (0.7ms), UVLO threshold (2.65V typ), and SC59 package thermal resistance (255°C/W).

Technical Context

The AP2331W-7-01 integrates a precision current-sense FET and deglitch timers to enable robust fault handling without external components. Its reverse-current protection triggers at 0.25A and disables the MOSFET after 0.7ms, while output over-voltage protection activates at 5.6V with 15µs debounce.

Thermal shutdown engages at 150°C with 20°C hysteresis, enabling self-recovering pulsed operation under sustained overload. The device uses internal soft-start to limit inrush current into heavy capacitive loads, supporting safe hot-plug insertion in USB and docking station designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7V–5.2V - supports standard USB and 3.3V/5V logic rails without external regulation
Current Limit Accuracy	0.4A ±25% - clamps fault current to prevent trace damage and upstream supply collapse
R_DS(ON)	250mΩ max at 5V - limits conduction loss to ≤25mW at 0.2A, reducing thermal stress in SC59 package
Turn-On Time	0.7ms typ - ensures controlled power ramp for EMI-sensitive displays and audio subsystems
UVLO Threshold	2.65V rising - prevents erratic switching during brown-out conditions in battery-backed systems
Reverse Current Limit	0.25A - enforces USB-compliant backfeed prevention when V_OUT > V_IN
Thermal Shutdown	150°C with 20°C hysteresis - enables automatic recovery after transient overload without system reset

Pinout & Package

The AP2331W-7-01 is housed in an SC59 package (3-pin, SOT-23 compatible outline), with exposed pad not electrically connected. Thermal performance is optimized for FR-4 PCBs with minimum recommended copper area per Diodes AP02002.

Pin/Terminal	Circuit Role	Design Meaning
IN	High-side power input	Accepts 2.7–5.2V supply; connects to upstream rail before load; UVLO sensing node
GND	Power ground reference	Return path for load current and internal protection circuitry; must be low-impedance
OUT	Switched load output	Drives downstream capacitive load; features reverse-current blocking and OVP sensing

Key Features

Feature	Design Value
Built-in soft-start	0.7ms typical turn-on time limits inrush current into 10µF+ loads without external RC
Reverse-current blocking	Active at all times; clamps backfeed to ≤0.25A and shuts down within 0.7ms if sustained
Output over-voltage protection	Triggers at 5.6V with 15µs debounce; prevents damage to 5V-tolerant downstream ICs
Discharge function	Internal 800Ω NMOS discharges output capacitor when UVLO falls, ensuring safe hot-removal
Green packaging	Halogen- and antimony-free, fully RoHS-compliant molding compound (≤900ppm Br/Cl, ≤1000ppm Sb)

Applications

USB Peripheral Power Management

Set-Top Box Rail Sequencing

Use Scenario: Hot-plugging USB-powered HDMI adapters or external storage into residential gateways.

IC Role / Device Role / Timing Role: High-side load switch controlling 5V bus power delivery with reverse-current blocking and short-circuit containment.

Use Value: Prevents backfeed into host USB port and limits fault current to <0.5A during cable short events, preserving host controller integrity.

Use Scenario: Enabling 5V logic rails only after main 12V supply stabilizes in multi-rail STB power architecture.

IC Role / Device Role / Timing Role: Controlled power switch with UVLO and soft-start ensuring clean power-up timing between supply domains.

Use Value: Eliminates need for discrete MOSFET + resistor + capacitor timing network, reducing BOM count by 4 components.

Laptop Docking Station Port Protection

Smartphone Charging Circuit Isolation

Use Scenario: Isolating USB-C accessory ports from main system rail during plug/unplug cycles in portable docks.

IC Role / Device Role / Timing Role: Fault-protected high-side switch with thermal hysteresis and fast short-circuit response.

Use Value: Survives repeated 0.5A short transients on unshielded cables without latch-up or permanent degradation.

Use Scenario: Blocking reverse current from battery-backed 3.7V system into 5V USB charger input during power-loss transitions.

IC Role / Device Role / Timing Role: Reverse-current limiter and over-voltage protector on charging path.

Use Value: Meets USB Battery Charging v1.2 reverse-current requirements (<100nA) while providing 5.6V OVP headroom.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TCK107AG,215 (Nexperia)	0.5A current limit, 150mΩ R_DS(ON), no OVP or reverse-current limiting	Lacks output over-voltage and reverse-current protection; requires external OVP diode	Choose when lower on-resistance is critical and system-level OVP is already implemented
TPS22915BYFPR (TI)	0.5A current limit, 44mΩ R_DS(ON), 1.8–5.5V input, no reverse-current blocking	Higher drive capability but no reverse-current protection; requires external backfeed mitigation	Prefer for low-drop applications where reverse-current risk is eliminated by board layout

Compared with TCK107AG and TPS22915BYFPR, the AP2331W-7-01 uniquely integrates reverse-current blocking, OVP, and thermal hysteresis in a cost-optimized SC59 package-making it optimal for USB-compliant, space-constrained hot-swap nodes where full protection autonomy is required.

Availability

AP2331W-7-01 is available at Aetrix Electronics and suitable for LCD monitor power sequencing, USB peripheral hot-swap, and set-top box rail enablement requiring stable component supply across industrial temperature ranges (–40°C to +85°C).

Supply support for AP2331W-7-01 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 power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.

The AP2331 product line targets compact, high-reliability load switching in USB, docking, and multimedia equipment-designed to replace discrete MOSFET + protection circuits with integrated fault resilience and regulatory compliance.

FAQ

What is the maximum continuous load current supported by the AP2331W-7-01?

The AP2331W-7-01 supports up to 0.2A continuous load current per its Recommended Operating Conditions table. Although its current-limit threshold is 0.4A, sustained operation above 0.2A risks exceeding thermal limits in the SC59 package due to its 255°C/W θ_JA; derating is required above ambient 60°C.

Does the AP2331W-7-01 require external components for basic operation?

No external components are required for core functionality: IN, GND, and OUT connect directly to power rail, ground, and load. A 0.1µF input bypass capacitor is recommended per the Typical Application Circuit, but not mandatory for startup. No gate resistor, pull-up, or timing capacitor is needed due to integrated soft-start and protection logic.

How does reverse-current protection behave during dynamic voltage transitions?

Reverse-current protection activates continuously: if V_OUT exceeds V_IN by ≥0.2V, the device clamps reverse current at 0.25A. If this condition persists beyond 0.7ms, the MOSFET turns off. Recovery occurs only when V_OUT drops to ≤101% of V_IN, preventing oscillation during slow decay events like battery discharge.

Can the AP2331W-7-01 be used in automotive infotainment systems?

The AP2331W-7-01 is rated for –40°C to +85°C ambient operation and carries UL Recognition (E322375) and IEC60950-1 CB certification, but it is not AEC-Q200 qualified. It may be used in non-safety-critical infotainment sub-systems (e.g., USB hub modules) provided thermal design accommodates junction temperatures ≤150°C and system-level transient suppression meets ISO 7637-2 requirements.

AP2331W-7-01 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Function:: Current Switch

Sensing Method:: High-Side

Accuracy:: -

Voltage - Input:: 2.7V ~ 5.2V

Current - Output:: 200mA

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-59-3

AP2331W-7-01 FAQ

1.How can I place an order for AP2331W-7-01 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP2331W-7-01 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AP2331W-7-01 reliable?

The price and inventory of AP2331W-7-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2331W-7-01 is usually 5 days.

3.What payment methods are accepted for AP2331W-7-01?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2331W-7-01 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP2331W-7-01?

AP2331W-7-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP2331W-7-01 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AP2331W-7-01?

For technical support, including AP2331W-7-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2331W-7-01 requirements.

6.How does Aetrix verify that AP2331W-7-01 is sourced from the original manufacturer or authorized distributors?

All AP2331W-7-01 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP2331W-7-01 meets industry standards.

7.What is the process for return or replacement of AP2331W-7-01?

All AP2331W-7-01 units undergo pre-shipment inspection (PSI). If there is an issue with AP2331W-7-01, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AP2331W-7-01 part is unused and in its original packaging.

Return procedure for AP2331W-7-01:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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