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

Diodes Incorporated AP2331TDW-7

Name: AP2331TDW-7
Brand: Diodes Incorporated
SKU: AP2331TDW-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP2331TDW-7

Manufacturer:: Diodes Incorporated

Category:: Current Regulation/Management

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

Datasheet:: AP2331TDW-7.pdf

Description:: IC CURRENT SWITCH SC59-3

Quantity:: RFQ Add To RFQ list

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Inventory:1,490

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Product details

Overview

AP2331TDW-7 from Diodes Incorporated is a single-channel, current-limited high-side load switch optimized for hot-swap and capacitive-load applications. It delivers 0.4A accurate current limiting, 250mΩ typical R_DS(ON), reverse-current blocking, and integrated output transient discharge - enabling robust power sequencing in USB-compliant and HDMI systems.

For engineers reviewing the AP2331TDW-7 datasheet, AP2331TDW-7 pinout, AP2331TDW-7 application, or AP2331TDW-7 equivalent, key selection criteria include its 2.7V–5.2V input range, 0.7ms typical turn-on time with soft-start, UVLO (2.35–2.65V), OVP (5.3–5.6V), and SC59 package thermal resistance of 255°C/W.

Technical Context

The AP2331TDW-7 integrates a precision current-sense FET for over-current protection without external resistors, clamping output current to 0.4A (typ) during overload while maintaining regulated voltage drop. Its deglitch logic provides 0.7ms delay before MOSFET shutdown upon reverse-current detection at 0.20–0.25A.

Thermal protection activates at +150°C junction temperature with +20°C hysteresis, enabling safe pulsed recovery under sustained fault. Output over-voltage protection triggers at 5.3V (min) with 15µs debounce, and internal NMOS discharge (1.8kΩ) actively drains output capacitance when VIN falls below UVLO.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7V to 5.2V - supports USB 2.0/3.0 bus and 3.3V/5V system rails without level-shifting.
Current Limit Threshold	0.4A (typ) - tightly regulates fault current to protect downstream circuitry during short-circuit events.
R_DS(ON)	250mΩ (typ) at 5V, 0.2A - minimizes conduction loss and self-heating in compact SC59 footprint.
Turn-On Time	0.7ms (typ) with 0.1µF load - ensures controlled inrush for hot-plug compliance and EMI reduction.
UVLO Threshold	2.35–2.65V - guarantees clean power-up sequencing and prevents erratic switching during brown-out.
OVP Trip Point	5.3–5.6V - safeguards connected ICs from over-voltage damage in shared-bus or back-drive scenarios.
Reverse Current Limit	0.20–0.25A - enforces USB specification compliance by blocking harmful back-feed into host ports.

Pinout & Package

AP2331TDW-7 is housed in the SC59 package (3-pin, SOT-23 compatible outline), with 2.8mm × 1.6mm body, 0.95mm height, and exposed pad for enhanced thermal dissipation. Pin 1 = GND, Pin 2 = OUT, Pin 3 = IN.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Power Ground Reference	Primary return path for internal current-sense circuitry and thermal substrate connection.
OUT (Pin 2)	Switched Load Output	Drives capacitive loads up to 10µF; features active discharge path via internal 1.8kΩ NMOS.
IN (Pin 3)	Input Power Supply	Accepts 2.7–5.2V rail; enables UVLO monitoring and supplies internal bias for gate control logic.

Key Features

Feature	Design Value
Controlled Rise Time with Soft-Start	0.7ms typical turn-on time limits inrush current to prevent supply droop and board-level EMI.
Output Transient Discharge	Internal 1.8kΩ NMOS discharges output capacitor on power-down - essential for HDMI hot-plug detection.
Reverse-Current Blocking	Active IROCP limit at 0.20–0.25A prevents back-feed into host ports, meeting USB 2.0/3.0 spec requirements.
Multi-Fault Protection	Simultaneous OCP, OVP, thermal shutdown, and UVLO ensure fail-safe operation under real-world fault conditions.
Green Packaging	Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb); fully RoHS and UL E322375 certified.

Applications

USB Peripheral Power Switching

HDMI Hot-Plug Detection

Use Scenario: External USB devices (e.g., hubs, docking stations) require controlled power enable/disable during enumeration and disconnect.

IC Role / Device Role / Timing Role: High-side load switch managing VBUS delivery with reverse-current blocking and fast fault response.

Use Value: Prevents back-driving host port during cable removal and ensures clean hot-plug detection via rapid output discharge.

Use Scenario: HDMI source devices (e.g., laptops, set-top boxes) must assert HPD signal only after stable 5V power is applied to sink.

IC Role / Device Role / Timing Role: Regulated power switch delivering 5V to HDMI sink with precise 0.7ms turn-on and automatic output discharge.

Use Value: Enables reliable HPD assertion timing and eliminates false plug/unplug detection caused by floating output voltage.

LCD Panel Power Sequencing

Server Board Management

Use Scenario: LCD TVs and monitors use multiple power domains (logic, backlight, interface) requiring staggered, fault-tolerant enable timing.

IC Role / Device Role / Timing Role: Dedicated channel for panel interface rail (e.g., LVDS/TTL) with current limiting and OVP.

Use Value: Isolates panel faults from main SoC, preventing system reset; OVP protects sensitive timing controllers from bus transients.

Use Scenario: Rack-mounted servers require hot-swap capability for add-in cards (e.g., PCIe NICs, storage controllers) with strict power ramp control.

IC Role / Device Role / Timing Role: High-reliability load switch for 3.3V/5V auxiliary rails with thermal cycling resilience and traceable fault logging.

Use Value: Supports BMC-monitored power enable with built-in deglitching and thermal hysteresis for unattended recovery.

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
TPS22965DSGR	0.5A current limit, 44mΩ R_DS(ON), no reverse-current limit, 1.2ms turn-on time	Better efficiency in low-dropout 3.3V systems; lacks USB-compliant reverse blocking	Select when lower conduction loss is critical and reverse-current risk is absent.
RT9711CGQW	0.6A current limit, 120mΩ R_DS(ON), no OVP, 1.5ms turn-on, no discharge function	Suitable for cost-sensitive consumer power rails; missing HDMI/USB-specific protections	Choose for non-hot-swap applications where discharge and OVP are not required.

Compared with TPS22965DSGR and RT9711CGQW, AP2331TDW-7 uniquely combines USB-compliant reverse-current blocking, output discharge, and OVP in SC59 - making it optimal for HDMI, USB, and hot-swap designs where fault isolation and plug-and-play reliability are mandatory.

Availability

AP2331TDW-7 is available at Aetrix Electronics and suitable for USB peripheral power switching, HDMI hot-plug detection, and LCD panel power sequencing requiring stable component supply across industrial, computing, and consumer electronics programs.

Supply support for AP2331TDW-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 industrial, computing, and consumer markets.

The AP2331TDW-7 belongs to Diodes' load switch portfolio designed specifically for hot-swap, USB-compliant, and HDMI-enabled systems - emphasizing fault resilience, precise current limiting, and seamless power sequencing.

FAQ

What is the purpose of the internal discharge NMOS in AP2331TDW-7?

The internal 1.8kΩ NMOS discharge path actively pulls the OUT pin to GND when input voltage drops below UVLO, ensuring rapid discharge of output capacitance. This behavior meets HDMI hot-plug detection timing requirements and prevents floating voltages that could cause false HPD assertions or latch-up in downstream receivers.

Does AP2331TDW-7 support simultaneous over-voltage and over-current fault handling?

Yes - AP2331TDW-7 independently monitors both output voltage and load current. OVP triggers at 5.3–5.6V with 15µs debounce; OCP activates at 0.4A (typ) with sub-millisecond response. Faults are handled concurrently: OVP forces immediate shutdown regardless of current level, while OCP maintains current clamp until thermal shutdown intervenes.

How does the reverse-current protection operate under dynamic load conditions?

Reverse-current protection is always active. When V_OUT exceeds V_IN by ≥0.2V, the device detects reverse flow above 0.20–0.25A and initiates a 0.7ms deglitch window. If the condition persists beyond this period, the MOSFET shuts off. Recovery occurs only when V_OUT falls to ≤101% of V_IN, preventing oscillation during transient back-drive events.

Can AP2331TDW-7 be used in automotive infotainment systems?

AP2331TDW-7 operates from –40°C to +85°C ambient and meets AEC-Q200 stress test recommendations for temperature cycling and HBM ESD (3kV), but it is not AEC-Q100 qualified. It is suitable for non-safety-critical infotainment subsystems (e.g., USB media hubs, display power rails) where full automotive qualification is not mandated by OEM design specs.

AP2331TDW-7 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:: Obsolete

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

AP2331TDW-7 FAQ

1.How can I place an order for AP2331TDW-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP2331TDW-7 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 AP2331TDW-7 reliable?

The price and inventory of AP2331TDW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2331TDW-7 is usually 5 days.

3.What payment methods are accepted for AP2331TDW-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2331TDW-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP2331TDW-7?

AP2331TDW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP2331TDW-7 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 AP2331TDW-7?

For technical support, including AP2331TDW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2331TDW-7 requirements.

6.How does Aetrix verify that AP2331TDW-7 is sourced from the original manufacturer or authorized distributors?

All AP2331TDW-7 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 AP2331TDW-7 meets industry standards.

7.What is the process for return or replacement of AP2331TDW-7?

All AP2331TDW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2331TDW-7, 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 AP2331TDW-7 part is unused and in its original packaging.

Return procedure for AP2331TDW-7:

1.Submit a request within 90 days.

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

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