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Diodes Incorporated AP2141WG-7
- Part No.:
- AP2141WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2141WG-7.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:24,821
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Product details
Overview
AP2141WG-7 from Diodes Incorporated is an active-low enable, single-channel, current-limited high-side power switch optimized for USB 2.0 hot-swap applications. It delivers 0.5A continuous load current with 95mΩ typical RDS(ON), 0.8A accurate current limiting, and integrated short-circuit/thermal protection. Used in laptop USB ports and docking stations, it provides controlled 0.6ms rise time and 7ms deglitched fault reporting via open-drain FLG pin.
For engineers reviewing the AP2141WG-7 datasheet, AP2141WG-7 pinout, AP2141WG-7 application, or AP2141WG-7 equivalent, key selection criteria include enable polarity (active-low), thermal shutdown threshold (+140°C), UVLO trip (1.9V typ), reverse current blocking capability, and SOT25 package compatibility with space-constrained USB power delivery designs.
Technical Context
The AP2141WG-7 implements a monolithic N-channel MOSFET high-side switch with integrated current-sense FET, thermal sensing circuitry, and UVLO comparator. Its deglitch logic on the FLG output enforces a 7ms blanking window to suppress false over-current triggers during capacitive inrush.
It operates across 2.7V–5.5V input range with shutdown current ≤1µA, supports reverse current blocking when disabled, and features built-in +25°C thermal hysteresis to prevent oscillation during sustained overload recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 0.8A typical - clamps output current to protect downstream loads and upstream supply during overload |
| RDS(ON) | 95mΩ at 5V/25°C - enables low power loss (≤24mW at 0.5A) in SOT25 package |
| Enable Polarity | Active-low - simplifies direct interface with USB controller GPIOs asserting low to enable port power |
| FLG Blanking Time | 7ms typical - eliminates false fault reports from transient inrush currents up to 10A/s slew rate |
| UVLO Threshold | 1.9V typical - prevents erratic switching during brown-out or hot-insertion before stable VIN is established |
| Thermal Shutdown | +140°C trigger with +25°C hysteresis - ensures safe cycling under sustained short-circuit without latch-up |
| Reverse Leakage | 1µA max at VOUT=5V/VIN=0V - blocks backfeed from powered peripherals into disabled host ports |
Pinout & Package
AP2141WG-7 is supplied in SOT25 (SC-74A) package - a 5-pin, surface-mount, lead-free, RoHS-compliant outline with exposed pad for thermal enhancement. Pin 1 = OUT, Pin 2 = FLG, Pin 3 = EN, Pin 4 = GND, Pin 5 = IN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Switched Output | High-side switched VOUT; all OUT pins must be tied together externally in multi-pin variants |
| 2 (FLG) | Open-Drain Fault Flag | Active-low signal asserted after 7ms deglitch upon over-current or over-temperature event |
| 3 (EN) | Enable Input | Active-low control: device enabled when pulled low; high-impedance when floating or pulled high |
| 4 (GND) | Power Ground | Reference node for internal circuitry and thermal path; must connect to PCB ground plane |
| 5 (IN) | Input Voltage Supply | Primary power input (2.7–5.5V); ties directly to USB VBUS or local 5V rail |
Key Features
| Feature | Design Value |
|---|---|
| Controlled Rise Time | 0.6ms typical - limits inrush current to <1A during hot-plug, reducing stress on connectors and source capacitance |
| No External Components Required | Integrated deglitch, UVLO, thermal sense, and current limit - eliminates need for external RC networks or discrete protection ICs |
| Reverse Current Blocking | 1µA leakage max - prevents backflow from powered peripheral (e.g., smartphone battery) into disabled host port |
| Low Shutdown Current | 1µA max - preserves system standby power budget in always-on USB host applications |
| ESD Robustness | 4kV HBM / 15kV IEC 61000-4-2 - withstands handling and system-level ESD events without external TVS diodes |
Applications
| USB 2.0 Host Port Protection | Laptop Docking Station Power Control |
|---|---|
|
Use Scenario: Single-port USB host on notebook motherboard supplying power to peripherals like mice, keyboards, or flash drives. IC Role / Device Role / Timing Role: High-side power switch enabling/disabling VBUS with current limiting and fault reporting. Use Value: Prevents bus overcurrent faults from disabling entire USB controller; FLG pin alerts firmware to disconnect faulty devices. |
Use Scenario: Docking station providing USB, HDMI, and Ethernet connectivity while drawing power from laptop via USB-C or proprietary connector. IC Role / Device Role / Timing Role: Isolates downstream USB ports from upstream laptop VBUS with controlled ramp-up to avoid inrush tripping laptop OCP. Use Value: Enables hot-plug detection and graceful port disablement without resetting host controller or disrupting other dock functions. |
| Set-Top Box USB Peripheral Interface | Smartphone Charging Hub Power Management |
|
Use Scenario: USB-A port on cable/satellite set-top box powering external storage or streaming dongles. IC Role / Device Role / Timing Role: Current-limited power switch with UVLO ensuring port remains off until stable 5V rail is present post-boot. Use Value: Eliminates "port not recognized" errors caused by marginal VBUS voltage during cold start or brown-out conditions. |
Use Scenario: Multi-port charging hub managing power delivery to smartphones, earbuds, and wearables simultaneously. IC Role / Device Role / Timing Role: Individual channel switch per port, enabling per-port current limiting and independent fault isolation. Use Value: Allows hub firmware to identify and disable only the overloaded port-preserving power to remaining connected devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2036IRHBR | 3-channel USB 2.0 transceiver with integrated 5V switch; higher quiescent current (150µA), no reverse blocking | Designed for full USB 2.0 signal+power hub IC; requires external current-limit resistors | Select when full PHY-level compliance and data switching are required alongside power control |
| TPS2051BDBVR | Active-high enable, 1.5A current limit, 120mΩ RDS(ON), no deglitch on FLAG | Higher current rating but less precise inrush control; FLAG asserts immediately on over-current | Select for non-USB industrial hot-swap where faster fault response outweighs false-trigger risk |
Compared with TUSB2036IRHBR and TPS2051BDBVR, the AP2141WG-7 offers superior USB 2.0 compliance via active-low enable timing, tighter current limit accuracy (±25% vs ±30%), lower RDS(ON), and integrated deglitch-making it optimal for space-constrained, cost-sensitive USB port protection where false fault reporting must be avoided.
Availability
AP2141WG-7 is available at Aetrix Electronics and suitable for USB 2.0 host port protection, laptop docking station power control, and set-top box peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP2141WG-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 AP2141/AP2151 product line was designed specifically for USB 2.0-compliant hot-swap power distribution, emphasizing low RDS(ON), precise current limiting, and robust fault handling in compact packages for portable and embedded systems.
FAQ
What is the maximum continuous load current supported by AP2141WG-7?
The AP2141WG-7 is rated for 0.5A maximum continuous load current per its Recommended Operating Conditions. Although its current limit threshold is 0.8A typical, sustained operation above 0.5A risks exceeding thermal limits in the SOT25 package without enhanced PCB copper area or airflow. Derating is required above +60°C ambient.
Does AP2141WG-7 require external components for basic USB port protection?
No external components are required for core functionality: the 7ms FLG deglitch, UVLO, thermal shutdown, and current limiting are fully integrated. However, Diodes recommends a 0.1µF ceramic capacitor between IN and GND, plus ≥10µF electrolytic on the output for heavy loads-these improve stability and transient immunity but are not mandatory for basic enable/disable operation.
How does the active-low EN pin interface with standard USB host controllers?
The active-low EN pin directly interfaces with USB host controller GPIOs that assert low to enable VBUS power. When the controller pulls EN low, the switch turns on with controlled 0.6ms rise time; when the GPIO goes high-Z or high, the device shuts down with ≤1µA quiescent current. No level-shifting or pull-up resistors are needed for 3.3V or 5V logic domains.
Can AP2141WG-7 be used in USB-C applications?
The AP2141WG-7 is specified for USB 2.0 applications and supports only 5V VBUS operation. It is not compliant with USB-C power delivery protocols (e.g., variable voltage, CC logic, or PD messaging). It may be used downstream of a USB-C PD controller to manage fixed 5V power to legacy USB-A ports-but not as a primary USB-C power switch.
AP2141WG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- 95mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP2141WG-7 FAQ
1.How can I place an order for AP2141WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2141WG-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 AP2141WG-7 reliable?
The price and inventory of AP2141WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2141WG-7 is usually 5 days.
3.What payment methods are accepted for AP2141WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2141WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2141WG-7?
AP2141WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2141WG-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 AP2141WG-7?
For technical support, including AP2141WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2141WG-7 requirements.
6.How does Aetrix verify that AP2141WG-7 is sourced from the original manufacturer or authorized distributors?
All AP2141WG-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 AP2141WG-7 meets industry standards.
7.What is the process for return or replacement of AP2141WG-7?
All AP2141WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2141WG-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 AP2141WG-7 part is unused and in its original packaging.
Return procedure for AP2141WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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