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Diodes Incorporated AP2311SN-7
- Part No.:
- AP2311SN-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP2311SN-7.pdf
- Description:
- IC PWR SWITCH P-CH 1:1 6DFN2020
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
AP2311SN-7 from Diodes Incorporated is a single-channel, active-high enable, current-limited high-side power switch optimized for USB and hot-swap applications. It delivers 2.0A continuous load current with 2.5A accurate current limiting, 70mΩ typical RDS(ON) at 5V, and integrated output discharge. Used in LCD TVs, set-top boxes, and docking stations to protect against short circuits, over-temperature, reverse current, and inrush surges.
For engineers reviewing the AP2311SN-7 datasheet, AP2311SN-7 pinout, AP2311SN-7 application, or AP2311SN-7 equivalent, key selection considerations include enable polarity (active-high), U-DFN2020-6 package thermal performance, 2µs short-circuit response, and 7ms FLG deglitch timing - critical for robust USB port protection design.
Technical Context
The AP2311SN-7 integrates a P-channel MOSFET high-side switch with real-time current sensing via a dedicated sense FET, enabling precise 2.5A current limiting without external resistors. Its UVLO circuit activates at 2.0V (typ) with 50mV hysteresis, ensuring reliable turn-on only after stable input rail establishment.
Thermal shutdown triggers at +140°C with +20°C hysteresis, causing automatic cycling until fault removal; the open-drain FLG output reports both over-current and over-temperature events after a fixed 7ms deglitch window, eliminating false trips during capacitive load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 2.5A typical - clamps output current precisely to prevent damage during sustained overload or short circuit. |
| RDS(ON) | 70mΩ at VIN = 5V, TA = +25°C - minimizes conduction loss and self-heating under full 2A load. |
| Short-Circuit Response | 2µs - enables rapid current limiting before energy dissipation exceeds safe SOA limits. |
| Input Voltage Range | 2.7V to 5.5V - supports standard USB 2.0/3.0 VBUS and 3.3V/5V system rails. |
| Enable Polarity | Active-high - simplifies interface with microcontroller GPIOs without level-shifting or inversion logic. |
| FLG Blanking Time | 7ms typical - suppresses transient over-current pulses from heavy capacitive loads, avoiding false fault reporting. |
| Output Discharge | Integrated N-MOS discharge path - safely drains residual VOUT capacitance when disabled, preventing floating outputs. |
| UVLO Threshold | 2.0V rising, 1.95V falling - ensures controlled startup/shutdown during brown-out or hot-plug events. |
Pinout & Package
AP2311SN-7 uses the U-DFN2020-6 package: 2.0mm × 2.0mm, 0.5mm pitch, 0.55mm height, exposed thermal pad. Designed for high-density PCB layouts with low thermal resistance (θJA = 90°C/W with recommended layout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Voltage Input | Main power input; requires ≥0.1µF ceramic capacitor to GND for stability and EMI suppression. |
| 2 (GND) | Ground Reference | Primary signal and power return; must be connected to PCB ground plane with low-inductance path. |
| 3 (EN) | Enable Control | Active-high digital input; drives internal driver stage - logic high ≥2V enables switch, low ≤0.8V disables. |
| 4 (FLG) | Fault Reporting | Open-drain output asserted low during over-current or over-temperature; requires external pull-up for system monitoring. |
| 5 (OUT) | Switched Output | High-side switched output; connects to load; all OUT pins tied together internally in multi-pin variants. |
| 6 (NC) | No Connection | Internally unconnected; recommended to tie externally to OUT for noise immunity and mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Output Discharge | Active N-MOS path discharges external output capacitance when disabled - eliminates need for external bleed resistor. |
| 7ms FLG Deglitch | Hardware-based blanking prevents false fault latching during inrush or capacitive transients - no external RC timing required. |
| Reverse Current Blocking | Prevents backflow from VOUT to VIN when disabled - essential for shared-bus or battery-backup systems. |
| Built-in Soft-Start | 0.6ms typical rise time - controls dV/dt to limit inrush current into large downstream capacitors (e.g., 120µF USB loads). |
| Thermal Cycling Protection | +140°C trip with +20°C hysteresis - enables safe auto-recovery from temporary overloads without latch-off or manual reset. |
| USB-Compliant Design | Meets USB 2.0/3.0 power delivery timing and fault response requirements - qualified for certified host/port implementations. |
Applications
| USB Hub Power Management | LCD Monitor Port Protection |
|---|---|
|
Use Scenario: Individual USB ports on a 4-port hub require independent over-current protection and clean power sequencing. IC Role / Device Role / Timing Role: High-side power switch controlling VBUS per port; enables/disables power based on enumeration status and monitors faults via FLG. Use Value: Prevents bus-wide shutdown during single-port short circuit; 2µs response isolates fault before host controller detects error. |
Use Scenario: HDMI/USB-C monitor with integrated USB upstream port supplying power to connected peripherals. IC Role / Device Role / Timing Role: Hot-swap power switch for USB VBUS; provides reverse current blocking and controlled ramp-up during plug-in events. Use Value: Eliminates voltage droop and contact arcing during hot insertion; discharge function clears residual charge before re-enabling. |
| Set-Top Box USB Peripheral Port | Desktop Docking Station Load Switching |
|
Use Scenario: Consumer STB with front-panel USB-A port powering flash drives or Wi-Fi adapters under variable ambient temperature. IC Role / Device Role / Timing Role: Current-limited power switch with thermal foldback; FLG signals MCU on sustained overload or overheating. Use Value: Maintains operation up to +85°C ambient; thermal hysteresis avoids oscillation during brief overloads like drive spin-up. |
Use Scenario: Laptop docking station delivering 5V/2A to multiple peripherals (keyboard, SSD, Ethernet) simultaneously. IC Role / Device Role / Timing Role: Per-rail high-side switch enabling independent power control and fault isolation across USB, SATA, and display interfaces. Use Value: U-DFN2020-6 footprint saves space vs. SO-8; 70mΩ RDS(ON) reduces heat generation in thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-limited power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2301SN-7 | Active-low EN pin; identical RDS(ON), current limit, and package. | Requires inverted control logic - unsuitable where MCU GPIOs lack open-drain or inversion capability. | Select when system-level enable signaling is active-low or legacy-compatible with AP2301 footprint. |
| TCK112G,LF | 2.2A continuous rating, 100mΩ RDS(ON), no integrated discharge, 10ms FLG blanking. | Lacks output discharge and has slower fault response - increases risk of floating outputs and false trips on fast transients. | Use only if discharge function is handled externally and 2µs response is not required for system-level fault containment. |
Compared with AP2301SN-7, AP2311SN-7 offers direct GPIO compatibility without logic inversion; compared with TCK112G, it delivers faster fault response, lower conduction loss, and autonomous discharge - reducing BOM count and improving USB compliance margin.
Availability
AP2311SN-7 is available at Aetrix Electronics and suitable for USB hub designs, LCD monitor power management, and docking station load switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP2311SN-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 AP23xx family targets USB-compliant hot-swap power distribution, emphasizing fast fault response, integrated protection features, and compact packaging for space-constrained host and peripheral equipment.
FAQ
What is the maximum continuous output current supported by AP2311SN-7?
The AP2311SN-7 supports 2.0A maximum continuous load current per its Recommended Operating Conditions. Its 2.5A current limit is a protected trip threshold - sustained operation above 2.0A risks thermal shutdown depending on PCB layout, ambient temperature, and duty cycle. Derating is required above +60°C ambient.
Does AP2311SN-7 require an external pull-up resistor on the FLG pin?
Yes - FLG is an open-drain output and requires an external pull-up resistor (typically 10kΩ to VCC) to generate a valid logic-high signal when no fault is present. Without it, FLG remains floating and cannot reliably indicate fault-free operation to a monitoring microcontroller or FPGA.
Can AP2311SN-7 be used with input voltages below 2.7V?
No - the Absolute Maximum Ratings specify minimum input voltage as -0.3V, but the Recommended Operating Conditions define 2.7V as the functional lower limit. Below 2.7V, UVLO may disable the switch unpredictably, and RDS(ON) rises sharply; operation below 2.0V is blocked entirely by UVLO activation.
How does the output discharge function behave during normal operation?
The discharge function is active only when the device is disabled (EN = low). During normal enabled operation, the discharge path is fully off. When disabled, the internal N-MOS transistor turns on, providing ~100Ω discharge resistance to bring VOUT to <0.5V within 0.6ms for a 1µF load - ensuring safe state transitions between power cycles.
AP2311SN-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 6-UDFN Exposed Pad
- 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):
- 2A
- Rds On (Typ):
- 70mOhm
- 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:
- U-DFN2020-6
AP2311SN-7 FAQ
1.How can I place an order for AP2311SN-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2311SN-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 AP2311SN-7 reliable?
The price and inventory of AP2311SN-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2311SN-7 is usually 5 days.
3.What payment methods are accepted for AP2311SN-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2311SN-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2311SN-7?
AP2311SN-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2311SN-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 AP2311SN-7?
For technical support, including AP2311SN-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2311SN-7 requirements.
6.How does Aetrix verify that AP2311SN-7 is sourced from the original manufacturer or authorized distributors?
All AP2311SN-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 AP2311SN-7 meets industry standards.
7.What is the process for return or replacement of AP2311SN-7?
All AP2311SN-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2311SN-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 AP2311SN-7 part is unused and in its original packaging.
Return procedure for AP2311SN-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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