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Diodes Incorporated AP22811BW5-7
- Part No.:
- AP22811BW5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP22811BW5-7.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:166,508
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Product details
Overview
AP22811BW5-7 from Diodes Incorporated is a single-channel, active-low enabled, high-side load switch optimized for USB and hot-swap applications. It features 50 mΩ on-resistance, 2.7–5.5 V input range, integrated output discharge, reverse-current blocking, and auto-recovering over-current/short-circuit/over-temperature protection. Used in Ultrabook power sequencing and SSD power rail control.
For engineers reviewing the AP22811BW5-7 datasheet, AP22811BW5-7 pinout, AP22811BW5-7 application, or AP22811BW5-7 equivalent, key selection criteria include enable polarity (active-low), SOT25 package thermal resistance (123 °C/W), 6 ms FLG deglitch timing, controlled 2.1 ms typical rise time, and reverse-voltage trip point of 50 mV.
Technical Context
The AP22811BW5-7 implements an N-channel MOSFET high-side switch with integrated current-sense FET and thermal shutdown circuitry. Its UVLO activates at 2.0 V (rising) with 180 mV hysteresis, and it enforces reverse-current blocking when VOUT − VIN exceeds 50 mV for ≥6 ms.
Protection logic combines fast short-circuit response (<20 µs turn-off delay), auto-recovery current limiting (2.7 A typ. ILIMIT), and thermal cycling with +140 °C shutdown threshold and +35 °C hysteresis. The open-drain FLG pin asserts low after 6 ms deglitch upon fault detection and remains latched until both over-current and over-temperature conditions clear.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports full USB 2.0/3.0 bus voltage compliance and wide-system rail compatibility. |
| RDS(ON) | 50 mΩ typ. @ 5 V, 1 A - enables <100 mW conduction loss at 2 A, critical for thermally constrained SOT25 layouts. |
| Output Rise Time | 2.1 ms typ. - soft-start prevents inrush current spikes into large capacitive loads (e.g., 120 µF SSD rails). |
| FLG Blanking Time | 6 ms typ. - suppresses false fault reporting during transient load surges without external RC components. |
| Reverse-Voltage Trip | 50 mV (VOUT − VIN) - blocks backfeed from powered peripherals before host power-up in hot-plug systems. |
| Thermal Shutdown | +140 °C with +35 °C hysteresis - ensures safe cycling under sustained short-circuit without latch-off or manual reset. |
| Discharge Resistance | 110 Ω typ. - actively discharges output capacitance to <0.5 V within 0.4 ms when disabled, preventing floating rail issues. |
Pinout & Package
AP22811BW5-7 is housed in a RoHS-compliant, lead-free Green SOT25 (SC-74A) package with exposed pad thermal enhancement. Pin 1 = EN/EN (active-low), Pin 2 = GND, Pin 3 = FLG, Pin 4 = IN, Pin 5 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (EN/EN) | Enable Control Input | Active-low logic interface; pulls low ≤0.5 V to activate switch; must not float; ties to system GPIO or pull-down for default OFF. |
| Pin 2 (GND) | Power Ground Reference | Primary return path for internal current sense, thermal sensor, and FLG driver; requires low-impedance PCB ground plane connection. |
| Pin 3 (FLG) | Fault Reporting Output | Open-drain flag asserted low during over-current or over-temperature events after 6 ms deglitch; requires external pull-up to VIN or compatible rail. |
| Pin 4 (IN) | Input Power Supply | Connects to 2.7–5.5 V source; requires 1 µF ceramic bypass capacitor placed adjacent to pin to suppress supply transients. |
| Pin 5 (OUT) | Switched Output Rail | Delivers controlled power to load; requires 0.1 µF ceramic + ≥10 µF bulk capacitor at pin to ensure stability and short-circuit immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in Soft-Start | 0.6 ms typical rise time - eliminates inrush current peaks that could trip upstream fuses or destabilize shared power rails. |
| Integrated Output Discharge | 90–130 Ω discharge path - ensures rapid, controlled discharge of output capacitance to prevent residual voltage hazards during hot removal. |
| Reverse Current Blocking | Auto-shutdown at 50 mV VOUT−VIN - prevents backfeeding from downstream circuits, eliminating need for external blocking diodes. |
| Auto-Recovery Protection | Over-current, short-circuit, and over-temperature faults self-clear once condition resolves - no manual reset or power cycle required. |
| No External Components Required | 6 ms FLG deglitch, UVLO, and discharge function implemented internally - reduces BOM count and layout area in space-constrained designs. |
Applications
| Ultrabook Power Sequencing | SSD Power Rail Control |
|---|---|
|
Use Scenario: Controlled power-up/down of auxiliary rails (e.g., USB-C PD, display interface) during system resume/suspend transitions. IC Role / Device Role / Timing Role: High-side load switch enabling precise timing of rail activation with 2.1 ms rise time and 20 µs turn-off delay. Use Value: Prevents cross-rail contention and inrush-induced voltage droop on main 3.3 V/5 V supplies during multi-rail sequencing. |
Use Scenario: Isolating SSD VCC power during hot-plug insertion or firmware update to avoid data corruption. IC Role / Device Role / Timing Role: Hot-swap controller with reverse-current blocking and 6 ms FLG deglitch to tolerate plug-in transients. Use Value: Eliminates need for external TVS and series diode while ensuring clean power ramp and fault isolation per SATA/PCIe spec. |
| USB Peripheral Port Protection | Set-Top Box USB Hub Management |
|
Use Scenario: Individual port power control in USB 3.0 hubs to meet BC1.2 charging and enumeration requirements. IC Role / Device Role / Timing Role: Current-limited power switch enforcing 2.7 A max load with auto-recovery short-circuit protection. Use Value: Maintains USB compliance under fault conditions without disabling entire hub; FLG pin signals faults to host controller. |
Use Scenario: Managing power to USB peripherals (e.g., streaming sticks, storage) in consumer STB platforms with thermal constraints. IC Role / Device Role / Timing Role: Thermally robust SOT25 load switch delivering 2 A continuous with 123 °C/W RθJA for fanless enclosures. Use Value: Enables reliable operation at +85 °C ambient without derating, supporting compact, sealed STB mechanical designs. |
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 |
|---|---|---|---|
| AP22811AW5-7 | Active-high enable (vs. active-low B version); identical electrical specs, pinout, and protection features. | Requires inverted GPIO signal or level-shifter in existing active-low control architectures. | Select only if system enable logic is natively active-high and board layout allows direct substitution without signal inversion. |
| TCK107AG,TL | Lower RDS(ON) (25 mΩ), higher ILIMIT (3.5 A), but no reverse-voltage protection or integrated discharge function. | Suitable for high-current, non-hot-swap applications where backfeed risk is absent and external discharge circuitry is acceptable. | Prefer when minimizing conduction loss is primary and reverse-blocking/discharge are handled elsewhere in the design. |
Compared with AP22811AW5-7, the B-version offers native compatibility with standard active-low enable logic, while TCK107AG,TL trades reverse-protection and discharge integration for lower on-resistance-making AP22811BW5-7 optimal for USB-compliant hot-swap where safety and simplicity outweigh marginal efficiency gains.
Availability
AP22811BW5-7 is available at Aetrix Electronics and suitable for Ultrabook power sequencing, SSD hot-plug management, and USB peripheral port protection requiring stable component supply across industrial and consumer electronics programs.
Supply support for AP22811BW5-7 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 computing, industrial, and consumer markets.
The AP22811 family targets USB-compliant hot-swap and power-distribution applications, emphasizing integrated protection, small-footprint packaging, and zero-external-component fault management for space- and reliability-critical designs.
FAQ
What is the enable polarity of AP22811BW5-7?
The "B" suffix denotes active-low enable: the device turns ON when the EN/EN pin is pulled low (≤0.5 V) and turns OFF when pulled high (≥1.5 V). This matches common microcontroller GPIO defaults and simplifies interface with systems using pull-down reset schemes. No external inverter is needed.
Does AP22811BW5-7 require external components for basic operation?
No external components are required for core functionality: UVLO, soft-start, FLG deglitch, discharge, and protection features are fully integrated. Only two mandatory external capacitors are needed - a 1 µF ceramic on IN and a 0.1 µF ceramic on OUT - both placed adjacent to their respective pins per layout guidelines.
How does the reverse-voltage protection operate?
When VOUT exceeds VIN by ≥50 mV for ≥6 ms, the internal MOSFET shuts off to block reverse current. Recovery occurs automatically when the reverse condition ends. This prevents backfeed from powered peripherals into a powered-down host, satisfying USB On-The-Go and hot-plug safety requirements.
Can AP22811BW5-7 drive a 2 A load continuously at +85°C ambient?
Yes. With RDS(ON) = 65 mΩ max at +85°C and RθJA = 123 °C/W in SOT25, power dissipation at 2 A is 260 mW, yielding junction temperature rise of ~32°C above ambient - well below the +140°C thermal shutdown threshold. Derating is unnecessary for this condition.
AP22811BW5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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):
- 50mOhm
- Input Type:
- 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
AP22811BW5-7 FAQ
1.How can I place an order for AP22811BW5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP22811BW5-7 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 AP22811BW5-7 reliable?
The price and inventory of AP22811BW5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP22811BW5-7 is usually 5 days.
3.What payment methods are accepted for AP22811BW5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP22811BW5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP22811BW5-7?
AP22811BW5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP22811BW5-7 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 AP22811BW5-7?
For technical support, including AP22811BW5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP22811BW5-7 requirements.
6.How does Aetrix verify that AP22811BW5-7 is sourced from the original manufacturer or authorized distributors?
All AP22811BW5-7 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 AP22811BW5-7 meets industry standards.
7.What is the process for return or replacement of AP22811BW5-7?
All AP22811BW5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP22811BW5-7, 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 AP22811BW5-7 part is unused and in its original packaging.
Return procedure for AP22811BW5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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