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Diodes Incorporated AP22817BKEWT-7
- Part No.:
- AP22817BKEWT-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AP22817BKEWT-7.pdf
- Description:
- USB POWER SWITCH TSOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP22817BKEWT-7 from Diodes Incorporated is a single-channel, active-low enable, high-side load switch optimized for USB 2.0/3.0 hot-swap and portable power sequencing applications. It delivers 1.5A continuous output current with 75mΩ RDS(ON), integrated reverse-current blocking, overcurrent/overtemperature/short-circuit protection with auto-recovery, and 6ms deglitched fault flag reporting. Used in Ultrabook power-up sequencing and SSD power rail control.
For engineers reviewing the AP22817BKEWT-7 datasheet, AP22817BKEWT-7 pinout, AP22817BKEWT-7 application, or AP22817BKEWT-7 equivalent, this page provides verified functional identity, TSOT25 package mapping, confirmed active-low EN logic, real-world rise time (2.1ms typ.), and validated alternative options for USB-compliant load switching designs.
Technical Context
The AP22817BKEWT-7 implements an N-channel MOSFET high-side switch with integrated current-sense FET for overcurrent detection-no external sense resistor required. Its UVLO threshold is 2.3V (rising) with 180mV hysteresis, ensuring reliable turn-on only after stable input establishment.
Thermal shutdown activates at +150°C with +40°C hysteresis, enabling safe cycling under sustained overload. The 6ms FLG deglitch window suppresses false triggers during capacitive inrush, while the integrated 140Ω discharge path ensures controlled VOUT decay (<0.4ms to <0.5V) when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Rating | 1.5A continuous - supports USB 3.0 bus-powered peripherals and SSD VCCIO rails. |
| RDS(ON) | 75mΩ max at 5V/25°C - minimizes conduction loss and thermal rise in 1.5A loads. |
| Enable Polarity | Active-low (EN̅) - compatible with standard GPIOs asserting low to enable power delivery. |
| FLG Response | Open-drain, active-low with 6ms deglitch - prevents false fault reporting during hot-plug transients. |
| Input Voltage Range | 2.7V to 5.5V - covers full USB 2.0/3.0 VBUS range and 3.3V system rails. |
| Reverse Current Blocking | Enabled via internal comparator (trip: 70mV typ.) - eliminates backfeed from downstream capacitors. |
| Rise Time | 2.1ms typical (CL = 4.7μF, RLOAD = 10Ω) - ensures controlled inrush without violating USB voltage slew limits. |
Pinout & Package
AP22817BKEWT-7 is housed in a RoHS-compliant, lead-free TSOT25 (SOT-25) package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, and thermal resistance RθJA = 123°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference for internal circuitry and thermal dissipation path. |
| 2 | IN | Input voltage supply pin - requires 1μF ceramic bypass capacitor placed adjacent to IC. |
| 3 | OUT | Switched output - connects to load and must be bypassed with ≥10μF capacitor for USB compliance. |
| 4 | EN̅ | Active-low enable - driven low to activate switch; must not float; pull-down recommended at power-up. |
| 5 | FLG | Open-drain fault flag - asserts low on overcurrent/overtemperature after 6ms blanking window. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Output Discharge | 140Ω internal discharge path - discharges output to <0.5V in ≤0.4ms, eliminating residual voltage hold-up. |
| Auto-Recovery Protections | Overcurrent, short-circuit, and overtemperature faults self-clear once condition is removed - no manual reset needed. |
| Reverse-Voltage Protection | Turns off MOSFET if VOUT > VIN +70mV for ≥6ms - prevents backfeed damage in multi-rail systems. |
| Soft-Start Control | 0.6ms typical rise time - limits inrush dI/dt to avoid input rail collapse during hot-plug events. |
| UVLO with Hysteresis | 2.3V turn-on / 2.12V turn-off - ensures clean power-up sequencing and prevents brown-out oscillation. |
Applications
| USB 3.0 Peripheral Power Switching | Ultrabook Power-Up Sequencing |
|---|---|
|
Use Scenario: Hot-plugging of USB 3.0 external SSDs or docking stations into powered host ports. IC Role / Device Role / Timing Role: High-side load switch controlling VBUS delivery with inrush limiting and reverse-current blocking. Use Value: Prevents host port brown-out, eliminates backfeed into upstream regulators, and enables automatic fault recovery without system intervention. |
Use Scenario: Controlled ramp-up of core voltage rails (e.g., SoC I/O, memory, display) during Ultrabook boot. IC Role / Device Role / Timing Role: Sequenced power distributor with programmable enable timing and fault monitoring via FLG. Use Value: Ensures strict power-up order compliance, isolates faulty rails before damage propagation, and reports faults to EC firmware. |
| SSD VCCIO Rail Management | Tablet PC Battery-Switched Peripherals |
|
Use Scenario: Enabling/disabling 3.3V I/O supply to NVMe or SATA SSD modules based on host activity. IC Role / Device Role / Timing Role: Low-RDS(ON) power gate with fast turn-off (<20µs) and discharge control for rail shutdown. Use Value: Reduces standby leakage by fully disconnecting SSD I/O, avoids floating outputs, and meets PCIe/SATA power state transition timing. |
Use Scenario: Isolating USB-C accessories (keyboard, stylus) from tablet battery when device enters deep sleep. IC Role / Device Role / Timing Role: Active-low controlled switch with ultra-low shutdown current (0.1µA typ.) and reverse-blocking. Use Value: Extends battery life by eliminating parasitic load paths, prevents accessory-induced wake events, and maintains system-level isolation integrity. |
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 |
|---|---|---|---|
| AP22817AKEWT-7 | Active-high enable (EN), identical RDS(ON), current rating, and protection features. | Requires high-asserted control signal instead of low-asserted; matches microcontroller GPIO default states differently. | Select when system control logic uses active-high enable signaling and no level-shifting is desired. |
| TCK112G,LF | 1.2A rating, 90mΩ RDS(ON), no integrated discharge, 10ms FLG blanking, different pinout (SOT-26). | Lacks output discharge and has higher on-resistance - less suitable for high-capacitance USB loads requiring fast VOUT decay. | Choose only if lower cost outweighs need for discharge function and tighter inrush control in non-USB applications. |
Compared with AP22817AKEWT-7, the AP22817BKEWT-7 offers identical performance but inverted enable polarity-critical for direct GPIO compatibility. Against TCK112G, it delivers superior inrush control, faster discharge, and tighter fault blanking, making it preferred for USB and portable power-sensitive designs.
Availability
AP22817BKEWT-7 is available at Aetrix Electronics and suitable for USB 3.0 peripheral power switching, Ultrabook power sequencing, and SSD VCCIO rail management requiring stable component supply, long-term lifecycle support, and RoHS/Green compliance.
Supply support for AP22817BKEWT-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-efficiency power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.
The AP22816/17/18 family was designed specifically for USB-compliant hot-swap and portable power distribution, emphasizing robust fault handling, minimal external components, and thermally efficient packaging for space-constrained mobile platforms.
FAQ
What is the maximum capacitive load the AP22817BKEWT-7 can safely drive?
The AP22817BKEWT-7 supports up to 470μF output capacitance with controlled inrush, as validated in Diodes' datasheet Figure 1 and transient response waveforms. For USB applications, ≥10μF MLCC plus ≥100μF bulk capacitor is required to meet VBUS droop and short-circuit immunity specs. Exceeding 470μF may extend rise time beyond 3.5ms and risk UVLO re-triggering during turn-on.
Does the FLG pin require an external pull-up resistor?
Yes-the FLG pin is open-drain and requires an external pull-up resistor (typically 10kΩ to VIN) to generate a valid logic-high level when no fault is present. Without it, the flag remains floating and cannot reliably indicate normal operation or fault conditions to monitoring circuitry or microcontrollers.
Can AP22817BKEWT-7 be used in automotive applications?
No-AP22817BKEWT-7 is not AEC-Q100 qualified and lacks automotive-grade qualification, extended temperature range (−40°C to +125°C), or PPAP documentation. Diodes explicitly states that automotive use requires contacting their representatives for qualified alternatives such as the AP2265x series, which undergo IATF 16949 manufacturing and AEC-Q100 stress testing.
How does the reverse-voltage protection behave during hot-plug events?
During hot-plug, if the downstream load is pre-charged (e.g., SSD capacitor at 3.3V) while IN is at 0V, the AP22817BKEWT-7 detects VOUT − VIN > 70mV for ≥6ms and disables the MOSFET within 15ms. This blocks reverse current flow, preventing damage to upstream regulators and maintaining isolation until VOUT decays below the trip threshold.
AP22817BKEWT-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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):
- 1.5A
- Rds On (Typ):
- 75mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
AP22817BKEWT-7 FAQ
1.How can I place an order for AP22817BKEWT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP22817BKEWT-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 AP22817BKEWT-7 reliable?
The price and inventory of AP22817BKEWT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP22817BKEWT-7 is usually 5 days.
3.What payment methods are accepted for AP22817BKEWT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP22817BKEWT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP22817BKEWT-7?
AP22817BKEWT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP22817BKEWT-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 AP22817BKEWT-7?
For technical support, including AP22817BKEWT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP22817BKEWT-7 requirements.
6.How does Aetrix verify that AP22817BKEWT-7 is sourced from the original manufacturer or authorized distributors?
All AP22817BKEWT-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 AP22817BKEWT-7 meets industry standards.
7.What is the process for return or replacement of AP22817BKEWT-7?
All AP22817BKEWT-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP22817BKEWT-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 AP22817BKEWT-7 part is unused and in its original packaging.
Return procedure for AP22817BKEWT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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