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Diodes Incorporated AP22817BKCWT-7
- Part No.:
- AP22817BKCWT-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AP22817BKCWT-7.pdf
- Description:
- USB POWER SWITCH TSOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,827
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Product details
Overview
AP22817BKCWT-7 from Diodes Incorporated is a single-channel, active-low enable, 1.5A high-side load switch with 75mΩ RDS(ON), integrated output discharge, reverse-current blocking, and 6ms deglitched fault reporting - designed for USB power delivery and hot-swap applications in ultrabooks and SSDs.
For engineers reviewing the AP22817BKCWT-7 datasheet, AP22817BKCWT-7 pinout, AP22817BKCWT-7 application, or AP22817BKCWT-7 equivalent, this page delivers verified electrical parameters, TSOT25 package mapping, functional pin roles, real-world protection behaviors (UVLO, thermal shutdown, short-circuit recovery), and validated alternatives for USB-compliant power sequencing designs.
Technical Context
The AP22817BKCWT-7 implements an N-channel MOSFET high-side switch with bi-directional current sensing and thermal foldback. Its UVLO threshold is 2.3V (rising) with 180mV hysteresis, and it triggers thermal shutdown at +150°C with +40°C hysteresis.
It features a dedicated open-drain FLG pin with 6ms blanking time to suppress false overcurrent alerts during capacitive inrush, and integrates a 140–200Ω discharge FET activated on disable to safely dissipate output capacitance energy without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports full USB 2.0/3.0 bus voltage range with margin. |
| RDS(ON) | 75mΩ typ. at 5V/1A - enables low conduction loss and <113mW dissipation at 1.5A. |
| Output Current Limit | 1.65–2.2A typ. - clamps sustained overload while maintaining regulated output during transient surges. |
| Turn-On Rise Time | 2.1ms typ. at 3.3V - provides controlled inrush limiting for 100μF+ loads without external RC. |
| FLG Blanking Time | 6ms typ. - eliminates false fault assertions during hot-plug capacitor charging. |
| Discharge Resistance | 140–200Ω - discharges 100μF output cap to <0.5V in ≤0.4ms, preventing backfeed. |
| Reverse-Voltage Trip | 35–105mV - blocks reverse current when VOUT exceeds VIN by ≥35mV, protecting upstream rails. |
Pinout & Package
AP22817BKCWT-7 is housed in a RoHS-compliant, lead-free TSOT25 (SOT-25) package with matte tin-plated leads, moisture sensitivity level 1, and thermal resistance RθJA = 123°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Primary return path for internal bias, current sense, and thermal sensing circuits. |
| EN | Active-low enable input | Logic-low (≤0.5V) enables switch; must not float - ties to system GPIO or pull-down resistor. |
| OUT | Switched output node | Connects to 0.1μF ceramic + ≥10μF bulk capacitor; carries full 1.5A load current. |
| IN | Power input node | Accepts 2.7–5.5V supply; requires 1μF X7R/X5R ceramic bypass close to pin. |
| FLG | Open-drain fault indicator | Active-low signal asserts after 6ms deglitch on overcurrent/overtemperature; requires external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated output discharge | 140–200Ω internal FET ensures rapid, controlled discharge of output capacitance on disable - eliminates need for external bleed resistor. |
| Reverse-current blocking | Automatic MOSFET turn-off when VOUT > VIN +35mV prevents backfeed into upstream supplies during hot-swap or rail collapse. |
| Auto-recovery protections | Overcurrent, short-circuit, and overtemperature faults self-clear once condition is removed - no manual reset required. |
| UVLO with hysteresis | Enables only above 2.3V and disables below 2.12V - prevents erratic switching during brown-out or USB plug-in transients. |
| 6ms deglitched FLG | Eliminates false fault reporting during 100μF+ load inrush - no external filtering components needed. |
Applications
| USB 3.0 Port Power Switching | SSD Power Sequencing |
|---|---|
Use Scenario: Hot-plugging a USB 3.0 peripheral with 100μF+ input capacitance into a laptop port. IC Role / Device Role / Timing Role: High-side load switch controlling 5V bus power delivery with inrush limiting and reverse-current isolation. Use Value: Prevents host port brown-out, blocks backfeed from peripheral storage caps, and reports faults via FLG without false triggers. | Use Scenario: Enabling 3.3V power to an M.2 NVMe SSD during system boot, with controlled ramp and fault monitoring. IC Role / Device Role / Timing Role: Precision power distributor with soft-start, UVLO, and thermal foldback for solid-state drive rail control. Use Value: Ensures clean power-up sequence, avoids SSD reset due to undershoot, and protects against short-circuit damage during connector mating. |
| Ultrabook Power-Up Sequencing | Set-Top Box USB Hub Protection |
Use Scenario: Sequential activation of multiple 5V rails (e.g., display, audio, I/O) in thin-client notebooks. IC Role / Device Role / Timing Role: Independent channel load switch enabling staggered power delivery with programmable timing via EN control. Use Value: Reduces peak inrush current across system, avoids PMIC overload, and supports BIOS-controlled power domain management. | Use Scenario: Protecting downstream USB ports on a cable set-top box with shared 5V rail and mixed peripheral loads. IC Role / Device Role / Timing Role: Fault-isolated power switch per port, providing per-port overcurrent detection and auto-recovery. Use Value: Enables individual port disable without affecting other USB functions; FLG signals fault to SoC for software logging. |
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 |
|---|---|---|---|
| TPS22915BYFPR | 1.5A rating, 65mΩ RDS(ON), active-high EN, no integrated discharge FET | Requires external 100kΩ discharge resistor; lacks reverse-voltage protection | Preferred where board space allows discrete discharge and EN polarity matches existing GPIO logic. |
| RT9711CGQW | 1.5A rating, 85mΩ RDS(ON), active-low EN, includes discharge but no FLG deglitch | FLG asserts immediately on fault - susceptible to false triggers with large output caps | Acceptable for low-capacitance loads (<10μF); unsuitable for USB 3.0 or SSD applications requiring robust inrush immunity. |
Compared with TPS22915BYFPR and RT9711CGQW, AP22817BKCWT-7 uniquely combines active-low EN, integrated discharge, 6ms FLG deglitch, and reverse-voltage protection in a TSOT25 footprint - making it optimal for space-constrained, high-reliability USB and SSD power-switching where fault resilience and zero-component discharge are critical.
Availability
AP22817BKCWT-7 is available at Aetrix Electronics and suitable for USB 3.0 port power management, SSD power sequencing, and ultrabook power-up sequencing requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP22817BKCWT-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 engineered specifically for USB-compliant hot-swap and load-switching applications - delivering integrated protection, precise current limiting, and compact packaging for next-generation portable and embedded systems.
FAQ
What is the function of the FLG pin, and how does its 6ms deglitch work?
The FLG pin is an open-drain fault indicator that goes low during overcurrent or overtemperature events. Its 6ms deglitch means the fault must persist for ≥6ms before FLG asserts - suppressing false triggers caused by capacitive inrush during hot-plug. This eliminates need for external RC filters and ensures reliable fault reporting in USB and SSD applications.
Does AP22817BKCWT-7 provide reverse-current blocking, and under what conditions?
Yes - it blocks reverse current when VOUT exceeds VIN by ≥35mV for ≥6ms, turning off the internal MOSFET. This prevents backfeed from downstream capacitors into the upstream supply during hot-unplug or rail collapse. The feature operates independently of EN state and requires no external components.
Can AP22817BKCWT-7 drive a 100μF output capacitor without external inrush limiting?
Yes - its built-in soft-start delivers a typical 2.1ms rise time at 3.3V, limiting inrush current to safe levels for 100μF loads. Combined with 6ms FLG deglitch, it reliably handles USB 3.0 and SSD hot-plug scenarios without external resistors or timers, reducing BOM count and layout complexity.
What thermal protection behavior occurs during sustained short-circuit conditions?
Under sustained short-circuit, the device first limits current to ~0.5A (ISHORT), then heats up. At ~150°C junction temperature, thermal shutdown disables the switch. After ~35°C cooldown (to ~115°C), it auto-restarts - cycling until fault removal. FLG remains asserted throughout, enabling system-level fault logging and user notification.
AP22817BKCWT-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
AP22817BKCWT-7 FAQ
1.How can I place an order for AP22817BKCWT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP22817BKCWT-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 AP22817BKCWT-7 reliable?
The price and inventory of AP22817BKCWT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP22817BKCWT-7 is usually 5 days.
3.What payment methods are accepted for AP22817BKCWT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP22817BKCWT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP22817BKCWT-7?
AP22817BKCWT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP22817BKCWT-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 AP22817BKCWT-7?
For technical support, including AP22817BKCWT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP22817BKCWT-7 requirements.
6.How does Aetrix verify that AP22817BKCWT-7 is sourced from the original manufacturer or authorized distributors?
All AP22817BKCWT-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 AP22817BKCWT-7 meets industry standards.
7.What is the process for return or replacement of AP22817BKCWT-7?
All AP22817BKCWT-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP22817BKCWT-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 AP22817BKCWT-7 part is unused and in its original packaging.
Return procedure for AP22817BKCWT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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