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Diodes Incorporated AP22818BKCWT-7
- Part No.:
- AP22818BKCWT-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AP22818BKCWT-7.pdf
- Description:
- USB POWER SWITCH TSOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
AP22818BKCWT-7 from Diodes Incorporated is a 2.0A single-channel high-side load switch with active-low enable, 75mΩ RDS(ON), 2.7V–5.5V input range, and integrated reverse-current blocking, overcurrent/overtemperature/short-circuit protection - designed for USB power delivery and hot-swap control in ultrabooks and SSDs.
For engineers reviewing the AP22818BKCWT-7 datasheet, AP22818BKCWT-7 pinout, AP22818BKCWT-7 application, or AP22818BKCWT-7 equivalent, this device delivers controlled 2.0A switching with 6ms deglitched fault reporting, 0.6ms typical rise time, and output discharge - critical for robust power sequencing in space-constrained consumer and telecom systems.
Technical Context
The AP22818BKCWT-7 implements a thermally protected N-channel MOSFET high-side switch with bi-directional current sensing and UVLO (2.3V threshold, 180mV hysteresis). Its internal deglitch circuit suppresses false overcurrent triggers for ≥6ms, enabling reliable operation with heavy capacitive loads without external filtering.
It integrates reverse-voltage detection (trip at 70mV ΔVOUT–IN), auto-recovery overcurrent limiting (2.7A typ.), and thermal shutdown at +150°C with +40°C hysteresis. The active-low EN pin accepts logic-level inputs (VIL ≤ 0.5V, VIH ≥ 1.5V) and drives an open-drain FLG output with 30Ω on-resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current Rating | 2.0A continuous - supports high-capacitance USB ports and SSD power rails without derating at +85°C ambient. |
| RDS(ON) | 75mΩ max @ 5VIN, 1A - minimizes conduction loss (≤75mW at 1A) and self-heating in TSOT25 package. |
| Input Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V system rails, including USB 2.0/3.0 VBUS and embedded PMIC outputs. |
| Enable Polarity | Active-low (EN̅) - directly interfaces with low-active GPIOs or reset controllers without level-shifting. |
| FLG Blanking Time | 6ms typ. - prevents false fault latching during inrush or transient overload, eliminating need for external RC filters. |
| Output Discharge Resistance | 140–200Ω - safely discharges 10μF output caps to <0.5V in ≤0.4ms, preventing backfeed and voltage hold-up. |
| UVLO Threshold | 2.3V rising, 2.12V falling - ensures clean turn-on only after stable rail establishment and prevents brownout-induced glitches. |
Pinout & Package
AP22818BKCWT-7 is housed in a RoHS-compliant, lead-free TSOT25 (SOT-25-5) package with matte tin-plated leads, 0.013g mass, and moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Low-impedance return path for switch current and internal bias; must connect to solid ground plane. |
| 2 IN | Input voltage supply | Accepts 2.7–5.5V rail; requires 1μF ceramic bypass capacitor placed adjacent to pin. |
| 3 OUT | Switched output | Drives load; requires 0.1μF + ≥10μF output capacitance to stabilize during hot-swap events. |
| 4 EN | Active-low enable input | Pulled low to disable; high-Z when floating - must be externally biased to avoid unintended turn-on. |
| 5 FLG | Open-drain fault indicator | Asserts low on overcurrent/overtemperature; requires external pull-up (typically 10kΩ to VIN). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated output discharge | 140–200Ω internal resistor enables rapid, controlled discharge of output caps without external FET or resistor. |
| Reverse-current blocking | Automatic MOSFET turn-off when VOUT > VIN + 70mV - prevents backfeed in multi-rail systems and shared-bus architectures. |
| Auto-recovery protection | Overcurrent, short-circuit, and overtemperature faults clear automatically once condition resolves - no manual reset required. |
| Thermally efficient package | TSOT25 RθJA = 123°C/W - sustains 2.0A continuous current with ≤35°C temperature rise at +25°C ambient. |
| 6ms deglitched FLG | Hardware-based blanking eliminates false fault reporting during capacitive inrush - removes need for external timing components. |
Applications
| Ultrabook Power Sequencing | USB 3.0 Port Protection |
|---|---|
|
Use Scenario: Controlled power-up/down of discrete USB 3.0 controller ICs and PHYs during system suspend/resume cycles. IC Role / Device Role / Timing Role: High-side load switch managing VBUS delivery with precise 0.6ms rise time and reverse-current isolation. Use Value: Prevents backfeed into disabled USB controllers and eliminates inrush-induced rail droop across shared 5V domains. |
Use Scenario: Hot-plug protection for downstream USB 3.0 ports exposed to accidental short circuits or ESD events. IC Role / Device Role / Timing Role: Fault-tolerant power gate with 6ms deglitched FLG reporting and auto-recovery short-circuit limiting. Use Value: Sustains 2.0A peak load while clamping short-circuit current to 0.5A and asserting fault within 6ms - preserving host controller integrity. |
| SSD Power Management | Set-Top Box Rail Switching |
|
Use Scenario: Isolating 3.3V or 5V power to NVMe or SATA SSD modules during firmware updates or thermal throttling. IC Role / Device Role / Timing Role: Load switch with integrated discharge ensuring safe SSD power-down and eliminating residual VOUT hold-up. Use Value: Enables full power cycling of SSDs without risk of data corruption from lingering output voltage or reverse current. |
Use Scenario: Independent enable/disable of auxiliary 3.3V rails powering tuners, demodulators, or HDMI transceivers in STB mainboards. IC Role / Device Role / Timing Role: Single-channel high-side switch with UVLO and thermal shutdown for unattended long-term reliability. Use Value: Guarantees rail stability during brownouts and prevents thermal runaway in sealed enclosures operating up to +85°C ambient. |
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 |
|---|---|---|---|
| AP22818AKCWT-7 | Active-high enable (EN), identical electrical specs and package | Requires high-active GPIO or inverted control signal; same thermal and protection behavior | Select when system MCU uses active-high enable logic and no external inverter is available. |
| TCK107AG,LF | 1.5A rating, 90mΩ RDS(ON), 2.5–5.5V range, no integrated discharge | Lacks output discharge and reverse-voltage protection; requires external resistor for discharge path | Choose only if lower current (≤1.5A) suffices and board space allows adding discharge resistor. |
Compared with AP22818AKCWT-7, the B-version offers direct compatibility with low-active control buses; versus TCK107AG, it delivers higher current, lower RDS(ON), and full integrated protection - reducing BOM count and improving system-level robustness in USB and SSD applications.
Availability
AP22818BKCWT-7 is available at Aetrix Electronics and suitable for ultrabook power sequencing, USB 3.0 port protection, and SSD power management requiring stable component supply, full RoHS compliance, and AEC-Q200-aligned manufacturing rigor.
Supply support for AP22818BKCWT-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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with design, manufacturing, and test facilities across Asia and the US.
The AP22818 belongs to Diodes' load switch product line - engineered for USB, hot-swap, and power-domain isolation applications demanding fast turn-on, reverse-current blocking, and autonomous fault recovery.
FAQ
What is the maximum continuous output current for AP22818BKCWT-7 at +85°C ambient?
The AP22818BKCWT-7 is rated for 2.0A continuous output current under recommended operating conditions (TA ≤ +85°C, VIN = 5V, RDS(ON) ≤ 95mΩ). Derating is not required up to +85°C due to its 123°C/W thermal resistance and thermal shutdown at +150°C junction temperature.
Does AP22818BKCWT-7 require external components for overcurrent fault debouncing?
No. The device integrates a 6ms hardware deglitch timer on the FLG output, which suppresses transient overcurrent events such as capacitive inrush without requiring external RC networks or microcontroller firmware intervention.
How does the output discharge function operate, and what is its effective resistance?
When EN is de-asserted, an internal 140–200Ω discharge path connects OUT to GND, actively draining stored charge from output capacitors. This ensures VOUT falls below 0.5V within 0.4ms for a 1μF load - eliminating need for external discharge FETs or resistors.
Can AP22818BKCWT-7 be used in automotive infotainment systems?
While AP22818BKCWT-7 meets industrial temperature (-40°C to +85°C) and reliability standards (UL Recognized, IEC60950-1 CB certified), it is not AEC-Q100 qualified. For automotive applications, Diodes offers pin-compatible AEC-Q100 variants - contact your local representative for PPAP-capable versions.
AP22818BKCWT-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):
- 2A
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
AP22818BKCWT-7 FAQ
1.How can I place an order for AP22818BKCWT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP22818BKCWT-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 AP22818BKCWT-7 reliable?
The price and inventory of AP22818BKCWT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP22818BKCWT-7 is usually 5 days.
3.What payment methods are accepted for AP22818BKCWT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP22818BKCWT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP22818BKCWT-7?
AP22818BKCWT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP22818BKCWT-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 AP22818BKCWT-7?
For technical support, including AP22818BKCWT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP22818BKCWT-7 requirements.
6.How does Aetrix verify that AP22818BKCWT-7 is sourced from the original manufacturer or authorized distributors?
All AP22818BKCWT-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 AP22818BKCWT-7 meets industry standards.
7.What is the process for return or replacement of AP22818BKCWT-7?
All AP22818BKCWT-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP22818BKCWT-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 AP22818BKCWT-7 part is unused and in its original packaging.
Return procedure for AP22818BKCWT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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