My Inquiry
My Account
Diodes Incorporated AP22818AKCWT-7
- Part No.:
- AP22818AKCWT-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AP22818AKCWT-7.pdf
- Description:
- USBPOWERSWITCHTSOT25T&R3K
- Quantity:
- Payment:
- Shipping:
Inventory:7,052
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP22818AKCWT-7 from Diodes Incorporated is a 2.0A single-channel high-side load switch optimized for USB and hot-swap applications, featuring 75mΩ RDS(ON), 2.7V–5.5V input range, integrated output discharge, reverse-current blocking, and active-low enable logic in a TSOT25 package. It delivers controlled power sequencing in ultrabooks and SSDs with auto-recovery overcurrent, short-circuit, overtemperature, and UVLO protection.
For engineers reviewing the AP22818AKCWT-7 datasheet, AP22818AKCWT-7 pinout, AP22818AKCWT-7 application, or AP22818AKCWT-7 equivalent, key selection criteria include its 2.0A current limit, 6ms FLG deglitch timing, 0.6ms typical rise time, and TSOT25 thermal performance (RθJA = 123°C/W) for compact, high-reliability power distribution designs.
Technical Context
The AP22818AKCWT-7 implements a thermally protected N-channel MOSFET high-side switch with bi-directional current sensing and integrated discharge FET. Its UVLO threshold is 2.3V (rising) with 180mV hysteresis, and it uses a deglitched open-drain FLG output to report overcurrent/overtemperature faults after a 6ms blanking window.
It supports reverse-voltage protection via a comparator that trips at 70mV (typ.) VOUT–VIN, triggering MOSFET turn-off within 5ms. The device maintains constant-current limiting during overload (2.7A typ. ILIMIT at 4.5V VOUT) and cycles thermally at ~150°C with ~40°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 2.0A max - supports high-capacitance USB loads without external current sensing |
| RDS(ON) | 75mΩ typ. at 5V - enables low conduction loss and <150mW dissipation at 2A |
| Input Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V system rails including USB 2.0/3.0 |
| Enable Polarity | Active-low (EN) - direct interface with standard GPIOs asserting low to enable |
| FLG Blanking Time | 6ms typ. - suppresses false fault reporting during capacitive inrush transients |
| Output Discharge Resistance | 170Ω typ. - ensures safe VOUT decay below 0.5V in <0.4ms with 1μF load |
| UVLO Threshold | 2.3V rising / 2.12V falling - prevents erratic switching during brown-out or hot-plug ramp-up |
| Thermal Shutdown | 150°C trip / 110°C recovery - provides cyclic fault containment without latch-up |
Pinout & Package
AP22818AKCWT-7 is housed in a RoHS-compliant, lead-free TSOT25 (SOT-25) package with matte tin-plated leads solderable per MIL-STD-202 Method 208 (e3). Dimensions: 2.9mm × 1.6mm × 0.85mm, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power Ground Reference | Primary return path for internal control circuitry and discharge FET; must be connected to low-impedance system ground plane |
| 2 EN | Active-Low Enable Input | GPIO-compatible control: logic low (≤0.5V) enables switch; floating prohibited; internal pull-down not present |
| 3 OUT | Switched Output Terminal | Drives downstream load; requires 0.1μF ceramic + ≥10μF bulk capacitor to GND for stability and short-circuit immunity |
| 4 IN | Input Power Supply | Connects to 2.7–5.5V rail; requires 1μF X7R/X5R ceramic bypass capacitor placed adjacent to pin |
| 5 FLG | Open-Drain Fault Flag | Active-low indicator for overcurrent/overtemperature; requires external pull-up (e.g., 10kΩ to VIN) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Output Discharge | 170Ω on-chip discharge path eliminates need for external resistor, ensuring rapid, controlled VOUT decay upon disable |
| Reverse-Current Blocking | Automatic MOSFET turn-off when VOUT > VIN +70mV prevents backfeed into upstream supplies during hot-swap or standby |
| Auto-Recovery Protections | Overcurrent, short-circuit, and overtemperature faults self-clear once condition resolves-no manual reset required |
| Controlled Rise Time | 0.6ms typical tR limits inrush current to ≤2.7A, eliminating need for external soft-start circuitry |
| No External Components Required | 6ms FLG deglitch, UVLO, discharge, and protection logic are fully integrated-reduces BOM count and layout area |
Applications
| USB Power Delivery in Ultrabooks | SSD Power Sequencing |
|---|---|
Use Scenario: Hot-plug insertion of USB peripherals into thin-client ultrabooks with strict inrush and ESD requirements. IC Role / Device Role / Timing Role: High-side load switch enabling/disabling 5V bus power with controlled slew rate and reverse-current isolation. Use Value: Prevents host port damage from capacitive inrush and backfeed; 6ms FLG blanking avoids false fault interrupts during plug-in transients. | Use Scenario: Controlled power-up/down of NVMe SSD modules in portable storage enclosures. IC Role / Device Role / Timing Role: Single-pole power gate managing VCC power delivery with precise UVLO and thermal margin. Use Value: Ensures clean power ramp with <0.6ms rise time and automatic shutdown during overtemp events common in confined SSD housings. |
| Notebook System Rail Management | Set-Top Box Peripheral Power Control |
Use Scenario: Independent power control of USB-C ports and card readers in multi-rail notebook platforms. IC Role / Device Role / Timing Role: Load switch providing isolated 5V distribution with fault reporting to EC firmware via FLG. Use Value: Enables firmware-level diagnostics using FLG status; 2.0A rating supports simultaneous charging + data negotiation. | Use Scenario: Selective powering of HDMI receivers, tuners, or USB hubs in consumer STB mainboards. IC Role / Device Role / Timing Role: High-efficiency power gate with reverse-voltage blocking to prevent cross-rail interference between subsystems. Use Value: Eliminates need for discrete diodes or MOSFETs; 75mΩ RDS(ON) reduces heat generation in thermally constrained chassis. |
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 |
|---|---|---|---|
| AP22818WKCWT-7 | Same silicon, active-high enable (EN), identical electrical specs and package | Requires high-asserted GPIO instead of low-asserted; no change to protection or timing behavior | Select when system control logic uses active-high signaling and board layout allows pin-compatible substitution |
| TCK107AG,LF | 2.0A rating, but higher RDS(ON) (100mΩ), no integrated discharge FET, 10ms FLG blanking | Lacks output discharge and has slower fault response; requires external RC network for soft-start | Choose only if lower cost outweighs need for autonomous discharge and tighter transient immunity |
Compared with AP22818WKCWT-7, the AP22818AKCWT-7 offers identical performance with inverted enable polarity-ideal for legacy GPIO assignments. Versus TCK107AG,LF, it delivers superior thermal efficiency, faster fault blanking, and full integration-reducing design risk in space-constrained USB and SSD applications.
Availability
AP22818AKCWT-7 is available at Aetrix Electronics and suitable for USB power delivery, SSD power sequencing, and notebook rail management requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AP22818AKCWT-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, consumer, and industrial markets.
The AP22816/17/18 family targets 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 maximum continuous output current supported by AP22818AKCWT-7?
The AP22818AKCWT-7 supports up to 2.0A continuous output current under recommended operating conditions (TA ≤ +85°C, VIN = 5V). Its 75mΩ RDS(ON) limits power dissipation to ~300mW at 2A, enabling reliable operation in TSOT25 without forced airflow. Derating is required above +85°C ambient per the RθJA = 123°C/W thermal metric.
Does AP22818AKCWT-7 require external components for basic operation?
No external components are required for core functionality: the 6ms FLG deglitch, UVLO, output discharge, and protection features are fully integrated. However, mandatory external capacitors include a 1μF ceramic on IN–GND and a 0.1μF + ≥10μF capacitor on OUT–GND to ensure stability, inrush control, and short-circuit robustness per the datasheet layout guidelines.
How does the FLG pin behave during an overcurrent event?
During overcurrent or overtemperature fault, the open-drain FLG pin pulls low after a nominal 6ms deglitch period and remains low until both fault conditions are cleared. It does not latch-once the load returns to safe limits, FLG releases high (open) automatically. An external pull-up resistor (e.g., 10kΩ to VIN) is required for proper logic-level interpretation by host controllers.
Can AP22818AKCWT-7 be used in automotive applications?
The AP22818AKCWT-7 is not AEC-Q100 qualified and is intended for commercial/industrial applications only. Diodes Incorporated offers automotive-grade variants (e.g., AP22818Q) with PPAP support, IATF 16949 manufacturing, and extended temperature validation. For automotive use, contact Diodes directly to evaluate qualified alternatives meeting AEC-Q100 Grade 2 or 3 requirements.
AP22818AKCWT-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:
- N/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-25
AP22818AKCWT-7 FAQ
1.How can I place an order for AP22818AKCWT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP22818AKCWT-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 AP22818AKCWT-7 reliable?
The price and inventory of AP22818AKCWT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP22818AKCWT-7 is usually 5 days.
3.What payment methods are accepted for AP22818AKCWT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP22818AKCWT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP22818AKCWT-7?
AP22818AKCWT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP22818AKCWT-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 AP22818AKCWT-7?
For technical support, including AP22818AKCWT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP22818AKCWT-7 requirements.
6.How does Aetrix verify that AP22818AKCWT-7 is sourced from the original manufacturer or authorized distributors?
All AP22818AKCWT-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 AP22818AKCWT-7 meets industry standards.
7.What is the process for return or replacement of AP22818AKCWT-7?
All AP22818AKCWT-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP22818AKCWT-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 AP22818AKCWT-7 part is unused and in its original packaging.
Return procedure for AP22818AKCWT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP22818AKCWT-7 Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
