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Diodes Incorporated AP22654QWU-7
- Part No.:
- AP22654QWU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP22654QWU-7.pdf
- Description:
- LOAD SWITCH TSOT26 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,668
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Product details
Overview
AP22654QWU-7 from Diodes Incorporated is a single-channel AEC-Q100 Grade 1 qualified high-side precision adjustable current-limit power switch in TSOT26 (Type A1) package, delivering up to 3.1A continuous load current with ±12% current-limit accuracy at 1.0A (RLIM = 6.8kΩ), 5µs typical short-circuit response time, and integrated reverse-current blocking, overtemperature, UVLO, and fault reporting - deployed in automotive ECU supply rail switching and USB hot-swap protection.
For engineers reviewing the AP22654QWU-7 datasheet, AP22654QWU-7 pinout, AP22654QWU-7 application, or AP22654QWU-7 equivalent, this device supports precision current-limit programming (0.4–3.56A via ILIM resistor), active-low enable logic, 1ms typical soft-start rise time, and 7ms deglitched FAULT output - critical for robust automotive power distribution and USB-compliant hot-plug systems.
Technical Context
The AP22654QWU-7 integrates a controlled-gate high-side MOSFET driver with slew-rate limiting, thermal shutdown at +155°C (35°C hysteresis), and reverse-voltage comparator trip at 65mV (VOUT – VIN). Its current-limit architecture uses an internal sense FET and external ILIM resistor to set threshold without series resistance penalty.
It implements dual-stage fault handling: immediate current clamping during overcurrent/short-circuit (5µs response), followed by FAULT assertion with 7ms deglitch; reverse-current limiting activates at 150mV differential and clamps IROCP to 0.32A typ; discharge function engages via 500Ω internal path when disabled or under UVLO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Continuous Load Current | 3.1A at TJ ≤ +85°C - supports heavy USB loads and automotive ECUs without external heatsinking |
| Adjustable Current Limit Range | 0.4A to 3.56A (typ) - set via 1.91kΩ–16.9kΩ ILIM resistor; enables precise system-level current budgeting |
| Current-Limit Accuracy | ±12% at 1.0A (RLIM = 6.8kΩ) - ensures predictable OCP behavior across process/temp variations |
| Short-Circuit Response Time | 5µs (typ) - limits energy dissipation during fault events, preserving downstream components |
| RDS(ON) | 50–75 mΩ (typ, TA = +25°C) - minimizes conduction loss and self-heating at full load |
| UVLO Threshold | 2.25V (rising), 2.65V (falling) - prevents erratic operation during brown-out or hot-insertion |
| FAULT Blanking Time | 2–20 ms - suppresses false triggers from transient surges while retaining fast fault detection |
Pinout & Package
TSOT26 (Type A1) package: 6-pin, 1.6mm × 2.9mm × 0.8mm body, exposed thermal pad connected to GND externally for improved power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 6) | Power input | Accepts 3.0–5.5V supply; requires ≥10µF bulk + 0.1µF ceramic bypass near IC for stability |
| GND (Pin 2) | Ground reference | Primary ground return; must connect to external PCB ground plane and exposed pad |
| EN (Pin 4) | Enable control | Active-low logic input - low = ON; high = OFF; leakage < ±2µA ensures low-power disable state |
| FAULT (Pin 3) | Fault indicator | Open-drain active-low output asserted during overcurrent, overtemperature, or reverse-voltage faults |
| ILIM (Pin 5) | Current-limit programming | Sinks current to set threshold; ILIM = 6800/RLIM(kΩ) mA - determines trip point with ±12% tolerance |
| OUT (Pin 1) | Switched output | Drives load; includes reverse-current blocking and internal discharge path (500Ω) when disabled |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation - meets automotive reliability and change-control requirements |
| Reverse-current blocking & limiting | Blocks reverse flow when disabled; limits reverse current to 0.32A typ during enable if VOUT > VIN |
| Built-in soft-start | 1.0ms typical output rise time - eliminates inrush current into large capacitive loads (e.g., 120µF USB) |
| Integrated discharge function | 500Ω internal discharge path - safely drains output capacitance on disable/UVLO, preventing floating rails |
| IEC 61000-4-2 ESD protection | 15kV contact discharge (with external capacitance) - enhances robustness in noisy automotive environments |
Applications
| Automotive ECU Power Distribution | USB 2.0/3.0 Hot-Swap Port Protection |
|---|---|
|
Use Scenario: Supply rail switching for engine control unit sub-modules requiring stable 3.3V/5V distribution with fault containment. IC Role / Device Role / Timing Role: High-side power switch with programmable current limit and thermal shutdown - acts as intelligent fuse and rail supervisor. Use Value: Prevents bus collapse during short circuits; maintains system uptime via constant-current limiting instead of hard shutdown. |
Use Scenario: USB host port power delivery with compliance to USB specification's reverse-current and inrush limits. IC Role / Device Role / Timing Role: Precision current-limited hot-plug controller - enforces 120µF output capacitance requirement and blocks backfeed. Use Value: Eliminates need for discrete reverse-blocking diode and external current-sense circuitry; reduces BOM count by 3+ components. |
| Industrial CAN Bus Node Power Management | Infotainment System Display Backlight Sequencing |
|
Use Scenario: Isolated 5V rail for CAN transceiver and microcontroller in harsh industrial gateways. IC Role / Device Role / Timing Role: Protected power switch with UVLO and 7ms FAULT deglitch - ensures clean power-up and avoids false resets. Use Value: Guarantees reliable startup under fluctuating 24V-to-5V DC-DC output; fault reporting enables diagnostic logging. |
Use Scenario: Controlled power enable for LED backlight drivers in automotive infotainment displays. IC Role / Device Role / Timing Role: Soft-starting high-side switch with adjustable current limit - manages inrush into parallel LED strings. Use Value: Prevents flash-induced voltage droop on shared 5V rail; programmable ILIM avoids overdesign of upstream regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side adjustable current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP22655QWU-7 | Identical specs except active-high EN pin; same ILIM programming, RDS(ON), FAULT behavior, and protection features | Requires inverted enable logic in system firmware/hardware; no change to current-limiting or fault-handling design | Select when host MCU GPIO drives EN high to activate - avoids external inverter needed for AP22654QWU-7 |
| TCK127G,LF | Lower max current (2.5A), wider ILIM range (0.2–4.0A), ±15% accuracy, no reverse-current limiting, 10µs OCP response | Lacks ROCP and reverse-voltage protection; not AEC-Q100 qualified; intended for consumer-grade USB ports | Use only in non-automotive, cost-sensitive designs where reverse-current blocking is handled externally |
Compared with AP22654QWU-7, AP22655QWU-7 offers identical protection and current-setting but simplifies enable interface, while TCK127G,LF trades automotive qualification and reverse-current safety for broader ILIM range and lower cost - making AP22654QWU-7 optimal for AEC-compliant systems demanding full fault coverage.
Availability
AP22654QWU-7 is available at Aetrix Electronics and suitable for automotive ECU power distribution, USB hot-swap port protection, industrial CAN node power management, and infotainment display sequencing requiring stable component supply, AEC-Q100 traceability, and long-term lifecycle support.
Supply support for AP22654QWU-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 solutions, with strong focus on automotive, industrial, and computing markets.
The AP22654QWU-7 belongs to Diodes' precision power switch product line, designed specifically for AEC-Q100-compliant automotive power distribution and USB-compliant hot-plug applications requiring accurate current limiting and comprehensive fault protection.
FAQ
What is the minimum recommended ILIM resistor value and why?
The minimum recommended ILIM resistor is 1.91kΩ, which sets the highest current-limit threshold of 3.56A (typ). Using a lower resistance risks exceeding the device's safe operating area, increasing junction temperature beyond +155°C thermal shutdown threshold and potentially triggering premature shutdown during sustained 3.1A loads. This value also ensures sufficient margin against RLIM tolerance and temperature drift.
How does the FAULT pin behave during a short-circuit event?
During a short-circuit, the FAULT pin asserts low within 5µs (typ) after overcurrent detection, remains asserted for ≥7ms (deglitch blanking time), and deasserts only after current drops below the hysteresis threshold and the blanking timer expires. It stays low during thermal shutdown and reverse-voltage faults, providing unambiguous system-level fault indication without external timing components.
Can AP22654QWU-7 be used without the ILIM resistor?
No - the ILIM pin must be connected to a resistor between 1.91kΩ and 16.9kΩ to define the current-limit threshold. Leaving ILIM floating disables current limiting entirely, causing the device to operate as an unprotected switch vulnerable to catastrophic failure during overload. The internal current-sense circuit requires the external resistor to establish the reference for clamping.
What is the role of the exposed thermal pad in the TSOT26 package?
The exposed thermal pad is internally connected to GND and must be soldered to a dedicated PCB copper pour tied to the system ground plane. It reduces RθJA from 89°C/W to ~50°C/W in typical layouts, enabling reliable 3.1A operation at +85°C ambient. It is not intended as a primary current-carrying path - its sole purpose is thermal dissipation and mechanical stability.
AP22654QWU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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:
- 3V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 3.1A
- Rds On (Typ):
- 50mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Slew Rate Controlled, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Battery, Reverse Current, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-26 (Type A1)
AP22654QWU-7 FAQ
1.How can I place an order for AP22654QWU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP22654QWU-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 AP22654QWU-7 reliable?
The price and inventory of AP22654QWU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP22654QWU-7 is usually 5 days.
3.What payment methods are accepted for AP22654QWU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP22654QWU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP22654QWU-7?
AP22654QWU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP22654QWU-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 AP22654QWU-7?
For technical support, including AP22654QWU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP22654QWU-7 requirements.
6.How does Aetrix verify that AP22654QWU-7 is sourced from the original manufacturer or authorized distributors?
All AP22654QWU-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 AP22654QWU-7 meets industry standards.
7.What is the process for return or replacement of AP22654QWU-7?
All AP22654QWU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP22654QWU-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 AP22654QWU-7 part is unused and in its original packaging.
Return procedure for AP22654QWU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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