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Diodes Incorporated AP22655QWU-7
- Part No.:
- AP22655QWU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP22655QWU-7.pdf
- Description:
- LOAD SWITCH TSOT26 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,613
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Product details
Overview
AP22655QWU-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, supporting 3.0V–5.5V input, up to 3.1A continuous load current, ±12% current-limit accuracy at 1.0A (RLIM = 6.8kΩ), and active-high enable logic. It delivers reverse-current blocking, overcurrent/overtemperature/short-circuit protection, and 7ms deglitched FAULT reporting for automotive ECU supply rail switching.
For engineers reviewing the AP22655QWU-7 datasheet, AP22655QWU-7 pinout, AP22655QWU-7 application, or AP22655QWU-7 equivalent, key selection criteria include programmable current limit (0.4–3.56A via ILIM resistor), fast 5µs short-circuit response, controlled 1.0ms rise time, reverse-voltage trip point (65mV), and thermal shutdown at +155°C with +35°C hysteresis.
Technical Context
The AP22655QWU-7 integrates a precision current-sense FET and slew-rate-controlled gate driver to enforce constant-current limiting during overload while minimizing inrush. Its UVLO (2.25V typ) and thermal shutdown (+155°C) operate independently of enable state, ensuring fail-safe behavior during input brownout or sustained fault conditions.
Reverse-protection circuitry includes both ROVP (65mV VOUT–VIN threshold) and ROCP (0.32A typ reverse-current limit), with automatic recovery after fault removal. The open-drain FAULT output features 7ms deglitching and asserts low during overcurrent, overtemperature, or reverse-voltage events - no external components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports standard automotive 3.3V/5V rails and USB-compliant supplies. |
| Max Continuous Load Current | 3.1A at TJ ≤ +85°C - enables robust power distribution in ECU modules with heavy capacitive loads. |
| Adjustable Current Limit | 0.4A to 3.56A (typ) - set by external RLIM (1.91kΩ–16.9kΩ); 1.0A achieved with 6.8kΩ ±1% resistor. |
| Short-Circuit Response Time | 5µs (typ) - ensures rapid current clamping before downstream components sustain damage. |
| RDS(ON) | 50mΩ (typ) at +25°C - minimizes conduction loss and self-heating under full load. |
| Thermal Shutdown Threshold | +155°C with +35°C hysteresis - prevents latch-up and enables automatic recovery after cooling. |
| FAULT Blanking Time | 7ms (typ) - suppresses false trips during transient inrush or brief overload spikes. |
| Reverse-Voltage Trip Point | 65mV (VOUT – VIN) - detects backfeed from powered peripherals before damaging host circuitry. |
Pinout & Package
TSOT26 (Type A1) package with exposed thermal pad connected internally to GND; requires external solder connection to PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 6) | Power Input | Connects to 3.0–5.5V supply; requires ≥0.1µF bypass capacitor and ≥10µF bulk capacitance near IC. |
| GND (Pin 2) | Ground Reference | Primary signal and power return; must be tied to exposed pad and system ground plane. |
| EN (Pin 4) | Enable Control | Active-high logic input; drives internal driver when pulled ≥1.5V (VIH) relative to GND. |
| FAULT (Pin 3) | Fault Reporting | Open-drain output asserted low during OCP, OTP, or ROVP; 7ms deglitch built-in. |
| ILIM (Pin 5) | Current-Limit Programming | Sinks current to set ILIMIT; RLIM value determines trip threshold per ILIM = 6800/RLIM(kΩ) mA. |
| OUT (Pin 1) | Switched Output | Delivers regulated current to load; requires local 0.1µF bypass and ≥10µF output capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 (−40°C to +125°C ambient), PPAP-capable, manufactured in IATF 16949 facilities. |
| Reverse Current Blocking | Active during shutdown; reverse-current limiting (0.32A typ) engages when VOUT > VIN by >65mV. |
| Controlled Turn-On | 1.0ms typical rise time with soft-start - eliminates voltage droop and reduces EMI during hot-plug. |
| Integrated Discharge Path | 500Ω internal nMOS discharge resistor - safely drains output capacitance when disabled or under UVLO. |
| ESD Robustness | 15kV IEC 61000-4-2 (system level), 2kV HBM, 1.5kV CDM - suitable for harsh automotive environments. |
| Protection Coverage | Simultaneous UVLO, OCP, SCP, OTP, ROVP, ROCP, and FAULT reporting - no external supervision needed. |
Applications
| Automotive ECU Power Distribution | USB Type-A Port Protection |
|---|---|
|
Use Scenario: Distributing 5V power to multiple ECUs (e.g., body control, lighting, HVAC) from a central domain controller with strict current budgeting. IC Role / Device Role / Timing Role: High-side current-limited switch enforcing per-rail current caps and isolating faults to prevent cascading failures. Use Value: Enables precise 1.0A–2.4A current limits per ECU rail using discrete RLIM resistors, eliminating need for external current-sense amplifiers or microcontroller-based monitoring. |
Use Scenario: Protecting downstream USB peripherals (e.g., infotainment displays, telematics modems) from overcurrent, reverse feed, and hot-plug transients. IC Role / Device Role / Timing Role: Hot-swap power switch with 5µs short-circuit response and 7ms FAULT deglitching to meet USB BC 1.2 and automotive EMC requirements. Use Value: Meets USB 2.0 specification requiring ≥120µF output capacitance while maintaining safe inrush and preventing bus collapse during plug-in events. |
| ADAS Camera Module Supply | Infotainment Display Backlight Rail |
|
Use Scenario: Powering 12MP+ camera modules with large decoupling banks where inrush current must be limited to avoid triggering upstream fuse or PMIC shutdown. IC Role / Device Role / Timing Role: Precision current limiter with 1.0ms controlled rise time and reverse-current blocking to prevent image sensor latch-up during power sequencing. Use Value: Limits peak inrush to <1.5A during startup while sustaining 1.2A steady-state, avoiding false OCP trips that would disrupt camera initialization sequences. |
Use Scenario: Driving LED backlight strings in center-stack displays where reverse-current flow from illuminated LEDs into the supply must be blocked during sleep mode. IC Role / Device Role / Timing Role: Reverse-voltage protected high-side switch with 65mV ROVP threshold and automatic recovery to maintain display black-level integrity. Use Value: Prevents LED-induced backfeed from degrading MCU VDD or causing unintended wake-up, eliminating need for external Schottky diodes or MOSFETs. |
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 |
|---|---|---|---|
| AP22654QWU-7 | Active-low enable (EN), identical current-limit range, RDS(ON), protections, and package. | Requires inverted logic drive; used where system controller outputs active-low enable signals. | Select when existing MCU GPIO or ASIC output is active-low and cannot be reconfigured. |
| TCK112G,LF | Fixed 2.0A current limit, no ILIM programming; 40mΩ RDS(ON); smaller DFN1212-4 package. | Lacks adjustable current limit and reverse-current limiting; rated only to +105°C ambient. | Choose for cost-sensitive non-automotive applications where fixed 2A limit suffices and space is constrained. |
Compared with AP22654QWU-7, AP22655QWU-7 offers native compatibility with active-high control architectures, simplifying interface design; versus TCK112G, it provides field-programmable current thresholds and full AEC-Q100 Grade 1 qualification essential for ECU-grade reliability.
Availability
AP22655QWU-7 is available at Aetrix Electronics and suitable for automotive ECU power distribution, USB port protection, and ADAS camera module supply requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP22655QWU-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, protection, and signal integrity solutions for automotive, industrial, and computing markets.
The AP22655QWU-7 belongs to Diodes' AEC-Q100-qualified precision power switch product line, engineered specifically for automotive domain controllers and ECU power rail management where programmable current limiting and multi-fault protection are mandatory.
FAQ
What is the minimum recommended RLIM value for AP22655QWU-7, and why?
The minimum recommended RLIM is 1.91kΩ, which sets the highest current-limit threshold of 3.56A (typ). Using lower resistance risks exceeding the device's maximum junction temperature under sustained load due to increased power dissipation in the internal MOSFET. This value also ensures stable operation within the specified ±12% accuracy band at high current settings.
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 and remains asserted for the duration of the fault plus 7ms deglitch time. It deasserts automatically once the fault clears and the deglitch timer expires. No external pull-up is required beyond the standard 10kΩ used in reference designs.
Can AP22655QWU-7 be used without the ILIM resistor?
No - the ILIM pin must be connected to GND through a resistor between 1.91kΩ and 16.9kΩ. Leaving ILIM floating or unconnected disables current-limit functionality and may cause uncontrolled current flow during faults, violating safety requirements and voiding AEC-Q100 compliance.
What is the role of the exposed thermal pad in the TSOT26 package?
The exposed pad is internally connected to GND and serves as the primary thermal conduction path. It must be soldered to a dedicated PCB copper pour tied to the system ground plane to achieve the specified RθJA of 89°C/W. Failure to connect it results in excessive junction temperature rise and premature thermal shutdown under load.
AP22655QWU-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)
AP22655QWU-7 FAQ
1.How can I place an order for AP22655QWU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP22655QWU-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 AP22655QWU-7 reliable?
The price and inventory of AP22655QWU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP22655QWU-7 is usually 5 days.
3.What payment methods are accepted for AP22655QWU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP22655QWU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP22655QWU-7?
AP22655QWU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP22655QWU-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 AP22655QWU-7?
For technical support, including AP22655QWU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP22655QWU-7 requirements.
6.How does Aetrix verify that AP22655QWU-7 is sourced from the original manufacturer or authorized distributors?
All AP22655QWU-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 AP22655QWU-7 meets industry standards.
7.What is the process for return or replacement of AP22655QWU-7?
All AP22655QWU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP22655QWU-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 AP22655QWU-7 part is unused and in its original packaging.
Return procedure for AP22655QWU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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