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Diodes Incorporated AP2172AFGEG-7
- Part No.:
- AP2172AFGEG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AP2172AFGEG-7.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:2 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,108
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Product details
Overview
AP2172AFGEG-7 from Diodes Incorporated is a dual-channel, 1.4A current-limiting high-side power switch with active-high enable and integrated output discharge, designed for USB 2.0 hot-swap and capacitive-load applications. It delivers 85mΩ RDS(ON) at 5V, 2µs short-circuit response, and built-in UVLO (2.0V threshold), thermal shutdown (+140°C), and 7ms deglitched fault flag reporting.
For engineers reviewing the AP2172AFGEG-7 datasheet, AP2172AFGEG-7 pinout, AP2172AFGEG-7 application, or AP2172AFGEG-7 equivalent, this device supports precise current-limited power distribution in USB hubs, docking stations, and embedded systems requiring reverse-current blocking, controlled turn-on/turn-off timing, and robust fault reporting without external components.
Technical Context
The AP2172AFGEG-7 integrates two independent pMOS high-side switches with per-channel current sensing, thermal monitoring, and open-drain FLG outputs. Each channel features dedicated EN inputs (active-high), separate OUT and FLG pins, and shared GND and IN connections.
Its discharge control uses an internal nMOS path (RDIS = 100Ω) activated only when disabled or during UVLO, ensuring safe output capacitor discharge without external circuitry. The 0.6ms typical rise time and 7ms FLG blanking are fixed internal parameters-not adjustable via external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit (Typ) | 1.4A per channel - clamps output current to prevent damage during overload or short-circuit events |
| RDS(ON) | 85mΩ (U-DFN3030-8, 5V, +25°C) - enables low conduction loss and minimal self-heating under 1A load |
| Short-Circuit Response | 2µs - fast detection and current limiting initiation minimizes energy dissipation during fault |
| Input Voltage Range | 2.7V to 5.5V - compatible with USB 2.0 VBUS and industrial 3.3V/5V rails |
| Enable Polarity | Active High - simplifies interface with microcontroller GPIOs without level-shifting or inversion logic |
| FLG Blanking Time | 7ms typ - suppresses false overcurrent flags caused by inrush into heavy capacitive loads |
| Discharge Resistance | 100Ω - provides controlled, non-destructive discharge of output capacitance when disabled |
Pinout & Package
AP2172AFGEG-7 is packaged in U-DFN3030-8 (Type E) with exposed thermal pad-optimized for space-constrained USB ports and portable electronics. The exposed pad must be soldered to PCB ground plane for thermal performance but not used as primary current return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | Main supply input (2.7–5.5V); connects to upstream VBUS or DC rail |
| GND | Ground Reference | Analog/digital reference and thermal sink connection point |
| EN1 / EN2 | Channel Enable Inputs | Active-high digital control lines-each independently enables its respective output channel |
| OUT1 / OUT2 | Switched Power Outputs | High-side switched outputs delivering current-limited, discharged power to downstream loads |
| FLG1 / FLG2 | Fault Flag Outputs | Open-drain, active-low signals indicating overcurrent or overtemperature on corresponding channel |
| Exposed Pad | Thermal Interface | Must be connected to solid GND copper area with ≥4 thermal vias for θJA = 60°C/W operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel current limiting | Independent 1.4A per channel with ganged limit up to 2.8A - enables flexible power partitioning across USB ports or peripherals |
| Integrated output discharge | 100Ω internal discharge path activated only when disabled - eliminates need for external bleed resistors in USB-compliant designs |
| UVLO with 2.0V threshold | Prevents switch turn-on until input stabilizes above 2.0V - ensures clean hot-plug sequencing and avoids brownout-induced faults |
| Thermal protection with hysteresis | +140°C shutdown with +25°C hysteresis - enables automatic recovery after transient overload without host intervention |
| 7ms deglitched FLG output | Hardware-based blanking eliminates false flags from capacitive inrush - removes requirement for RC filters or firmware debouncing |
Applications
| USB 2.0 Hub Power Management | Docking Station Load Switching |
|---|---|
Use Scenario: Dual-port USB 2.0 hub supplying power to downstream peripherals while complying with USB specification current limits. IC Role / Device Role / Timing Role: High-side power switch providing per-port current limiting, output discharge, and fault reporting to host controller. Use Value: Ensures USB compliance by limiting each port to ≤1.4A, discharging residual voltage before port disconnect, and signaling overcurrent via FLG without software polling. |
Use Scenario: Docking station distributing 5V power to multiple peripherals (HDMI, Ethernet, USB-A) with independent enable/disable control. IC Role / Device Role / Timing Role: Dual-channel load switch enabling soft-start, reverse-current blocking, and thermal-safe power delivery to hot-pluggable modules. Use Value: Prevents inrush surges during module insertion, blocks backfeed from powered peripherals, and maintains system stability during simultaneous load activation. |
| Laptop ExpressCard Slot Protection | Industrial USB Host Interface |
Use Scenario: Laptop ExpressCard slot requiring hot-plug power control with strict current and thermal safety margins. IC Role / Device Role / Timing Role: High-side switch managing VCC delivery to card interface with controlled rise time and UVLO-enforced power sequencing. Use Value: Limits peak inrush to <1.4A during card insertion, prevents damage from shorted cards via 2µs response, and ensures safe discharge before ejection. |
Use Scenario: Industrial USB host controller powering field devices (sensors, actuators) in harsh environments with wide ambient temperature range. IC Role / Device Role / Timing Role: Robust dual-channel power switch delivering stable 5V with -40°C to +85°C operation, thermal shutdown, and fault flagging. Use Value: Maintains reliable power delivery across extended temperature range, reports faults to PLC or MCU via FLG, and survives repeated short-circuit transients without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel high-side power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCK127G | Single-channel, 2.5A limit, no integrated discharge, 120mΩ RDS(ON), SOT-23-6 package | Requires external discharge circuitry and separate enable logic for dual loads | Select when higher single-channel current capacity is needed and board space permits discrete discharge design |
| TPS2051BDR | Single-channel, 1.5A limit, no discharge, 90mΩ RDS(ON), SO-8, 3.3–5.5V input | No dual-channel integration; requires two units and external FLG OR-ing for combined fault reporting | Choose when TI ecosystem compatibility or legacy SO-8 footprint is required, accepting added component count |
Compared with TCK127G and TPS2051BDR, AP2172AFGEG-7 uniquely integrates dual channels, active-high enable, output discharge, and 7ms hardware deglitching in a thermally efficient 3mm×3mm U-DFN package-reducing BOM count, PCB area, and firmware complexity for USB and hot-swap applications.
Availability
AP2172AFGEG-7 is available at Aetrix Electronics and suitable for USB 2.0 hubs, docking stations, and industrial USB host interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AP2172AFGEG-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 ICs for power management, signal integrity, and connectivity applications.
The AP2172A belongs to Diodes' USB Power Switch product line, engineered specifically for compliant, robust, and space-efficient hot-swap power distribution in consumer and industrial USB systems.
FAQ
What is the maximum continuous load current per channel for AP2172AFGEG-7?
The recommended maximum continuous load current is 1.0A per channel, based on thermal limits and derating for sustained operation at +85°C ambient. While the current limit threshold is 1.4A typical, continuous delivery above 1.0A risks exceeding junction temperature limits without enhanced PCB thermal design.
Does AP2172AFGEG-7 require external components for output discharge functionality?
No. AP2172AFGEG-7 includes an internal 100Ω discharge path activated automatically when the device is disabled or during UVLO. This eliminates the need for external resistors or MOSFETs, reducing BOM count and PCB area while ensuring USB-compliant discharge behavior.
How does the 7ms FLG blanking time improve system reliability?
The 7ms deglitch timeout prevents false overcurrent flags triggered by inrush current into large output capacitors (e.g., 10µF USB loads). By ignoring transient spikes shorter than 7ms, the device avoids unnecessary host-level fault interrupts and enables reliable operation without firmware debouncing or external RC filtering.
Can AP2172AFGEG-7 be used in automotive applications?
AP2172AFGEG-7 is not AEC-Q100 qualified and is specified for industrial temperature range (−40°C to +85°C), not automotive grade. Diodes Incorporated offers automotive-qualified alternatives (e.g., AP2172WQFG-7) with PPAP support and IATF 16949 manufacturing-contact Diodes directly for qualified variants.
AP2172AFGEG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-UDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:2
- 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):
- 1A
- Rds On (Typ):
- 85mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN3030-8 (Type E)
AP2172AFGEG-7 FAQ
1.How can I place an order for AP2172AFGEG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2172AFGEG-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 AP2172AFGEG-7 reliable?
The price and inventory of AP2172AFGEG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2172AFGEG-7 is usually 5 days.
3.What payment methods are accepted for AP2172AFGEG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2172AFGEG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2172AFGEG-7?
AP2172AFGEG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2172AFGEG-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 AP2172AFGEG-7?
For technical support, including AP2172AFGEG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2172AFGEG-7 requirements.
6.How does Aetrix verify that AP2172AFGEG-7 is sourced from the original manufacturer or authorized distributors?
All AP2172AFGEG-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 AP2172AFGEG-7 meets industry standards.
7.What is the process for return or replacement of AP2172AFGEG-7?
All AP2172AFGEG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2172AFGEG-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 AP2172AFGEG-7 part is unused and in its original packaging.
Return procedure for AP2172AFGEG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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