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Diodes Incorporated AP2172ASG-13
- Part No.:
- AP2172ASG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2172ASG-13.pdf
- Description:
- IC PWR SWITCH P-CHANNEL 1:2 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,281
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Product details
Overview
AP2172ASG-13 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 power distribution. It delivers 85mΩ RDS(ON) at 5V, 2µs short-circuit response, and operates across 2.7V–5.5V input range in SO-8EP package. Used in laptop USB hubs to prevent inrush damage during peripheral insertion.
For engineers reviewing the AP2172ASG-13 datasheet, AP2172ASG-13 pinout, AP2172ASG-13 application, or AP2172ASG-13 equivalent, key selection criteria include per-channel current limit accuracy (1.4A typ), FLG deglitch timing (7ms typ), thermal shutdown threshold (+140°C), and discharge resistance (100Ω typ) - all critical for robust hot-plug system design.
Technical Context
The AP2172ASG-13 integrates two independent pMOS high-side switches with dedicated EN1/EN2 inputs and open-drain FLG1/FLG2 fault flags. Each channel features internal current sensing via sense-FET architecture (no external resistor), enabling precise 1.4A overload trip without added path resistance.
Its UVLO (2.0V typ) ensures switch disable below safe operating voltage, while built-in soft-start yields 0.6ms typical output rise time and 0.05ms fall time. Discharge control activates on disable, providing 100Ω resistive path to safely bleed 10µF output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit (per channel) | 1.4A typical - clamps output current to prevent damage during sustained overload or short circuit |
| RDS(ON) | 85mΩ typical at 5V - minimizes conduction loss and self-heating under 1A load |
| Short-Circuit Response Time | 2µs - enables rapid current limiting before energy dissipation exceeds safe junction limits |
| FLG Blanking Time | 7ms typical - suppresses false fault reporting during capacitor inrush transients |
| Discharge Resistance | 100Ω typical - provides controlled 10µF output capacitor discharge within ~1ms when disabled |
| Input Voltage Range | 2.7V to 5.5V - supports full USB 2.0 bus voltage tolerance and legacy 3.3V/5V system rails |
| Thermal Shutdown Threshold | +140°C - triggers automatic shutdown before permanent silicon damage under sustained overcurrent |
Pinout & Package
AP2172ASG-13 is supplied in SO-8EP (exposed pad) package, optimized for thermal performance in space-constrained USB power delivery applications. The exposed pad must be soldered to PCB ground plane for effective heat dissipation and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | Primary 2.7–5.5V supply rail connection; feeds both channels |
| GND | Ground Reference | Common return path for power, logic, and thermal pad; requires low-impedance PCB connection |
| EN1 / EN2 | Channel Enable Inputs | Active-high digital control lines; independently enable/disable each 1.4A switch |
| OUT1 / OUT2 | Switched Outputs | High-side switched VOUT outputs; drive downstream USB ports or peripherals |
| FLG1 / FLG2 | Fault Flag Outputs | Open-drain signals pulled low during overcurrent or overtemperature events; 7ms deglitch prevents false triggers |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel independent control | Separate EN/FLG pins per channel enable selective port power management in multi-port USB hubs |
| Integrated output discharge | 100Ω internal discharge path eliminates need for external bleeder resistors when disabling ports |
| Reverse current blocking | Prevents backflow from powered downstream loads into upstream supply during fault or disable |
| UVLO with 2.0V threshold | Ensures switch remains off until input stabilizes above minimum USB operational voltage |
| Thermal hysteresis | +25°C hysteresis prevents oscillation during thermal recovery; device re-enables only after cooling to +115°C |
Applications
| USB 2.0 Hub Power Management | Laptop Docking Station Ports |
|---|---|
|
Use Scenario: Managing power to four downstream USB 2.0 ports on a compact hub board with 10µF per-port output capacitance. IC Role / Device Role / Timing Role: Dual high-side switch controlling VBUS delivery per port; enables/disables individual ports under host software control. Use Value: Prevents >1.5A inrush surges during hot-plug of USB storage devices by limiting peak current to 1.4A and ramping voltage over 0.6ms. |
Use Scenario: Isolating USB-C alternate mode peripherals (HDMI, Ethernet) from main system rail in a 12W dock. IC Role / Device Role / Timing Role: High-side power gate with fast fault reporting; FLG signals overcurrent to MCU before thermal shutdown occurs. Use Value: Enables real-time port disable within 2µs of short detection, protecting host controller and maintaining uptime of unaffected ports. |
| Set-Top Box USB Peripherals | Industrial USB I/O Module |
|
Use Scenario: Powering USB-connected IR blasters, flash drives, and Bluetooth adapters in consumer STB with limited thermal margin. IC Role / Device Role / Timing Role: Dual-channel current-limited switch with integrated discharge; eliminates residual VBUS after port disable. Use Value: Ensures complete output discharge (<100ms) to meet USB compliance for safe peripheral removal without risk of arcing or data corruption. |
Use Scenario: Providing isolated 5V power to field-replaceable USB-connected sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Robust hot-swap controller with UL recognition and AEC-Q200-aligned reliability attributes. Use Value: Delivers certified overcurrent, overtemperature, and UVLO protection across -40°C to +85°C ambient, supporting unattended 24/7 operation. |
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 |
|---|---|---|---|
| AP2162ASG-13 | Identical specs except active-low EN inputs | Requires inverted enable logic from host MCU; unsuitable where firmware cannot invert control signals | Select when existing system uses active-low GPIOs or level-shifting is impractical |
| TCK127BG,TL | Single-channel, 1.5A limit, no integrated discharge, 120mΩ RDS(ON) | Lacks dual-channel integration and output discharge; requires external components for same functionality | Choose only if single-port control suffices and board space allows added discharge circuitry |
Compared with AP2172ASG-13, AP2162ASG-13 offers identical protection and performance but mandates active-low logic, while TCK127BG,TL sacrifices channel count, discharge capability, and on-resistance efficiency - making AP2172ASG-13 optimal for compact dual-port USB systems requiring minimal BOM and guaranteed discharge behavior.
Availability
AP2172ASG-13 is available at Aetrix Electronics and suitable for USB 2.0 hub designs, laptop docking stations, and set-top box peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AP2172ASG-13 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP2172A product line targets USB-compliant hot-swap power distribution, delivering integrated protection and precise current limiting for consumer, computing, and industrial peripheral interfaces.
FAQ
What is the maximum continuous load current per channel for AP2172ASG-13?
The recommended maximum continuous load current per channel is 1.0A, as specified in the datasheet's "Available Options" table. Although the current limit threshold is 1.4A typical, sustained operation above 1.0A risks exceeding thermal limits in standard SO-8EP layouts without enhanced heatsinking.
Does AP2172ASG-13 require external components for short-circuit protection?
No external components are required for basic short-circuit protection. The device integrates current sensing, 2µs response, 7ms FLG deglitch, and thermal shutdown. Only input/output ceramic bypass capacitors (0.1–1µF) are mandatory per the application guidelines.
How does the output discharge function operate and what is its design impact?
The discharge function activates automatically when EN is deasserted or during UVLO, connecting a 100Ω internal path between OUT and GND. This discharges 10µF output capacitance in under 1ms, eliminating residual voltage that could cause arcing or data corruption during hot removal of USB peripherals.
Can AP2172ASG-13 be used in automotive applications?
AP2172ASG-13 is not AEC-Q100 qualified and lacks automotive-specific qualification documentation. Diodes Incorporated explicitly states that automotive use requires contacting their representatives for PPAP-capable, IATF 16949-manufactured alternatives - this part is intended for commercial and industrial USB power applications only.
AP2172ASG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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):
- 90mOhm
- 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:
- 8-SOP
AP2172ASG-13 FAQ
1.How can I place an order for AP2172ASG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2172ASG-13 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 AP2172ASG-13 reliable?
The price and inventory of AP2172ASG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2172ASG-13 is usually 5 days.
3.What payment methods are accepted for AP2172ASG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2172ASG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2172ASG-13?
AP2172ASG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2172ASG-13 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 AP2172ASG-13?
For technical support, including AP2172ASG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2172ASG-13 requirements.
6.How does Aetrix verify that AP2172ASG-13 is sourced from the original manufacturer or authorized distributors?
All AP2172ASG-13 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 AP2172ASG-13 meets industry standards.
7.What is the process for return or replacement of AP2172ASG-13?
All AP2172ASG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2172ASG-13, 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 AP2172ASG-13 part is unused and in its original packaging.
Return procedure for AP2172ASG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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