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Diodes Incorporated AP2166SG-13
- Part No.:
- AP2166SG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2166SG-13.pdf
- Description:
- IC PWR SWITCH P-CHANNEL 1:2 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,924
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Product details
Overview
AP2166SG-13 from Diodes Incorporated is a dual-channel, active-low-enable, high-side USB power switch with 1.5A current limiting, 90mΩ on-resistance (MSOP-8EP), and integrated short-circuit/thermal protection. It operates from 2.7V–5.5V input, delivers controlled 0.6ms rise time, and supports hot-swap in USB 2.0-compliant host/hub applications.
For engineers reviewing the AP2166SG-13 datasheet, AP2166SG-13 pinout, AP2166SG-13 application, or AP2166SG-13 equivalent, key selection criteria include enable polarity (active-low), dual independent fault reporting (FLG1/FLG2), reverse current blocking, UVLO threshold (1.9V typ), and thermal shutdown at +140°C with +25°C hysteresis.
Technical Context
The AP2166SG-13 implements two independent high-side N-channel MOSFET switches with dedicated EN1/EN2 inputs and open-drain FLG1/FLG2 outputs. Each channel features current-limit sensing via internal sense FETs-not external resistors-enabling accurate 1.5A trip threshold and 20µs short-circuit response.
Its UVLO circuit disables both switches below 1.9V input, while the 7ms deglitch on FLG outputs prevents false fault reporting during capacitive inrush. Thermal protection cycles the output off at +140°C junction temperature and re-enables only after cooling by +25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 1.5A typical; clamps output current to safe level during overload without device damage |
| RDS(ON) | 90mΩ typical (MSOP-8EP, VIN=5V, IOUT=1A); minimizes conduction loss and self-heating |
| Rise Time | 0.6ms typical (CL=1µF, RLOAD=10Ω); enables soft-start for hot-plug surge control |
| UVLO Threshold | 1.9V typical; ensures switch remains off until stable input rail is established |
| Thermal Shutdown | +140°C junction temperature; protects against sustained overloads with +25°C hysteresis |
| Shutdown Current | 1µA maximum; reduces system standby power in disabled state |
| Flag Blanking | 7ms typical; suppresses false overcurrent reports from transient inrush currents |
Pinout & Package
AP2166SG-13 is supplied in SO-8 package with exposed pad (non-electrical ground path, must be externally connected to GND for thermal management). Pin functions are validated per Diodes DS31814 Rev. 4–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 / EN2 | Active-low enable inputs | Direct logic-level control of each channel; low = ON, high = OFF |
| FLG1 / FLG2 | Open-drain fault indicators | Pull-down on overcurrent/over-temperature; requires external pull-up resistor |
| OUT1 / OUT2 | High-side switched outputs | Deliver regulated VIN to downstream loads with reverse-current blocking |
| IN | Main power input | Accepts 2.7V–5.5V supply; feeds both channels and internal bias circuitry |
| GND | Power and signal reference | Common return path; exposed pad must connect to PCB ground plane for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable/fault paths | EN1/EN2 and FLG1/FLG2 allow asymmetric control and diagnostics per USB port |
| Reverse current blocking | Prevents backfeed from powered downstream devices into main supply rail |
| No external components for deglitch | Integrated 7ms blanking eliminates need for RC filters on FLG lines |
| UL Recognized & CB Certified | Meets IEC60950-1 safety requirements for end-equipment integration |
| Green packaging | Halogen- and antimony-free compound (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| USB Host Hubs | Hot-Swap Backplanes |
|---|---|
Use Scenario: Dual-port desktop USB hub with local 5V supply powering downstream peripherals. IC Role / Device Role / Timing Role: High-side power switch controlling VBUS delivery per port; enables/disables power under host controller command. Use Value: Prevents bus overcurrent faults by limiting each port to 1.5A and reporting faults via FLG pins to USB controller. | Use Scenario: Industrial backplane where PCIe or mezzanine cards are inserted/removed under power. IC Role / Device Role / Timing Role: Hot-plug inrush limiter; soft-starts card power with controlled 0.6ms voltage ramp. Use Value: Eliminates supply rail droop and connector arcing by limiting peak inrush to <1.5A and blocking reverse current. |
| Laptop Docking Stations | Set-Top Box USB Ports |
Use Scenario: Multi-interface docking station supplying power to USB peripherals, Ethernet, and display ports. IC Role / Device Role / Timing Role: Independent power gate for USB-A ports; coordinated with system PMIC via EN1/EN2 signals. Use Value: Enables selective port disable during sleep states, reducing standby current to ≤1µA per channel. | Use Scenario: Consumer STB with front-panel USB ports for media playback and firmware updates. IC Role / Device Role / Timing Role: Overcurrent-protected VBUS switch with UVLO ensuring no power delivery until 5V rail stabilizes. Use Value: Complies with USB 2.0 specification while preventing damage from shorted cables or faulty peripherals. |
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 |
|---|---|---|---|
| AP2176SG-13 | Active-high enable (vs. AP2166SG-13's active-low); identical current limit, RDS(ON), and protection features | Requires inverted enable logic from host controller; otherwise drop-in compatible in SO-8 footprint | Select when system GPIOs drive EN high to activate power |
| TPS2051BDR | Single-channel, 1.5A, 120mΩ RDS(ON), no reverse blocking, 3.3V–5.5V range | Requires two units for dual-port use; lacks FLG deglitch and thermal hysteresis specs | Use only if active-low enable is unavailable and dual independent fault reporting is not required |
Compared with AP2176SG-13, AP2166SG-13 saves board space in active-low control systems without requiring level-shifting; versus TPS2051BDR, it delivers true dual-channel integration, reverse-current blocking, and robust 7ms fault blanking-critical for USB-compliant hot-swap reliability.
Availability
AP2166SG-13 is available at Aetrix Electronics and suitable for USB host hubs, laptop docking stations, and set-top box peripheral ports requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AP2166SG-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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for consumer, computing, and industrial markets.
The AP2166/AP2176 family targets USB 2.0-compliant power distribution, delivering dual-channel hot-swap capability with integrated protection-designed specifically for host/hub and embedded peripheral port applications.
FAQ
What is the function of the exposed pad on the AP2166SG-13 SO-8 package?
The exposed pad is a thermal pad-not an electrical ground terminal-and must be soldered to a PCB copper pour connected to system GND. It lowers thermal resistance (θJA = 110°C/W) but must not serve as the primary current return path. Diodes specifies it for enhanced heat dissipation only.
Does AP2166SG-13 support simultaneous switching of both channels?
Yes. EN1 and EN2 operate independently, allowing synchronized or staggered turn-on. When both are asserted low, both OUT1 and OUT2 ramp up with matched 0.6ms rise time (CL = 1µF, RLOAD = 10Ω), enabling coordinated power sequencing across dual USB ports.
How does the 7ms FLG blanking time prevent false overcurrent detection?
The internal deglitch circuit holds FLG low for 7ms after initial fault detection, ignoring transient inrush spikes (e.g., from 68µF output caps charging). Only sustained overcurrent (>7ms) pulls FLG active, eliminating need for external RC filters while maintaining fast 20µs short-circuit response.
Can AP2166SG-13 be used with 3.3V-only systems?
No. Its input voltage range is 2.7V–5.5V, but USB VBUS compliance requires 4.75V–5.25V operation. At 3.3V input, RDS(ON) rises to 120mΩ (typ), increasing conduction loss and thermal stress-making it unsuitable for 3.3V bus applications per USB 2.0 spec.
AP2166SG-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):
- 100mOhm
- Input Type:
- Non-Inverting
- Features:
- 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
AP2166SG-13 FAQ
1.How can I place an order for AP2166SG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2166SG-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 AP2166SG-13 reliable?
The price and inventory of AP2166SG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2166SG-13 is usually 5 days.
3.What payment methods are accepted for AP2166SG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2166SG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2166SG-13?
AP2166SG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2166SG-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 AP2166SG-13?
For technical support, including AP2166SG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2166SG-13 requirements.
6.How does Aetrix verify that AP2166SG-13 is sourced from the original manufacturer or authorized distributors?
All AP2166SG-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 AP2166SG-13 meets industry standards.
7.What is the process for return or replacement of AP2166SG-13?
All AP2166SG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2166SG-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 AP2166SG-13 part is unused and in its original packaging.
Return procedure for AP2166SG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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