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Alpha & Omega Semiconductor Inc. AOZ1380DI
- Part No.:
- AOZ1380DI
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 20-PowerVFDFN
- Datasheet:
-
AOZ1380DI.pdf
- Description:
- IC USB TYPE-C PROT SWITCH 20DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,345
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Product details
Overview
AOZ1380DI from Alpha & Omega Semiconductor is a dual-function USB Type-C PD protection switch integrating independent 20mΩ sink and 39mΩ source back-to-back N-channel MOSFETs in a single DFN-20L package. It delivers 10A continuous sink current, 3.4–22V sink input range, and programmable 500mA–3.5A source current limit for bidirectional power path control in portable notebooks and ultrabooks.
For engineers reviewing the AOZ1380DI datasheet, pinout, applications, or equivalent options, this device supports Fast Role Swap (FRS), True Reverse Current Blocking (TRCB) in both modes, adjustable soft-start (sink), and open-drain fault flags (FLTB_SNK/FLTB_SRC) critical for USB PD compliance and system-level fault management.
Technical Context
The AOZ1380DI implements two independent, back-to-back N-MOSFET power switches with separate gate drive and charge pump circuits - one optimized for high-voltage sink operation (VBUS→VCHG, 3.4–22V, 20mΩ), the other for low-voltage source operation (V5V→VBUS, 3.4–5.5V, 39mΩ). Each path includes dedicated UVLO, OVLO, thermal shutdown, and TRCB detection logic.
Sink mode uses active-low ENB_SNK with external soft-start capacitor (CSS) and programmable POVP-based OVP (5.8V or 24V); source mode uses active-high EN_SRC, FON-controlled fast turn-on (<100µs), and ILIM-set current limiting. Fault reporting is isolated: FLTB_SNK asserts on sink OVP/TRCB/thermal events; FLTB_SRC asserts on source OCP/thermal faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sink ON Resistance | 20mΩ - Enables ≤10A continuous conduction with <200mW I²R loss at full load. |
| Source ON Resistance | 39mΩ - Supports up to 3.5A source current while limiting conduction loss to <480mW. |
| Sink Operating Voltage | 3.4V to 22V - Covers full USB PD 3.0 sink range including 20V PPS profiles. |
| Source Input Range | 3.4V to 5.5V - Matches standard 5V buck-regulated bus for Type-C source operation. |
| TRCB Threshold (Sink) | 26mV - Blocks reverse current before VCHG exceeds VBUS by >26mV, preventing battery backfeed. |
| TRCB Threshold (Source) | 25mV trip / 40mV release - Ensures clean isolation during VBUS pre-bias and rapid recovery post-TRCB. |
| Fault Response Time | 1µs OVP delay (sink), 10ms OCP delay (source) - Enables precise fault containment without false triggering. |
Pinout & Package
AOZ1380DI is housed in a thermally enhanced 3mm × 5.2mm DFN-20L package with an electrically isolated exposed thermal pad (EXP) serving as the common drain node for both sink switches. The package supports -40°C to +85°C ambient operation and features 36°C/W junction-to-ambient thermal resistance on AOS evaluation board layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,10) | Ground reference | Primary return path for all internal bias and control circuits; must be low-impedance PCB plane connection. |
| V5V (Pins 3,4) | Source input supply | Accepts regulated 3.4–5.5V rail; powers source-path control logic and gate drivers. |
| VCHG (Pins 5,6) | Sink output | Delivers regulated VBUS-derived power to battery charger IC; rated 28V absolute max. |
| VBUS (Pins 14–17) | Common power bus | Shared terminal connecting to USB-C connector; routed internally to VCHG (sink) or V5V (source). |
| ENB_SNK (Pin 9) | Sink enable input | Active-low signal enabling sink path; supports dead-battery operation when pulled low. |
| EN_SRC (Pin 18) | Source enable input | Active-high signal enabling source path; synchronized with FON for Fast Role Swap. |
| FON (Pin 20) | FRS control | Disables internal soft-start and reduces turn-on delay to <100µs for PD role swap compliance. |
| FLTB_SNK (Pin 8) | Sink fault flag | Open-drain output pulled low on sink OVP, TRCB, or thermal fault; requires external pull-up. |
| FLTB_SRC (Pin 19) | Source fault flag | Open-drain output pulled low on source OCP or thermal fault; independent of sink fault reporting. |
| EXP | Exposed thermal pad | Common drain node for sink MOSFETs; must be soldered to isolated copper pour with multiple vias for thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| True Reverse Current Blocking (TRCB) | 26mV threshold in sink mode and 25mV/40mV hysteresis in source mode - prevents backfeed during dead-battery or pre-biased VBUS conditions. |
| Fast Role Swap (FRS) support | FON pin enables <100µs source turn-on with disabled soft-start - meets USB PD 3.0 FRS timing requirements. |
| Programmable sink OVP | POVP pin selects 5.8V (floating) or 24V (grounded) threshold - accommodates legacy 5V and PD 20V sink protection needs. |
| Adjustable source current limit | ILIM pin accepts resistor (4.02kΩ–14.3kΩ) to set OCP threshold from 0.9A to 3.5A - enables flexible system-level current budgeting. |
| Dual independent fault flags | Separate open-drain FLTB_SNK and FLTB_SRC outputs - allows microcontroller to distinguish sink vs. source fault origin without shared logic. |
Applications
| USB-C PD Notebook Power Switch | Ultrabook Dual-Role Charging Hub |
|---|---|
Use Scenario: High-performance laptop supporting USB-C PD charging (up to 20V/5A) and simultaneous power sourcing to peripherals. IC Role / Device Role / Timing Role: Bidirectional power path controller managing VBUS↔VCHG (sink) and V5V↔VBUS (source) with FRS-triggered role reversal. Use Value: Enables seamless transition between charging and powering accessories using single AOZ1380DI, eliminating need for discrete dual-switch solutions. |
Use Scenario: Compact docking station providing 5V power to connected USB devices while drawing power from host laptop via same port. IC Role / Device Role / Timing Role: Source-mode switch delivering regulated 5V to downstream ports; sink-mode switch accepting host-charger input during dock recharging. Use Value: Reduces BOM count and PCB area versus separate source/sink ICs; TRCB prevents backfeed when dock is powered externally. |
| Thunderbolt™ 4 Host Port Protection | Portable Monitor Power Management |
Use Scenario: Thunderbolt 4 host controller requiring robust overvoltage, overcurrent, and thermal protection on its USB-C power delivery interface. IC Role / Device Role / Timing Role: Primary PD protection IC with 24V OVP (POVP grounded), 10A sink capability, and <1µs OVP response to suppress transients from faulty adapters. Use Value: Meets IEC 61000-4-2 ±8kV ESD and IEC 61000-4-5 40V surge immunity - ensures reliability in high-noise docking environments. |
Use Scenario: Battery-powered portable monitor accepting USB-C PD input while supplying 5V to integrated speakers, webcam, and USB-C data hub. IC Role / Device Role / Timing Role: Sink switch (VBUS→VCHG) charges internal Li-ion battery; source switch (V5V→VBUS) powers USB peripherals during battery-only operation. Use Value: 20A pulsed sink current handles CPU/GPU peak loads during video rendering; FRS enables instant role swap when host laptop enters sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-C PD dual-role power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65987D | Integrated PD controller + MCU + USB-C policy engine; requires external FETs for power path; no integrated TRCB or programmable OVP. | Used where full PD 3.0 policy handling, USB data muxing, and firmware-updatable behavior are required - not just power switching. | Choose TPS65987D when full USB-C PD stack implementation is needed; AOZ1380DI is preferred for cost-sensitive, fixed-function PD power path only. |
| RT1711H | Single-function sink-only switch (22mΩ, 10A); no source path or FRS; OVP fixed at 22.5V; lacks FLTB_SRC and ILIM programming. | Applicable only in charge-only systems (e.g., tablets, phones) without power sourcing or role swap requirements. | Select RT1711H for simplified sink-only designs; AOZ1380DI provides full bidirectional capability with independent fault reporting and FRS. |
Compared with TPS65987D and RT1711H, AOZ1380DI uniquely integrates both sink and source paths with TRCB, FRS, and dual fault flags in one DFN-20L package - reducing system complexity where standalone, high-reliability PD power switching is required without embedded policy engine overhead.
Availability
AOZ1380DI is available at Aetrix Electronics and suitable for USB-C PD notebook power switching, ultrabook dual-role hubs, and Thunderbolt™ 4 host port protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AOZ1380DI 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
Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, power ICs, and advanced packaging for power management applications.
The AOZ1380DI belongs to AOS's USB-C PD protection switch product line, designed specifically for compact, thermally constrained portable computing platforms requiring robust bidirectional power path control with minimal external components.
FAQ
What is the maximum continuous current rating for the sink path of AOZ1380DI?
The AOZ1380DI sink path supports 10A continuous current at ambient temperatures from -40°C to +85°C. This rating assumes proper PCB thermal design with the EXP pad connected to a large copper area via multiple vias. The device also sustains 20A pulsed current for 10ms at 2% duty cycle, enabling support for CPU/GPU peak loads in high-end notebooks.
How does AOZ1380DI implement True Reverse Current Blocking (TRCB) in sink mode?
In sink mode, AOZ1380DI monitors the voltage difference between VCHG and VBUS. When VCHG exceeds VBUS by ≥26mV, the sink switch turns off within 500ns and pulls FLTB_SNK low. This prevents battery backfeed into the USB-C port during dead-battery or adapter-disconnect scenarios, ensuring system safety without external circuitry.
Can AOZ1380DI support Fast Role Swap (FRS) functionality, and how is it enabled?
Yes, AOZ1380DI supports FRS via the FON pin. To activate FRS, assert FON high before enabling EN_SRC. This disables internal soft-start and reduces source turn-on time to under 100µs - meeting USB PD 3.0 FRS timing requirements. FON must remain asserted during role swap; no software or MCU intervention is required.
What are the OVP threshold options for the sink path of AOZ1380DI, and how are they selected?
The AOZ1380DI sink OVP threshold is selectable via the POVP pin: grounding POVP sets OVP to 24V (suitable for 20V PD profiles), while leaving POVP floating sets it to 5.8V (for legacy 5V applications). An internal 8µA current source generates the threshold; no external components are needed beyond the ground connection or open-circuit condition.
How does AOZ1380DI handle overcurrent protection in source mode?
In source mode, AOZ1380DI uses the ILIM pin to set overcurrent protection (OCP) threshold from 0.9A to 3.5A via an external resistor (e.g., 14.3kΩ for 1A). When current exceeds the threshold, FLTB_SRC is pulled low after a 10ms delay. During fast turn-on (FON = high), OCP is temporarily disabled to ensure reliable FRS execution without false triggering.
AOZ1380DI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 20-PowerVFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 3.4V ~ 22V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 10A
- Rds On (Typ):
- 39mOhm
- Input Type:
- Non-Inverting
- Features:
- Auto Restart, Slew Rate Controlled, Status Flag
- Fault Protection:
- Over Temperature, Over Voltage, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DFN-EP (3x5.2)
AOZ1380DI FAQ
1.How can I place an order for AOZ1380DI through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1380DI 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 AOZ1380DI reliable?
The price and inventory of AOZ1380DI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1380DI is usually 5 days.
3.What payment methods are accepted for AOZ1380DI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1380DI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1380DI?
AOZ1380DI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1380DI 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 AOZ1380DI?
For technical support, including AOZ1380DI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1380DI requirements.
6.How does Aetrix verify that AOZ1380DI is sourced from the original manufacturer or authorized distributors?
All AOZ1380DI 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 AOZ1380DI meets industry standards.
7.What is the process for return or replacement of AOZ1380DI?
All AOZ1380DI units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1380DI, 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 AOZ1380DI part is unused and in its original packaging.
Return procedure for AOZ1380DI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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