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Alpha & Omega Semiconductor Inc. AOZ1356LI-05
- Part No.:
- AOZ1356LI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 12-UFBGA, WLCSP
- Datasheet:
-
AOZ1356LI-05.pdf
- Description:
- 5V/3A EC POWER SMART PROTECTION
- Quantity:
- Payment:
- Shipping:
Inventory:1,739
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Product details
Overview
AOZ1356LI-05 from Alpha & Omega Semiconductor is a 5V/3A ECPower™ protection switch with True Reverse-Current Blocking (TRCB), programmable current limit, and USB PD Fast Role Swap support. It operates from 3.6V to 5.3V input, features 34mΩ typical RON, 28V-rated VOUT pin, and auto-restart fault recovery-designed for USB PD power source switching in smartphones and portable devices.
For engineers reviewing the AOZ1356LI-05 datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.6–5.3V operating range, 125µA quiescent current, fast 50–100µs turn-on under FON control, TRCB trip at 25mV, and WLCSP-12 package compatibility with high-density mobile PCB layouts.
Technical Context
The AOZ1356LI-05 integrates a low-RON N-channel MOSFET power switch with independent UVLO (3.2–3.55V rising threshold), OVP (5.75–5.9V input lockout), and output over-voltage protection (5.3–5.5V). Its TRCB circuit actively blocks reverse current with 600ns response and 80µs fast recovery, enabling compliant USB PD Fast Role Swap operation.
Control logic supports dual-mode enable: EN pin activates normal operation with 1.4V logic-high threshold, while FON pin enables fast turn-on mode (≤100µs) by bypassing soft-start and temporarily disabling over-current protection-critical for sub-80µs VOUT recovery during role swap events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6V to 5.3V - matches USB PD 5V profile with margin for cable drop and regulation tolerance. |
| Max Output Current | 3.5A - supports full USB PD 15W (5V×3A) delivery without thermal derating at TA=85°C. |
| RON (Typ.) | 34mΩ - limits conduction loss to ≤340mW at 3.5A, enabling compact thermal design in WLCSP-12. |
| VOUT Absolute Max | 28V - allows safe handling of transient surges up to IEC61000-4-5 Level 4 (45V) without external clamping. |
| Quiescent Current | 125µA - minimizes standby power draw in always-on USB-C port controllers. |
| TRCB Trip Threshold | 25mV - detects reverse voltage before significant backfeed occurs, protecting upstream 5V rails. |
| Fast Turn-On Time | 50–100µs - meets USB PD Rev 3.0 Fast Role Swap timing requirement for VOUT ≥4.75V recovery. |
Pinout & Package
AOZ1356LI-05 uses a 1.31mm × 1.81mm WLCP (Wafer-Level Chip-Scale Package) with 12 bumps and 0.4mm pitch-optimized for ultra-thin mobile PCBs requiring minimal board area and low inductance interconnects.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1A, 1B, 1C) | Power Input Supply | Internally tied supply rail for internal regulator and gate drive; requires local 10µF+ ceramic decoupling. |
| GND (2A, 2B, 2C) | Power Ground Reference | Low-impedance return path for switch current and control logic; must connect to solid ground plane. |
| VOUT (3A, 3B) | Switched Power Output | 28V-rated output node delivering regulated 5V to USB-C port; connects directly to adapter load capacitance. |
| EN (3D) | Enable Control Input | Active-high logic interface (1.4V threshold); internally pulled down-requires host MCU GPIO or PMIC control. |
| FON (3C) | Fast-On Mode Select | Activates rapid turn-on path when high; must be asserted ≥100µs before EN to meet FRS timing. |
| ILIM (2D) | Current Limit Set | Connects to GND via 1% resistor (e.g., 14.3kΩ for 1A limit); sets precise over-current threshold per ILIM = 14300/RLIM. |
| FLTB (1D) | Fault Indicator Output | Open-drain active-low flag (0.3V max @3mA sink); signals OCP, OTP, or short-circuit events to host controller. |
Key Features
| Feature | Design Value |
|---|---|
| USB PD Fast Role Swap Support | Enables system-level role reversal (source ↔ sink) within 80µs via coordinated FON/EN timing and TRCB recovery. |
| True Reverse-Current Blocking | Prevents backfeed from VOUT to VIN in both enabled and disabled states-critical for multi-port USB-C systems sharing common 5V rails. |
| Programmable Over-Current Protection | External RLIM resistor sets precise current limit (0.45–3.92A range), eliminating need for fixed-threshold ICs or external sense amplifiers. |
| Auto-Restart Fault Recovery | Self-recovers 24ms after OVP or thermal shutdown removal-no host intervention required for transient fault conditions. |
| Ultra-Low Quiescent Current | 125µA operating / 6µA shutdown current extends battery life in always-connected portable devices. |
Applications
| USB PD Power Source Switch | Smartphone Charging Circuit |
|---|---|
Use Scenario: Managing 5V power delivery from a USB-C port during dynamic role swaps between host and peripheral modes. IC Role / Device Role / Timing Role: Primary power switch enforcing USB PD 3.0 Fast Role Swap timing with ≤80µs VOUT recovery and TRCB isolation. Use Value: Eliminates need for discrete OR-ing diodes or complex analog supervision circuits while maintaining strict PD compliance. | Use Scenario: Protecting the main 5V rail in dual-mode smartphone USB-C ports against over-current, reverse feed, and over-voltage events. IC Role / Device Role / Timing Role: High-side protection switch with programmable current limit and 28V VOUT rating for surge resilience. Use Value: Enables single-chip protection for both charging-in and charging-out paths, reducing BOM count and PCB area. |
| Notebook USB-C Port Controller | Portable SSD Power Management |
Use Scenario: Isolating and regulating 5V bus power in thin-and-light notebooks with multiple USB-C ports sharing a common power domain. IC Role / Device Role / Timing Role: Auto-restart protection switch preventing latch-off during hot-plug transients while supporting FRS for dock negotiation. Use Value: Maintains system uptime during repeated connector insertions without requiring OS-level fault clearing. | Use Scenario: Safeguarding external NVMe SSD enclosures powered via USB-C, where capacitive loads and short-circuit risks are elevated. IC Role / Device Role / Timing Role: Low-RON (34mΩ) switch with soft-start limiting inrush into large output capacitance (≥100µF). Use Value: Prevents input voltage sag and host port reset during SSD spin-up, ensuring reliable enumeration and data transfer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar protection switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS25750RWER | Integrated USB PD controller + power switch; supports PD 3.1, higher voltage (28V), but larger QFN-24 package and higher BOM cost. | Requires full PD policy engine implementation; not drop-in for standalone switch use cases. | Select when full PD 3.1 source negotiation and variable voltage support are required beyond 5V. |
| NCP45780AMUTBG | 3.3–5.5V input, 3.5A, 40mΩ RON, no FRS support; includes adjustable UVLO/OVP but lacks TRCB and fast recovery. | Suitable for basic over-current/over-voltage protection only-cannot replace AOZ1356LI-05 in USB PD FRS designs. | Choose for cost-sensitive non-PD applications where TRCB and sub-100µs recovery are unnecessary. |
Compared with TPS25750RWER and NCP45780AMUTBG, the AOZ1356LI-05 delivers optimal balance of FRS compliance, ultra-small WLCSP-12 footprint, and standalone switch simplicity-making it ideal for space-constrained USB-C source implementations without embedded PD controllers.
Availability
AOZ1356LI-05 is available at Aetrix Electronics and suitable for USB PD power source switching, smartphone charging circuits, and notebook USB-C port protection requiring stable component supply across high-volume consumer electronics programs.
Supply support for AOZ1356LI-05 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 technologies for power management applications.
The AOZ1356LI-05 belongs to AOS's ECPower™ protection switch product line, engineered specifically for USB Type-C and Power Delivery systems requiring fast, reliable, and space-efficient over-current, over-voltage, and reverse-current protection.
FAQ
What is the input voltage range specified for AOZ1356LI-05?
The AOZ1356LI-05 has a confirmed input operating voltage range of 3.6V to 5.3V, as explicitly stated in the datasheet's ordering information table and electrical characteristics section. This range is narrower than the -01/-02 variants (3.4–5.5V) and optimized for USB PD 5V profiles with tighter regulation margins. The UVLO rising threshold is 3.2–3.55V, ensuring robust startup under low-input conditions.
Does AOZ1356LI-05 support True Reverse-Current Blocking (TRCB), and what is its trip point?
Yes, AOZ1356LI-05 implements True Reverse-Current Blocking (TRCB) with a verified trip point of 25mV (VOUT – VVIN) and release point of 40mV (VVIN – VVOUT). This feature prevents backfeed from output to input in both enabled and disabled states, and the device recovers in 80µs typical-enabling USB PD Fast Role Swap compliance. TRCB is active regardless of EN/FON state.
How is over-current protection configured on AOZ1356LI-05?
Over-current protection on AOZ1356LI-05 is configured using an external 1% resistor (RLIM) connected between the ILIM pin and GND. The current limit threshold follows ILIM = 14300/RLIM (A), yielding ranges from 0.45A (29.4kΩ) to 3.92A (4.02kΩ). Fault detection delay is 12ms, and FLTB asserts low upon sustained over-current, as validated in the datasheet's electrical characteristics and functional description.
What package type and dimensions does AOZ1356LI-05 use?
AOZ1356LI-05 uses a WLCP-12 (Wafer-Level Chip-Scale Package) with physical dimensions of 1.31mm × 1.81mm and 0.4mm bump pitch. The package contains 12 solder bumps arranged in a 3×4 grid, as shown in the pin configuration diagram. It is RoHS-compliant, Pb-free, and designed for high-density mobile PCB assembly with minimal thermal resistance (84°C/W).
Is AOZ1356LI-05 compatible with USB PD Fast Role Swap, and what timing parameters confirm this?
Yes, AOZ1356LI-05 is explicitly designed for USB PD Fast Role Swap (FRS), with datasheet-confirmed timing: fast turn-on time (TFON) of 50–100µs and TRCB recovery time of 80µs typical. These values meet USB PD Rev 3.0 requirements for VOUT ≥4.75V recovery within 80µs after role reversal initiation, enabled by coordinated FON/EN signaling and internal fast-recovery circuitry.
AOZ1356LI-05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 12-UFBGA, WLCSP
- Series:
- ECPower™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- Low Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 3.6V ~ 5.3V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 3.5A
- Rds On (Typ):
- 34mOhm
- Input Type:
- Non-Inverting
- Features:
- Auto Restart
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Over Voltage, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLCSP (1.81x1.31)
AOZ1356LI-05 FAQ
1.How can I place an order for AOZ1356LI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1356LI-05 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 AOZ1356LI-05 reliable?
The price and inventory of AOZ1356LI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1356LI-05 is usually 5 days.
3.What payment methods are accepted for AOZ1356LI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1356LI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1356LI-05?
AOZ1356LI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1356LI-05 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 AOZ1356LI-05?
For technical support, including AOZ1356LI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1356LI-05 requirements.
6.How does Aetrix verify that AOZ1356LI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ1356LI-05 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 AOZ1356LI-05 meets industry standards.
7.What is the process for return or replacement of AOZ1356LI-05?
All AOZ1356LI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1356LI-05, 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 AOZ1356LI-05 part is unused and in its original packaging.
Return procedure for AOZ1356LI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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