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Alpha & Omega Semiconductor Inc. AOZ1356LI-06
- Part No.:
- AOZ1356LI-06
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 12-UFBGA, WLCSP
- Datasheet:
-
AOZ1356LI-06.pdf
- Description:
- 5V/3A EC POWER SMART PROTECTION
- Quantity:
- Payment:
- Shipping:
Inventory:2,229
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Product details
Overview
AOZ1356LI-06 from Alpha and Omega Semiconductor is a latch-off, 5V/3A ECPower™ protection switch with True Reverse-Current Blocking (TRCB), programmable current limit (set via external resistor), 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 delivers fast recovery (80µs) from reverse-current events in smartphones and USB PD power source applications.
For engineers reviewing the AOZ1356LI-06 datasheet, pinout, applications, or equivalent options, this device is selected for USB-C power path control requiring latch-off fault behavior, precise current limiting, TRCB integrity, and sub-100µs FRS-compliant voltage recovery - critical for portable device power architecture validation.
Technical Context
The AOZ1356LI-06 implements a latch-off fault response: once triggered by over-current, thermal shutdown, or over-voltage, it remains off until EN is toggled or VIN is cycled. Its TRCB circuit activates at 25mV (VOUT–VVIN) and releases at 40mV (VVIN–VVOUT), enabling bidirectional blocking during both enabled and disabled states.
Fast Role Swap compliance is achieved through two synchronized mechanisms: FON-driven fast turn-on (50–100µs to 4.75V) and TRCB fast recovery (80µs typ.), ensuring VOUT reestablishes >4.75V within USB PD Rev 3.0 timing limits after role reversal. UVLO (3.45V typ.) and OVP (5.9V typ.) thresholds are calibrated specifically for the 3.6–5.3V operating range of the -05/-06 variants.
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 ripple. |
| Max Output Current | 3.5A - supports high-power USB PD sink-to-source transitions without derating. |
| RON (Typical) | 34mΩ - minimizes conduction loss (≤0.4W at 3.5A), reducing thermal stress in compact WLCSP layout. |
| TRCB Response Time | 600ns - prevents reverse leakage during transient bus voltage inversions in dual-role systems. |
| Fault Recovery Mode | Latch-off - requires explicit EN toggle or VIN recycle, eliminating auto-restart instability in safety-critical power paths. |
| OVP Threshold | 5.9V (typ) - protects downstream 5V logic from overvoltage while allowing full USB PD 5V tolerance. |
| Quiescent Current | 125µA (active), 6µA (shutdown) - enables low-power standby in battery-powered host controllers. |
Pinout & Package
AOZ1356LI-06 uses a 1.31mm × 1.81mm WLCP-12 package with 0.4mm pitch and 12 solder bumps. The package supports ultra-compact placement on thin-profile mobile PCBs and provides thermal resistance of 84°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1A, 1B, 1C) | Supply input | Internally tied - accepts 3.6–5.3V input; connects to internal regulator and switch FET source. |
| GND (Pins 2A, 2B, 2C) | Power ground | Common return for switch, logic, and protection circuits; must be low-inductance plane connection. |
| VOUT (Pins 3A, 3B) | Power output | Internally tied - rated to 28V absolute max; delivers switched 5V to USB-C port or load. |
| EN (Pin 3D) | Enable control | Active-high logic input (1.4V threshold); toggling resets latch-off faults - primary system-level reset interface. |
| FON (Pin 3C) | Fast-On control | Active-high signal (1.4V threshold); enables sub-100µs turn-on and disables OCP during FRS sequence. |
| ILIM (Pin 2D) | Current limit set | Analog input - connects to 1% RLIM resistor to GND; sets ILIM = 14300/RLIM (A). |
| FLTB (Pin 1D) | Fault indicator | Open-drain output - pulled low (≤0.3V @ 3mA) during OCP, OTP, or OVP; high-Z when clear. |
Key Features
| Feature | Design Value |
|---|---|
| USB PD Fast Role Swap Support | Enables <80µs VOUT recovery to >4.75V after role swap, meeting USB PD Rev 3.0 timing requirements. |
| True Reverse-Current Blocking (TRCB) | Blocks reverse flow from VOUT to VIN in both ON and OFF states, with 25mV trip and 40mV release thresholds. |
| Programmable Current Limit | Set via single external 1% resistor (e.g., 14.3kΩ → 1A limit); avoids fixed-threshold inflexibility in multi-load designs. |
| Latch-Off Fault Response | Prevents uncontrolled auto-restart during persistent faults - essential for deterministic system-level fault handling. |
| Low Quiescent Power | 125µA active supply current and 6µA shutdown current minimize battery drain in always-on USB-C controller ICs. |
Applications
| USB PD Power Source Switch | Smartphone Power Path Control |
|---|---|
Use Scenario: Managing 5V power delivery from smartphone battery to USB-C port during DRP role swap. IC Role / Device Role / Timing Role: Primary power path switch with TRCB and FRS-compliant recovery. Use Value: Ensures VOUT recovers to ≥4.75V within 80µs after role reversal, satisfying USB PD spec and preventing host enumeration failure. |
Use Scenario: Isolating battery from USB-C port during charging/discharging transitions in dual-role devices. IC Role / Device Role / Timing Role: Bidirectional protection switch enforcing strict reverse-current blocking and latch-off fault containment. Use Value: Prevents battery discharge into port during dead-battery attach and eliminates unsafe auto-restart during thermal overload. |
| Notebook USB-C Port Protection | Portable Monitor Power Management |
Use Scenario: Securing 5V VBUS path in ultrabook docking solutions with hot-plug USB-C peripherals. IC Role / Device Role / Timing Role: High-reliability current-limited switch with 28V VOUT rating and ±4kV HBM ESD robustness. Use Value: Withstands repeated hot-plug transients and maintains stable 5V rail despite capacitive loading from multiple downstream ports. |
Use Scenario: Enabling/disabling 5V power to display panel and USB-C data lines in battery-powered monitors. IC Role / Device Role / Timing Role: Low-RON (34mΩ), low-IQ (125µA) switch supporting rapid enable/disable cycles. Use Value: Reduces conduction loss under 3A load and extends battery runtime during intermittent display usage. |
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 + switch; supports PD3.1 up to 28V; no external ILIM resistor needed. | Requires full PD policy engine implementation; higher BOM cost and firmware dependency. | Select when full PD 3.1 negotiation and variable voltage support are required - not a drop-in replacement. |
| RT9759GQW | Auto-restart fault mode; 3.0–5.5V input; 25mΩ RON; lacks FRS timing certification and TRCB hysteresis spec. | Suitable for non-FRS USB-C sources where latch-off is not mandated and reverse-current blocking is less stringent. | Choose for cost-sensitive, non-role-swap applications where fast recovery and deterministic fault hold are not critical. |
Compared with AOZ1356LI-06, TPS25750RWER adds full PD protocol intelligence but increases design complexity, while RT9759GQW offers lower RON and wider input range but omits FRS timing guarantees and latch-off behavior - making AOZ1356LI-06 uniquely suited for deterministic, FRS-compliant 5V power path control.
Availability
AOZ1356LI-06 is available at Aetrix Electronics and suitable for USB PD power source switches, smartphone power path control, and notebook USB-C port protection requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant WLCSP packaging.
Supply support for AOZ1356LI-06 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 and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in MOSFETs, power ICs, and advanced packaging for high-efficiency power conversion.
The AOZ1356LI family is designed for USB-C power delivery systems requiring robust, compact, and standards-compliant protection switching - with variant-specific UVLO/OVP tuning and latch-off behavior for deterministic fault handling.
FAQ
What is the key functional difference between AOZ1356LI-06 and AOZ1356LI-01?
The AOZ1356LI-06 implements latch-off fault response: once tripped by over-current, thermal shutdown, or over-voltage, it remains disabled until EN is toggled or VIN is recycled. In contrast, AOZ1356LI-01 uses auto-restart, attempting recovery every 24ms after fault removal. This makes AOZ1356LI-06 suitable for applications demanding deterministic fault containment, such as portable device power architecture where uncontrolled restart could compromise system stability.
How is current limit set on AOZ1356LI-06, and what resistor value yields a 2A threshold?
Current limit on AOZ1356LI-06 is set using an external 1% resistor (RLIM) from ILIM to GND, per the equation ILIM = 14300/RLIM (A). For a 2A threshold, RLIM = 14300/2 = 7.15kΩ - a standard 7.15kΩ 1% resistor achieves this precisely. The datasheet confirms this relationship is valid across temperature and input voltage for AOZ1356LI-06's 3.6–5.3V operating range.
Does AOZ1356LI-06 support USB PD Fast Role Swap out of the box, or does it require external timing control?
AOZ1356LI-06 supports USB PD Fast Role Swap natively through its integrated FON pin and TRCB fast recovery circuitry. When FON is asserted before EN, the device achieves ≤100µs fast turn-on and 80µs TRCB recovery - both verified in the datasheet's Figure 7 and Figure 11. No external timing IC or firmware sequencing is required; only proper FON/EN signal phasing per the datasheet's TS_FON (100µs setup) and TH_FON (40µs hold) specs is needed.
What is the maximum allowable output capacitance for AOZ1356LI-06, and how is it calculated?
The maximum output capacitance for AOZ1356LI-06 is determined by COUT = ILIM × (TON/VIN), where TON = 2ms (typical turn-on time), VIN = 5V, and ILIM depends on RLIM. For example, with RLIM = 14.3kΩ (1A limit), COUT ≤ 1A × (0.002s / 5V) = 400µF. This ensures full charging during soft-start without violating current-limit duration or causing excessive inrush beyond the programmed threshold.
Is the FLTB pin on AOZ1356LI-06 actively driven or open-drain, and what pull-up voltage is recommended?
The FLTB pin on AOZ1356LI-06 is an open-drain output that pulls low (≤0.3V at 3mA sink) during over-current, over-temperature, or over-voltage faults, and goes high-impedance when faults clear. A pull-up resistor (RFLTB) to 5V is explicitly required per the datasheet (Page 13) to generate a valid logic-high signal for host microcontroller monitoring - no internal pull-up exists, and operation at voltages other than 5V is not specified or guaranteed.
AOZ1356LI-06 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:
- Latch Function
- 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-06 FAQ
1.How can I place an order for AOZ1356LI-06 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1356LI-06 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-06 reliable?
The price and inventory of AOZ1356LI-06 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1356LI-06 is usually 5 days.
3.What payment methods are accepted for AOZ1356LI-06?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1356LI-06 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1356LI-06?
AOZ1356LI-06 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1356LI-06 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-06?
For technical support, including AOZ1356LI-06 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1356LI-06 requirements.
6.How does Aetrix verify that AOZ1356LI-06 is sourced from the original manufacturer or authorized distributors?
All AOZ1356LI-06 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-06 meets industry standards.
7.What is the process for return or replacement of AOZ1356LI-06?
All AOZ1356LI-06 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1356LI-06, 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-06 part is unused and in its original packaging.
Return procedure for AOZ1356LI-06:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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