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Alpha & Omega Semiconductor Inc. AOZ1356DI-06
- Part No.:
- AOZ1356DI-06
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 12-VFDFN Exposed Pad
- Datasheet:
-
AOZ1356DI-06.pdf
- Description:
- 5V/3A ECPOWER PROTECTION SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:2,126
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Product details
Overview
AOZ1356DI-06 from Alpha and Omega Semiconductor is a latch-off mode 5V/3.5A ECPower™ protection switch with True Reverse-Current Blocking (TRCB), USB PD Fast Role Swap support, and integrated over-voltage (5.75–5.9V), over-current (programmable via RLIM), thermal shutdown (140°C), and short-circuit protection. It operates from 3.6V to 5.3V input, delivers up to 3.5A continuous load current, and features 39mΩ typical RON, enabling use in USB PD power source switching for portable computing.
For engineers reviewing the AOZ1356DI-06 datasheet, pinout, applications, or equivalent options, key selection considerations include its latch-off fault recovery behavior, 3.6–5.3V operating range, programmable current limit (e.g., 1A with 14.3kΩ RLIM), TRCB trip point (25mV), and fast turn-on time (50–100µs) under FON activation - all critical for USB PD 3.0 Fast Role Swap compliance in notebook and tablet power delivery paths.
Technical Context
The AOZ1356DI-06 implements a high-side NMOS power switch with integrated charge pump gate drive, UVLO (3.2–3.55V rising), OVP (5.75–5.9V), and TRCB circuitry that disables conduction when VOUT exceeds VVIN by 25mV and re-enables at 40mV hysteresis. Its latch-off fault response requires EN toggle or VIN recycle to clear FLTB after OCP, SCP, or TSD events.
It supports USB PD Fast Role Swap via FON pin: when asserted high before EN, it bypasses soft-start and disables OCP blanking to achieve ≤100µs VOUT rise to 4.75V. The 12-pin DFN3x3 package integrates an exposed thermal pad tied to GND, enabling 50°C/W θJA and stable operation at 85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6V to 5.3V - matches USB PD 5V fixed voltage profile with margin for line drop and ripple. |
| Continuous Output Current | 3.5A - supports high-power USB-C sink-to-source role swap without external current sensing. |
| RON (Typical) | 39mΩ - limits conduction loss to ≤0.48W at 3.5A, reducing thermal stress in compact DFN3x3 layout. |
| TRCB Trip Threshold | 25mV - prevents reverse current during VBUS arbitration or adapter hot-plug without diode forward drop penalty. |
| Fault Recovery Mode | Latch-off - requires explicit EN toggle or VIN cycle to reset FLTB after over-current, short-circuit, or thermal shutdown. |
| OVP Threshold | 5.75–5.9V - protects downstream 5V logic from USB PD voltage negotiation overshoot or adapter faults. |
| Quiescent Current | 6µA in shutdown - enables low-power system standby without compromising protection readiness. |
Pinout & Package
AOZ1356DI-06 is housed in a RoHS-compliant 3mm × 3mm DFN-12L package with exposed thermal pad (EXP) requiring solder connection to PCB ground plane for thermal management. Pin 1–3 (VOUT), Pin 10–12 (VIN), and Pin 7 (GND) are internally bonded in parallel to reduce resistance and inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | VOUT | Power output terminal rated to 28V absolute max; pins internally paralleled for low-impedance VBUS path in USB PD applications. |
| 4 | FLTB | Open-drain fault indicator; pulled low on OCP, SCP, or TSD; requires external 5V pull-up for host MCU monitoring. |
| 5 | NC | No internal connection; must be left floating or tied to GND to avoid parasitic coupling. |
| 6 | FON | Fast-On control; active-high signal enabling ≤100µs turn-on and disabling OCP blanking for USB PD FRS timing compliance. |
| 7 | GND | Power and signal reference ground; connects directly to EXP thermal pad for optimal heat dissipation. |
| 8 | ILIM | Current limit set node; connects to 1% RLIM resistor to GND to program ILIM from 0.5A to 4.0A per datasheet Table 1. |
| 9 | EN | Enable input; active-high logic control with 1.4V threshold; toggle required to clear latched faults in AOZ1356DI-06. |
| 10, 11, 12 | VIN | Supply input; pins internally paralleled to handle full 3.5A input current with minimal IR drop. |
| EXP | Exposed Pad | Thermal and electrical ground connection; must be soldered to multi-layer PCB ground plane with ≥6 vias for θJA = 50°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| USB PD Fast Role Swap Support | Enables ≤100µs VOUT recovery to >4.75V after role reversal via FON pin, meeting USB PD 3.0 spec without external timing components. |
| True Reverse-Current Blocking (TRCB) | Blocks reverse flow from VOUT to VIN at 25mV differential, eliminating need for external Schottky diode and saving board space and BOM cost. |
| Programmable Current Limit | Set via single 1% resistor (e.g., 14.3kΩ → 1.0A ILIM); supports precise over-current protection across diverse load profiles without firmware intervention. |
| Latch-Off Fault Response | Prevents automatic restart after critical faults (OCP/SCP/TSD), ensuring system-level fault handling and avoiding uncontrolled power cycling in safety-critical paths. |
| Integrated Protection Suite | Combines UVLO (3.2–3.55V), OVP (5.75–5.9V), SCP (270mV detection), and TSD (140°C) in one device, reducing discrete protection component count by ≥4. |
Applications
| USB PD Power Source Switch | Smartphones and Tablets |
|---|---|
Use Scenario: Bidirectional USB-C port implementing DRP (Dual-Role Port) with dynamic role swap between sink and source. IC Role / Device Role / Timing Role: High-side protection switch controlling VBUS path; provides TRCB during role transition and FRS-compliant turn-on within 80µs. Use Value: Eliminates external reverse-blocking diode and reduces VBUS rise time uncertainty, enabling certified USB PD 3.0 compliance with single-chip solution. |
Use Scenario: Main system power rail switching between battery and USB-C adapter input in mobile devices. IC Role / Device Role / Timing Role: Load switch managing VBUS delivery to PMIC; latched fault response prevents unsafe auto-restart during adapter overvoltage events. Use Value: Ensures robust 5V rail integrity during hot-plug and adapter swaps while maintaining <6µA shutdown current for battery longevity. |
| Notebooks and Ultrabooks | Portable Devices with USB-C Charging |
Use Scenario: USB-C port supporting simultaneous data + 5V/3A power delivery in thin-and-light laptops. IC Role / Device Role / Timing Role: ECPower™ protection switch enforcing current limit (e.g., 3.5A) and blocking reverse current during DP Alt Mode negotiation. Use Value: Delivers full 17.5W USB PD power with 39mΩ RON, minimizing voltage drop and thermal rise in constrained 3×3mm footprint. |
Use Scenario: Portable SSDs, wireless earbud chargers, or Bluetooth speakers requiring safe, standards-compliant USB-C input. IC Role / Device Role / Timing Role: Input protection IC providing OVP, SCP, and TRCB on VBUS line; FLTB pin signals host MCU of fault conditions. Use Value: Achieves IEC 62368-1 certification (UL US-33248) and ±8kV IEC61000-4-2 ESD immunity on VOUT, simplifying end-product safety validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side protection switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCK127G | 3.0–5.5V input, 3.5A, 45mΩ RON, auto-restart only, no FRS support, 6-pin WSON. | Lacks USB PD Fast Role Swap timing and TRCB; suited for basic load switching where latch-off and FRS are not required. | Select TCK127G only if USB PD 3.0 compliance is unnecessary and board space allows larger 2×2mm WSON vs. DFN3x3. |
| TPS22975 | 2.5–5.5V input, 4A, 29mΩ RON, auto-restart only, no TRCB, 12-pin WQFN, integrated 1.2V LDO. | Offers lower RON but no reverse-current blocking or FRS; requires external diode for TRCB and cannot meet USB PD FRS timing. | Choose TPS22975 when ultra-low conduction loss is prioritized over USB PD role-swap capability and reverse blocking. |
Compared with TCK127G and TPS22975, AOZ1356DI-06 uniquely combines latch-off fault recovery, True Reverse-Current Blocking, and USB PD Fast Role Swap support in a 3×3mm DFN - making it the only option among the three qualified for certified DRP implementations requiring guaranteed fault isolation and sub-100µs VBUS recovery.
Availability
AOZ1356DI-06 is available at Aetrix Electronics and suitable for USB PD power source switching, smartphone/tablet VBUS management, notebook ultrabook charging circuits, and portable device USB-C input protection requiring stable component supply and long-term lifecycle support.
Supply support for AOZ1356DI-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 high-efficiency MOSFETs, power ICs, and advanced packaging for power conversion and protection.
The AOZ1356DI product line delivers ECPower™ protection switches optimized for USB PD 3.0-compliant systems, integrating TRCB, FRS, and multi-fault protection to replace discrete protection solutions in space-constrained portable electronics.
FAQ
What is the input voltage range specification for AOZ1356DI-06?
The AOZ1356DI-06 operates from 3.6V to 5.3V on VIN, with under-voltage lockout (UVLO) activating below 3.2V (rising) and releasing at 3.45V (falling). This range is specifically tuned for USB PD 5V fixed voltage profiles and excludes the wider 3.4–5.5V range used by AOZ1356DI-01/-02 variants. The AOZ1356DI-06 datasheet specifies these values on Page 3 under Recommended Operating Ratings.
How does AOZ1356DI-06 implement True Reverse-Current Blocking (TRCB)?
The AOZ1356DI-06 detects reverse current by monitoring the VOUT–VVIN differential; it disables the power switch when this difference exceeds 25mV (typical) and re-enables at 40mV hysteresis. This TRCB function operates independently in both enabled and disabled states, eliminating the need for external reverse-blocking diodes. The AOZ1356DI-06 achieves 600ns response time and 80µs fast recovery, as confirmed in Electrical Characteristics (Page 4) and Functional Description (Page 13).
What fault recovery behavior does AOZ1356DI-06 exhibit after over-current or thermal shutdown?
AOZ1356DI-06 uses latch-off fault recovery: once triggered by over-current, short-circuit, or thermal shutdown, the device remains off until the EN pin is toggled low-then-high or the VIN supply is cycled. This differs from auto-restart versions (e.g., AOZ1356DI-01) and ensures system-level fault acknowledgment. The AOZ1356DI-06 datasheet explicitly confirms this behavior in the Ordering Information table (Page 2) and Functional Description (Page 14).
How is current limit programmed on AOZ1356DI-06, and what resistor values are supported?
Current limit on AOZ1356DI-06 is set via a 1% resistor (RLIM) between ILIM pin and GND. Supported thresholds range from 0.5A (40.2kΩ) to 4.0A (3.52kΩ), with exact values tabulated in Table 1 (Page 13). For example, a 14.3kΩ resistor sets ILIM to 1.0A. The AOZ1356DI-06 datasheet specifies ILIM accuracy as ±10% over temperature and notes foldback to 92% of setpoint during sustained overload.
Does AOZ1356DI-06 support USB PD Fast Role Swap, and what design requirements enable it?
Yes, AOZ1356DI-06 supports USB PD Fast Role Swap (FRS) when the FON pin is driven high before EN assertion. This enables ≤100µs VOUT rise to 4.75V (Figure 2, Page 6) and fast TRCB recovery in 80µs (Figure 3, Page 6), satisfying USB PD 3.0 timing requirements. The AOZ1356DI-06 datasheet confirms FRS capability in the General Description (Page 1) and Functional Description (Page 14), noting FON must be asserted ≥100µs before EN.
AOZ1356DI-06 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- 12-VFDFN Exposed Pad
- Series:
- ECPower™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 3.5A
- Rds On (Typ):
- 39mOhm
- Input Type:
- Non-Inverting
- Features:
- Latch Function, Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Over Voltage, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (3x3)
AOZ1356DI-06 FAQ
1.How can I place an order for AOZ1356DI-06 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1356DI-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 AOZ1356DI-06 reliable?
The price and inventory of AOZ1356DI-06 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1356DI-06 is usually 5 days.
3.What payment methods are accepted for AOZ1356DI-06?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1356DI-06 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1356DI-06?
AOZ1356DI-06 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1356DI-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 AOZ1356DI-06?
For technical support, including AOZ1356DI-06 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1356DI-06 requirements.
6.How does Aetrix verify that AOZ1356DI-06 is sourced from the original manufacturer or authorized distributors?
All AOZ1356DI-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 AOZ1356DI-06 meets industry standards.
7.What is the process for return or replacement of AOZ1356DI-06?
All AOZ1356DI-06 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1356DI-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 AOZ1356DI-06 part is unused and in its original packaging.
Return procedure for AOZ1356DI-06:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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