My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOZ1356DI-05
- Part No.:
- AOZ1356DI-05
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package:
- 12-VFDFN Exposed Pad
- Datasheet:
-
AOZ1356DI-05.pdf
- Description:
- 5V/3A ECPOWER PROTECTION SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,878
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOZ1356DI-05 from Alpha and Omega Semiconductor is a 5V/3.5A ECPower™ protection switch with True Reverse-Current Blocking (TRCB), programmable current limit (3.6V–5.3V input range), and USB PD Fast Role Swap support. It delivers over-voltage, over-current, thermal, and short-circuit protection in portable power delivery systems such as USB-C power source switches for notebooks and smartphones.
For engineers reviewing the AOZ1356DI-05 datasheet, pinout, applications, or equivalent options, this page provides verified specifications including auto-restart fault recovery, 39mΩ RON, 28V VOUT rating, 125µA quiescent current, and DFN3x3-12L package details - all confirmed for AOZ1356DI-05 specifically.
Technical Context
The AOZ1356DI-05 integrates a low-RON MOSFET power switch with precision current-limit control via external RLIM resistor, UVLO (3.2–3.55V rising threshold), and OVP (5.75–5.9V VIN threshold). Its TRCB circuit triggers at +25mV (VOUT–VVIN) and recovers at –40mV with 65mV hysteresis and 600ns response time.
It supports two operational modes: normal turn-on (tON = 2.7ms) and Fast-On mode (tFON = 50–100µs) activated by FON high, enabling <80µs VOUT recovery for USB PD Fast Role Swap. Fault reporting uses open-drain FLTB with 12ms OCP delay and immediate TSD assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6V to 5.3V - defines minimum adapter compatibility and ensures stable operation across USB PD 5V profiles. |
| Max Output Current | 3.5A - maximum continuous load current before foldback or shutdown, set via external RLIM resistor. |
| RON | 39mΩ typical - determines conduction loss (PLOSS = I² × 0.039Ω) and thermal rise under full load. |
| VOUT Absolute Max Rating | 28V - enables safe handling of transient surges or reverse-bias conditions on output side. |
| Quiescent Current | 125µA - enables ultra-low standby power in always-on USB-C port controllers. |
| UVLO Threshold | 3.45V typical (rising), 150mV hysteresis - prevents erratic switching during brown-out or weak-source conditions. |
| OVP Threshold | 5.9V typical (VIN), 5.5V (VOUT) - protects downstream 5V logic and capacitors from overvoltage damage. |
| TRCB Response Time | 600ns - blocks reverse current fast enough to prevent backfeed into host supplies during hot-plug events. |
Pinout & Package
AOZ1356DI-05 is housed in a 3mm × 3mm DFN-12L package with exposed thermal pad (EXP) requiring PCB ground connection via multiple vias. Pin 1–3 (VOUT), Pin 10–12 (VIN), and Pin 7 (GND) are internally paralleled for low-impedance power routing and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pins 1,2,3) | Power output terminal | Delivers regulated 5V to load; rated for 28V absolute max; internally connected for current sharing and low-inductance path. |
| FLTB (Pin 4) | Fault indicator output | Open-drain signal pulled low after 12ms OCP or immediately on TSD; requires external 5V pull-up for host MCU monitoring. |
| NC (Pin 5) | No-connect terminal | Internally unconnected; must be left floating or tied to GND - no electrical function or routing impact. |
| FON (Pin 6) | Fast-On enable input | Active-high control (1.4V threshold); asserts before EN to reduce tFON to ≤100µs for USB PD FRS compliance. |
| GND (Pin 7) | Ground reference | Primary return path for control logic and power switch; connects directly to EXP thermal pad for thermal management. |
| ILIM (Pin 8) | Current limit set node | Analog input sensing voltage across RLIM; sets ILIM from 0.5A to 4.0A using 1% resistor per Table 1. |
| EN (Pin 9) | Enable control input | Active-high logic interface (1.4V threshold); internal pull-down ensures default-off state; toggling restarts auto-restart faults. |
| VIN (Pins 10,11,12) | Supply input terminal | Accepts 3.6–5.3V input; powers internal regulator and gate driver; internally paralleled for low-impedance supply path. |
| EXP | Exposed thermal pad | Must be soldered to multi-layer PCB ground plane with ≥6 vias; primary heat dissipation path for 3.5A operation. |
Key Features
| Feature | Design Value |
|---|---|
| USB PD Fast Role Swap (FRS) support | Enables role reversal from sink to source with VOUT recovery to >4.75V in ≤80µs when FON = 5V. |
| True Reverse-Current Blocking (TRCB) | Prevents backfeed from VOUT to VVIN in both enabled and disabled states, with 25mV trip and 40mV release thresholds. |
| Programmable current limit | Set from 0.5A to 4.0A using single 1% resistor (RLIM); foldback reduces current by 8% during sustained overload. |
| Auto-restart fault recovery | Resumes operation 24ms after OVP or thermal fault removal; immediate recovery post-TRCB event. |
| Low-quiescent-power shutdown | Draws only 6µA when EN = 0V and FON = 0V - critical for battery-backed USB-C port controllers. |
| Robust system-level protection | Integrates OVP (5.9V), UVLO (3.45V), SCP (270mV detection), TSD (140°C), and ±4kV HBM ESD on all pins. |
Applications
| USB PD Power Source Switch | Smartphone/Tablet Charging Port |
|---|---|
Use Scenario: Enables bidirectional power negotiation in USB-C ports where device must rapidly switch from power consumer to provider during cable reorientation or dock attachment. IC Role / Device Role / Timing Role: Primary 5V power path switch with FRS-compliant fast turn-on and TRCB to isolate legacy 5V rails during role swap. Use Value: Meets USB PD Rev 3.0 FRS timing (<80µs VOUT recovery) while preventing reverse current that could disrupt host power sequencing. |
Use Scenario: Protects internal battery charging circuitry and USB controller ICs from overvoltage, overcurrent, and reverse feed during fast-charging adapter hot-plug events. IC Role / Device Role / Timing Role: Input-side protection switch placed between USB-C receptacle and PMIC; monitors VIN, limits IOUT, and reports faults via FLTB. Use Value: 28V VOUT rating withstands accidental 12V adapter misconnection; 39mΩ RON minimizes voltage drop across 3.5A charging paths. |
| Notebook/Ultrabook Power Delivery | Portable Device Load Switch |
Use Scenario: Manages 5V bus integrity in thin-and-light notebooks supporting USB-C DisplayPort Alt Mode and power delivery simultaneously. IC Role / Device Role / Timing Role: High-reliability load switch isolating VBUS from system logic during DP alt-mode signaling or thermal throttling events. Use Value: Auto-restart behavior ensures uninterrupted power after transient overloads (e.g., GPU burst loads), while 125µA IQ extends suspend battery life. |
Use Scenario: Controls power to peripheral modules (e.g., Bluetooth/Wi-Fi radios, sensors) in battery-powered IoT devices requiring precise current limiting and fault visibility. IC Role / Device Role / Timing Role: Programmable current-limited enable switch with FLTB-driven MCU interrupt for real-time load health monitoring. Use Value: External RLIM resistor allows dynamic current scaling (0.5–4.0A) without firmware change; ±4kV HBM rating ensures robustness in handheld ESD environments. |
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 PD3.1 up to 28V; requires external MCU for policy engine. | Targeted at full-featured PD sink/source ports with variable voltage negotiation; not a standalone switch. | Select if USB PD 3.1 programmable power supply (PPS) and dual-role port (DRP) functionality are required beyond basic 5V switching. |
| RT9759GQW | 5V/3A switch with 45mΩ RON, 3.3–5.5V input, no TRCB, latch-off only, no FRS support. | Lacks Fast Role Swap timing and true reverse-current blocking; suitable for fixed-role, non-USB-C applications. | Select for cost-sensitive, single-role 5V power distribution where FRS and TRCB are unnecessary. |
Compared with TPS25750RWER and RT9759GQW, AOZ1356DI-05 delivers optimized 5V-only FRS performance with minimal BOM count (no MCU or PD controller needed), lower RON, and guaranteed TRCB - making it ideal for compact, high-efficiency USB-C source switches where timing and reverse isolation are critical.
Availability
AOZ1356DI-05 is available at Aetrix Electronics and suitable for USB PD power source switches, smartphone/tablet charging ports, notebook power delivery subsystems, and portable device load management requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for AOZ1356DI-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 and Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, power ICs, and protection solutions for computing, consumer, and industrial markets.
The AOZ1356DI product line delivers ECPower™-branded protection switches designed specifically for USB-C power delivery architectures requiring fast role swap, reverse-current blocking, and comprehensive fault coverage in space-constrained portable devices.
FAQ
What is the input voltage range specified for AOZ1356DI-05?
The AOZ1356DI-05 has a confirmed input operating voltage range of 3.6V to 5.3V, as documented in the Rev. 2.3 datasheet's Ordering Information table and Electrical Characteristics section. This range is distinct from AOZ1356DI-01/-02 (3.4V–5.5V) and ensures compatibility with tightly regulated 5V USB PD sources while maintaining UVLO margin.
Does AOZ1356DI-05 support USB PD Fast Role Swap, and how is it implemented?
Yes, AOZ1356DI-05 supports USB PD Fast Role Swap (FRS) through its dedicated FON pin. When FON is driven high before EN activation, the device achieves ≤100µs fast turn-on time (tFON) and ≤80µs VOUT recovery to >4.75V - meeting USB PD Rev 3.0 FRS timing requirements. This capability is explicitly validated for AOZ1356DI-05 in the Functional Description and Timing Diagrams sections.
What fault recovery behavior does AOZ1356DI-05 exhibit?
AOZ1356DI-05 implements auto-restart fault recovery. After over-voltage or thermal shutdown faults are removed, it automatically attempts restart after 24ms. For True Reverse-Current Blocking events, recovery is immediate upon condition removal. This behavior is confirmed in the datasheet's Ordering Information table and Functional Description section, distinguishing it from latch-off variants like AOZ1356DI-06.
How is current limit programmed on AOZ1356DI-05?
Current limit on AOZ1356DI-05 is set via an external 1% resistor (RLIM) connected between ILIM pin and GND. The datasheet provides Table 1 correlating RLIM values (e.g., 14.3kΩ for 1.0A, 4.02kΩ for 3.5A) and confirms programmability across 0.5A–4.0A. The ILIM pin senses voltage across RLIM to determine the threshold, with 8% foldback applied during sustained overload.
What package type and thermal considerations apply to AOZ1356DI-05?
AOZ1356DI-05 uses the DFN3x3-12L package with an exposed thermal pad (EXP). Per datasheet Layout Guidelines, EXP must be soldered to a multi-layer PCB ground plane using ≥6 thermal vias, and top/bottom copper planes should be maximized to achieve θJA = 50°C/W. This thermal design is essential to sustain 3.5A continuous current without exceeding 140°C junction temperature.
AOZ1356DI-05 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:
- Auto Restart, 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-05 FAQ
1.How can I place an order for AOZ1356DI-05 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ1356DI-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 AOZ1356DI-05 reliable?
The price and inventory of AOZ1356DI-05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ1356DI-05 is usually 5 days.
3.What payment methods are accepted for AOZ1356DI-05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ1356DI-05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ1356DI-05?
AOZ1356DI-05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ1356DI-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 AOZ1356DI-05?
For technical support, including AOZ1356DI-05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ1356DI-05 requirements.
6.How does Aetrix verify that AOZ1356DI-05 is sourced from the original manufacturer or authorized distributors?
All AOZ1356DI-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 AOZ1356DI-05 meets industry standards.
7.What is the process for return or replacement of AOZ1356DI-05?
All AOZ1356DI-05 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ1356DI-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 AOZ1356DI-05 part is unused and in its original packaging.
Return procedure for AOZ1356DI-05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ1356DI-05 Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
