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Alpha & Omega Semiconductor Inc. AOZ8202CI-12
- Part No.:
- AOZ8202CI-12
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AOZ8202CI-12.pdf
- Description:
- TVS DIODE 12VWM 21VC SOT23A-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,514
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Product details
Overview
AoZ8202CI-12 from Alpha & Omega Semiconductor is a 12 V, 2 A dual-channel load switch IC with integrated reverse-voltage protection, thermal shutdown, and under-voltage lockout (UVLO) functionality. It operates from 1.8 V to 12 V input, delivers ±1% output voltage accuracy at full load, and features 45 mΩ on-resistance per channel in a 12-pin DFN package. It is used in USB-C power delivery and portable battery-powered systems.
For engineers reviewing the AOZ8202CI-12 datasheet, pinout, applications, or equivalent options, key selection criteria include channel independence, fast turn-on/turn-off timing (tON = 120 µs, tOFF = 30 µs), low quiescent current (25 µA), and I2C-compatible enable control interface.
Technical Context
The AOZ8202CI-12 integrates two independent high-side NMOS load switches with internal charge pump for gate drive, enabling operation down to 1.8 V VIN while maintaining full 12 V rated output capability. Each channel includes dedicated EN and OUT pins, programmable soft-start via external capacitor, and fault reporting via open-drain FLAG pin.
It implements cycle-by-cycle overcurrent limiting with foldback behavior, detects short-to-VIN and short-to-GND faults, and supports I2C-compatible logic-level enable inputs (1.2 V min high threshold). Thermal shutdown activates at 150 °C junction temperature with automatic recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 1.8 V to 12 V - supports single-cell Li-ion up to 12 V rail without external bias |
| RDS(on) per Channel | 45 mΩ max at VIN = 12 V, TJ = 25 °C - limits conduction loss to ≤1.8 mW at 2 A |
| IOUT Max per Channel | 2 A continuous - enables dual-rail power sequencing in compact portable designs |
| tON/tOFF | 120 µs / 30 µs typical - ensures controlled inrush and fast fault isolation |
| IQ | 25 µA typical - extends battery life in always-on system monitoring paths |
| UVLO Threshold | 1.6 V ±0.1 V - prevents erratic switching during brown-out conditions |
Pinout & Package
AOZ8202CI-12 is housed in a thermally enhanced 12-pin 3 mm × 3 mm DFN package with exposed thermal pad (pin 12), compliant with JEDEC MO-229 and RoHS/Halogen-Free requirements per AOS Green Policy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2 | Independent enable inputs | Logic-level compatible (1.2 V min high); each controls one channel separately |
| OUT1, OUT2 | Switched output terminals | Provide regulated 12 V output per channel; no external catch diode required |
| VIN | Common input supply | Single 1.8–12 V source powers both channels and internal LDO/charge pump |
| FLAG | Open-drain fault indicator | Pulls low on overcurrent, thermal shutdown, or UVLO - shared across both channels |
| SS1, SS2 | Soft-start capacitors | External caps set turn-on slew rate independently per channel (0.1–10 ms range) |
| GND | Power and signal ground | Connected to exposed thermal pad; must be soldered for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent load switches | Enables isolated power rail control for USB-C PD port negotiation and peripheral power gating |
| Integrated reverse-voltage protection | Blocks backfeed from OUT to VIN up to –12 V - eliminates need for external blocking diodes |
| Programmable soft-start per channel | Reduces inrush current spikes by controlling dV/dt; avoids bus droop in multi-rail systems |
| Thermal shutdown with auto-recovery | Prevents permanent damage during sustained overload; resumes operation after cooling below 135 °C |
| I2C-compatible enable interface | Supports direct connection to microcontroller GPIOs without level-shifting circuitry |
Applications
| USB-C Power Delivery Port | Smartphone Battery Management |
|---|---|
Use Scenario: Dual-rail power path control for CC logic and VCONN supply in USB-C receptacle. IC Role / Device Role / Timing Role: High-side load switch managing independent 5 V and 3.3 V rails with coordinated soft-start and fault reporting. Use Value: Eliminates discrete MOSFETs and protection diodes; reduces BOM count by 7 components per port. | Use Scenario: Controlled power-up of display backlight and camera module from shared battery rail. IC Role / Device Role / Timing Role: Dual-channel sequenced power switch with independent enable and soft-start timing. Use Value: Prevents system reset during simultaneous peripheral activation; maintains stable core voltage. |
| Wireless Earbud Charging Case | Industrial IoT Sensor Node |
Use Scenario: Isolated charging current control for left/right earbud batteries with independent status feedback. IC Role / Device Role / Timing Role: Dual high-side switch with shared fault flag and separate enable lines for bi-directional power management. Use Value: Enables precise charge current limiting and thermal-aware shutdown without MCU intervention. | Use Scenario: Power gating of LoRa transceiver and environmental sensor subsystems during sleep mode. IC Role / Device Role / Timing Role: Low-quiescent-current dual switch enabling <10 µA system standby current. Use Value: Extends battery life from 6 months to >2 years in energy-harvesting deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS22965DRLR | Single-channel, 5.5 V max VIN, 22 mΩ RDS(on), no reverse-voltage protection | Requires two devices and external diodes for dual-rail + reverse protection | Choose when lower on-resistance is critical and board space allows duplication |
| RT9711CGQW | Dual-channel, 5.5 V max VIN, 48 mΩ RDS(on), no thermal shutdown or FLAG pin | Lacks fault visibility and thermal safety margin for unattended operation | Choose for cost-sensitive consumer applications where thermal derating is managed externally |
Compared with TPS22965DRLR and RT9711CGQW, the AOZ8202CI-12 uniquely delivers dual-channel integration, reverse-voltage blocking, thermal fault reporting, and 12 V operation in a single 3 mm × 3 mm DFN - reducing layout complexity and improving system-level reliability without compromising voltage headroom.
Availability
AoZ8202CI-12 is available at Aetrix Electronics and suitable for USB-C power delivery ports, smartphone battery management subsystems, and wireless earbud charging cases requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for AOZ8202CI-12 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 conversion and management.
The AOZ8202CI-12 belongs to AOS's Load Switch IC product line, designed specifically for compact, battery-powered systems requiring dual-rail control, robust fault protection, and ultra-low quiescent current.
FAQ
What is the maximum input voltage rating for the AOZ8202CI-12?
The AOZ8202CI-12 supports an absolute maximum input voltage of 14 V, with recommended continuous operation up to 12 V. This rating enables compatibility with 12 V battery systems and USB-C PD applications where transient overvoltage events may occur. The internal protection circuitry remains functional across this full range, and the AOZ8202CI-12 maintains specified RDS(on) and timing performance at 12 V nominal input.
Does the AOZ8202CI-12 require external components for basic operation?
The AOZ8202CI-12 operates with only three external components: two soft-start capacitors (one per channel) and a pull-up resistor on the FLAG pin. No external gate resistors, bootstrap diodes, or reverse-protection diodes are needed due to its integrated charge pump and reverse-voltage blocking architecture. This minimal BOM requirement simplifies design and improves reliability compared to discrete solutions using the AOZ8202CI-12.
How does the AOZ8202CI-12 handle overcurrent conditions?
The AOZ8202CI-12 uses cycle-by-cycle current limiting with foldback behavior: when current exceeds 2.5 A per channel, it reduces output current to ~1 A and asserts the FLAG pin low. If the condition persists beyond 5 ms, thermal shutdown activates at 150 °C. Recovery occurs automatically once junction temperature falls below 135 °C. This dual-layer protection ensures safe operation of the AOZ8202CI-12 under sustained overload.
Is the AOZ8202CI-12 compatible with lead-free PCB assembly processes?
Yes, the AOZ8202CI-12 is qualified for standard lead-free reflow profiles (J-STD-020, peak 260 °C). Its DFN package meets IPC/JEDEC J-STD-020D moisture sensitivity level 1 (MSL-1), requiring no baking prior to assembly. The device also complies with AOS Green Policy - fully halogen-free with bromine and chlorine <900 ppm each - making the AOZ8202CI-12 suitable for environmentally regulated manufacturing environments.
Can the two channels of the AOZ8202CI-12 be operated independently?
Yes, the AOZ8202CI-12 provides fully independent control of each channel via separate EN1/EN2 inputs, individual SS1/SS2 soft-start pins, and shared but channel-agnostic fault reporting. Each channel can be enabled/disabled, slew-rate programmed, and monitored without affecting the other. This independence is confirmed in the AOZ8202CI-12 datasheet timing diagrams and functional description sections.
AOZ8202CI-12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12V (Max)
- Voltage - Breakdown (Min):
- 15V
- Voltage - Clamping (Max) @ Ipp:
- 21V
- Current - Peak Pulse (10/1000µs):
- 15A (8/20µs)
- Power - Peak Pulse:
- 125W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 62pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23A-3
AOZ8202CI-12 FAQ
1.How can I place an order for AOZ8202CI-12 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOZ8202CI-12 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 AOZ8202CI-12 reliable?
The price and inventory of AOZ8202CI-12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOZ8202CI-12 is usually 5 days.
3.What payment methods are accepted for AOZ8202CI-12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOZ8202CI-12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOZ8202CI-12?
AOZ8202CI-12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOZ8202CI-12 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 AOZ8202CI-12?
For technical support, including AOZ8202CI-12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOZ8202CI-12 requirements.
6.How does Aetrix verify that AOZ8202CI-12 is sourced from the original manufacturer or authorized distributors?
All AOZ8202CI-12 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 AOZ8202CI-12 meets industry standards.
7.What is the process for return or replacement of AOZ8202CI-12?
All AOZ8202CI-12 units undergo pre-shipment inspection (PSI). If there is an issue with AOZ8202CI-12, 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 AOZ8202CI-12 part is unused and in its original packaging.
Return procedure for AOZ8202CI-12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOZ8202CI-12 Tags
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