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Diodes Incorporated PI3USB9281CGEEX
- Part No.:
- PI3USB9281CGEEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Power Management - Specialized
- Package:
- 15-XFBGA, WLCSP
- Datasheet:
-
PI3USB9281CGEEX.pdf
- Description:
- IC USB 2.0 PORT DETECT 15CSP
- Quantity:
- Payment:
- Shipping:
Inventory:8,772
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Product details
Overview
PI3USB9281CGEEX from Diodes Incorporated is a USB 2.0 port protection IC with integrated charger detection, supporting BC1.2 (DCP/CDP/SDP), Apple 1A/2A/2.4A, Samsung Fast, YD/T-1951, and CEA-936 car-kit chargers. It integrates a 1.7A current-limited power switch with over-voltage protection (OVP) up to 28V on VBUSIN and operates from 3V to 5.5V supply across –40°C to +85°C, used in smartphone and tablet USB charging circuits.
For engineers reviewing the PI3USB9281CGEEX datasheet, PI3USB9281CGEEX pinout, PI3USB9281CGEEX application, or PI3USB9281CGEEX equivalent, key selection criteria include USB charger detection accuracy, VBUSIN 28V tolerance, I²C programmability for configuration, OCP trip threshold, and CSP-15 package thermal performance in space-constrained portable designs.
Technical Context
The PI3USB9281CGEEX implements dual-function circuitry: a high-side power switch with precise 1.7A over-current protection and a multi-standard USB charger detector using internal ADC-based ID pin analysis and D+/D− voltage profiling. It supports I²C slave interface (address 0x48) for real-time status readback and configuration of detection modes.
Its architecture includes dedicated analog comparators for VBUSDET, float detection, and MHL/OTG accessory identification, enabling concurrent detection of non-charging accessories while maintaining USB 2.0 data path integrity via low-capacitance D+/D− switches (<1.5pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charger Detection Standards | BC1.2 DCP/CDP/SDP, Apple 1A/2A/2.4A, Samsung Fast, YD/T-1951, CEA-936 Car-kit #1 & #2 - enables universal wall/PC/car charging compatibility |
| VBUSIN Max Rating | 28V - protects against USB Power Delivery transient surges and automotive load-dump conditions |
| OCP Threshold | 1.7A ±15% - limits inrush and fault current to safeguard downstream battery charging ICs |
| Supply Voltage Range | 3.0V to 5.5V - supports direct connection to USB VBUS or regulated 3.3V/5V rails without LDO |
| Operating Temperature | –40°C to +85°C - validated for mobile device internal environments including battery proximity |
| I²C Address | 0x48 (7-bit) - allows multi-device bus configuration with fixed address for simplified system integration |
Pinout & Package
PI3USB9281CGEEX is housed in a 15-ball, 1.5mm × 2.0mm, 0.4mm pitch wafer-level chip-scale package (CSP-15, GE variant). The package features bottom-side solder balls with exposed thermal pad for enhanced PCB heat dissipation in thin-profile handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBUSIN | Input power rail | Accepts up to 28V; feeds internal OVP comparator and power switch FET source |
| VBUSOUT | Switched output rail | Delivers protected 1.7A max current to USB connector VBUS after OCP/OVP validation |
| D+, D− | USB 2.0 differential data path | Low-capacitance (1.3pF typ.) analog switches preserve signal integrity up to 480Mbps |
| ID | Accessory identification input | Analog input for BC1.2/CEA-936 detection; internally biased and sampled by ADC |
| INTB | Open-drain interrupt output | Active-low signal asserts on charger detection, OCP event, or OVP fault for host processor wake-up |
| ENB | Enable control input | Active-low logic input enabling/disabling power switch and detection circuitry |
| SDA, SCL | I²C interface | Supports standard-mode (100kHz) and fast-mode (400kHz) communication for configuration/status |
| GND, VDDIO | Ground & I/O supply | VDDIO powers I²C and logic; separate GND minimizes noise coupling into analog detection paths |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.7A power switch with OCP | Eliminates need for external MOSFET and current-sense resistor, reducing BOM count and PCB area |
| 28V-tolerant VBUSIN pin | Withstands USB PD 20V transients and automotive 24V system surges without external clamping |
| Multi-standard charger detection engine | Hardware-accelerated detection of 9+ charger types without host CPU intervention or firmware updates |
| I²C-configurable detection modes | Allows runtime enable/disable of specific charger profiles (e.g., disable Apple-only mode in enterprise tablets) |
| Low 1.3pF D+/D− switch capacitance | Maintains USB 2.0 eye diagram margin and reduces EMI in high-density layout environments |
Applications
| Smartphone Charging Interface | Tablet USB Port Protection |
|---|---|
Use Scenario: Smartphone motherboard with single USB micro-B port handling both data sync and Li-ion battery charging from diverse wall adapters and PCs. IC Role / Device Role / Timing Role: Charger detection IC and high-side power switch; provides real-time charger classification and current-limited VBUS delivery. Use Value: Enables accurate battery charge algorithm selection (e.g., 500mA vs. 2.4A) and prevents overcurrent damage during hot-plug events. | Use Scenario: 10-inch Android tablet requiring robust USB port protection against 24V automotive chargers and faulty third-party adapters. IC Role / Device Role / Timing Role: VBUS supervisor and BC1.2-compliant charger identifier; monitors VBUSIN continuously and asserts INTB on OVP/OCP faults. Use Value: Guarantees safe 1.7A charging under CEA-936 car-kit conditions while preserving USB 2.0 data throughput for peripheral attachment. |
| Digital Camera USB Interface | Portable Media Player Hub |
Use Scenario: High-resolution digital camera with USB 2.0 OTG capability for direct photo transfer to USB flash drives and simultaneous battery charging. IC Role / Device Role / Timing Role: Dual-role detection IC - identifies OTG host mode (ID grounded) and charger type (ID floating/voltage-divided) concurrently. Use Value: Eliminates mechanical USB mode switches; enables automatic transition between charging and peripheral-host modes based on cable insertion. | Use Scenario: Portable media player with micro-USB port supporting MHL video output to HDMI displays and BC1.2 charging from travel adapters. IC Role / Device Role / Timing Role: Multi-accessory detector - distinguishes MHL sink (D+/D− shorted), OTG (ID = GND), and DCP (D+/D− shorted + VBUS > 4.0V). Use Value: Delivers plug-and-play MHL video mirroring without user configuration while ensuring correct charge current for Li-ion cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charger detection and port protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB211IRWBR | Single-channel USB 2.0 redriver (no charger detection or power switch); requires external OVP/OCP circuitry | Lacks integrated BC1.2/MHL/OTG detection; suitable only for signal integrity enhancement, not full port protection | Select when signal equalization is primary need and charger detection is handled elsewhere |
| TPS65987D | USB-C PD controller with integrated buck-boost converter; supports USB PD 3.0 but no BC1.2 legacy detection | Designed for USB-C ecosystems only; incompatible with micro-USB or legacy Type-A ports | Choose for new USB-C designs requiring programmable PD policy engine, not micro-USB BC1.2 support |
Compared with TUSB211IRWBR and TPS65987D, the PI3USB9281CGEEX uniquely combines BC1.2/CEA-936/MHL/OTG detection, 1.7A OCP, and 28V VBUSIN tolerance in a micro-CSP footprint-making it optimal for cost-sensitive, space-constrained micro-USB designs requiring full legacy charger compatibility.
Availability
PI3USB9281CGEEX is available at Aetrix Electronics and suitable for smartphone charging interfaces, tablet USB port protection, digital camera USB interfaces, and portable media player hubs requiring stable component supply and long-term lifecycle support.
Supply support for PI3USB9281CGEEX 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The PI3USB9281C belongs to Diodes' USB interface protection product line, engineered specifically for portable consumer electronics requiring robust, standards-compliant USB port supervision and intelligent charger identification.
FAQ
What charger standards does the PI3USB9281CGEEX support?
The PI3USB9281CGEEX supports Battery Charging Specification 1.2 (BC1.2) for DCP, CDP, and SDP modes; Apple 1A, 2A, and 2.4A dedicated chargers; Samsung Fast chargers; YD/T-1951 compliant chargers; and CEA-936 Car-kit #1 and #2. It also detects MHL accessories, OTG hosts, and non-charging USB peripherals via ID pin and D+/D− voltage analysis.
Does the PI3USB9281CGEEX require external components for basic operation?
Yes - a 0.1µF decoupling capacitor on VDDIO and a 10kΩ pull-up on ENB are required for default-enable operation. An external 10kΩ pull-up on INTB is recommended for proper interrupt signaling. No external current-sense resistor or gate driver is needed, as OCP and power switching are fully integrated.
Can the PI3USB9281CGEEX be used with USB 3.0 or USB-C ports?
No - the PI3USB9281CGEEX is designed exclusively for USB 2.0 data paths (D+/D−) and micro-USB or mini-USB form factors. It lacks SuperSpeed lanes, CC pin handling, or USB-C configuration channel logic. For USB-C, Diodes offers the AP2122K or AP22850 series, not this part.
How is over-voltage protection triggered on the VBUSIN pin?
Over-voltage protection activates when VBUSIN exceeds 6.8V (typical), causing the internal power switch to disconnect VBUSOUT within 1 µs. The OVP threshold is factory-trimmed and does not require external resistive dividers. After fault clearance, auto-recovery occurs only upon ENB deassertion and reassertion or power cycle.
PI3USB9281CGEEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 15-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Mobile Communications
- Current - Supply:
- -
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-CSP (1.5x2.0)
PI3USB9281CGEEX FAQ
1.How can I place an order for PI3USB9281CGEEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3USB9281CGEEX 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 PI3USB9281CGEEX reliable?
The price and inventory of PI3USB9281CGEEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3USB9281CGEEX is usually 5 days.
3.What payment methods are accepted for PI3USB9281CGEEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3USB9281CGEEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3USB9281CGEEX?
PI3USB9281CGEEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3USB9281CGEEX 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 PI3USB9281CGEEX?
For technical support, including PI3USB9281CGEEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3USB9281CGEEX requirements.
6.How does Aetrix verify that PI3USB9281CGEEX is sourced from the original manufacturer or authorized distributors?
All PI3USB9281CGEEX 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 PI3USB9281CGEEX meets industry standards.
7.What is the process for return or replacement of PI3USB9281CGEEX?
All PI3USB9281CGEEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3USB9281CGEEX, 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 PI3USB9281CGEEX part is unused and in its original packaging.
Return procedure for PI3USB9281CGEEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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