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Diodes Incorporated PI5USB2546ZHEX
- Part No.:
- PI5USB2546ZHEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
PI5USB2546ZHEX.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
PI5USB2546ZHEX from Diodes Incorporated is a USB charging port controller and high-side power switch with integrated USB 2.0 D+/D– data-line switching, 73-mΩ RDS(on), adjustable current limit up to 3 A, BC1.2/CDP/DCP/YD/T1591-2009 compliance, and S3 wake-up support for mouse/keyboard. It enables intelligent load detection and port power management in notebook motherboard USB ports.
For engineers reviewing the PI5USB2546ZHEX datasheet, PI5USB2546ZHEX pinout, PI5USB2546ZHEX application, or PI5USB2546ZHEX equivalent, key selection criteria include BC1.2-compliant charging mode detection accuracy, 73-mΩ on-resistance under 5 V supply, /STATUS-driven PPM control, and TQFN-16 thermal performance in multi-port host systems.
Technical Context
The PI5USB2546ZHEX implements dual-mode USB port classification: hardware-based D+/D– signature generation for CDP/DCP/SDP/shorted modes per BC1.2 and YD/T1591-2009, plus automatic fallback to non-BC1.2 modes (Divider-1A/2A, DCP-1.2V). Its /STATUS pin delivers open-drain logic output for coordinated port power management across multiple controllers.
It integrates a single high-side MOSFET with 73-mΩ typical RDS(on), operates from 4.5 V to 5.5 V, draws only 270 μA when enabled, and supports S3 wake-up via D+ or D– line activity - enabling legacy HID device resume without host CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 5.5 V - ensures stable operation across USB VBUS tolerance and low-dropout regulator margins. |
| RDS(on) (Typ.) | 73 mΩ - minimizes conduction loss and self-heating during 3 A continuous load in TQFN-16 package. |
| Adjustable Current Limit | Up to 3 A (typ.) - programmable via ILIM_SEL pin to match system-level fuse and cable derating requirements. |
| Quiescent Current | 270 μA (enabled), 2 μA (disabled) - enables always-on port monitoring with negligible standby power impact. |
| USB Data Switch | Integrated D+/D– 2-channel analog switch - preserves USB 2.0 HS signal integrity without external mux or routing complexity. |
| Charging Mode Support | BC1.2 CDP/DCP/SDP + YD/T1591 shorted mode + Divider-1A/2A/DCP-1.2V - covers >95% of legacy and regional mobile devices. |
Pinout & Package
Package: TQFN-16 (3.0 mm × 3.0 mm, 0.5 mm pitch, exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBUS | Input power rail | Accepts 4.5–5.5 V USB supply; feeds internal LDO and high-side FET source. |
| OUT | Switched output | Delivers regulated VBUS to downstream port; connects to USB receptacle VBUS pin. |
| D+IN / D–IN | Upstream data interface | Receives USB 2.0 HS signals from host controller or hub upstream port. |
| D+OUT / D–OUT | Downstream data interface | Routes HS signals to USB receptacle; includes integrated analog switch with <1.5 Ω Ron. |
| /STATUS | Open-drain status output | Asserts low during overcurrent, thermal shutdown, or active charging mode - used for PPM and S4/S5 load detection. |
| CTL1–CTL3 | Mode configuration inputs | Three-pin binary encoding selects charging mode priority (e.g., CDP-first vs. DCP-first). |
| ILIM_SEL | Current limit select | Two-state input sets current threshold to 1.5 A or 3 A (typ.) for load detection and foldback. |
| GND | Power and signal reference | Common return for power path, logic, and thermal pad; requires low-impedance PCB plane connection. |
Key Features
| Feature | Design Value |
|---|---|
| BC1.2 & YD/T1591-2009 Compliance | Hardware-enforced D+/D– voltage signatures eliminate firmware dependency and ensure interoperability with certified chargers and phones. |
| S3 Wake-Up Support | D+ or D– line activity triggers /STATUS assertion and host interrupt - enables keyboard/mouse resume without polling or USB enumeration overhead. |
| Port Power Management (PPM) | /STATUS output synchronizes multi-port current limiting and thermal budgeting in notebook docking stations and desktop hubs. |
| Load Detection in S4/S5 | Monitors OUT pin current during deep sleep to enable controlled charging without waking host - critical for battery top-off in lid-closed state. |
| Integrated High-Side Switch | 73-mΩ RDS(on) MOSFET eliminates need for discrete power switch and reduces BOM count by one component per port. |
Applications
| USB Host Port on Notebook Motherboard | Multi-Port Desktop USB Hub |
|---|---|
Use Scenario: Integrated into laptop motherboard to manage front-panel or rear-panel USB-A ports with charging and wake capability. IC Role / Device Role / Timing Role: Acts as intelligent power switch and charging mode classifier between EC and USB receptacle; handles D+/D– handshaking autonomously. Use Value: Enables BC1.2-compliant fast charging and S3 wake-up without CPU involvement, reducing system power consumption by 270 μA per port in enabled state. | Use Scenario: Used in 4-port desktop hub to coordinate power allocation and prevent overcurrent across simultaneous device connections. IC Role / Device Role / Timing Role: Functions as per-port power manager with /STATUS-driven PPM logic; shares thermal and current budget across ports via daisy-chained control. Use Value: Prevents upstream overcurrent trips by dynamically limiting individual port current to 1.5 A or 3 A based on real-time /STATUS feedback and CTL pin configuration. |
| Universal Wall Charging Adapter | Industrial Embedded USB Charging Station |
Use Scenario: Embedded in compact AC/DC adapter to provide USB-A output with smart device detection and short-circuit protection. IC Role / Device Role / Timing Role: Serves as primary charging controller and power switch; generates required D+/D– signatures for Apple, Samsung, and Chinese standard devices. Use Value: Supports 7 distinct charging modes (including YD/T1591 shorted) in a single IC, eliminating need for multiple discrete resistor networks or microcontroller firmware. | Use Scenario: Deployed in kiosk or medical terminal to deliver reliable USB charging to peripherals while maintaining strict thermal and EMI constraints. IC Role / Device Role / Timing Role: Provides robust 73-mΩ power switching with integrated overtemperature shutdown and 2 μA disabled-state leakage. Use Value: Withstands repeated hot-plug events and capacitive loads up to 1000 µF without latch-up, meeting IEC 61000-4-2 Level 4 ESD immunity at D+/D– pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charging port controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2546RTER | Higher RDS(on) (100 mΩ), fixed 3 A current limit, no YD/T1591 support, requires external resistors for D+/D– signature. | Lacks shorted-mode compliance; limited to BC1.2-only ecosystems; less suitable for China-market consumer devices. | Prefer when BC1.2-only coverage suffices and board space allows external resistor network. |
| IP2721 | Integrated MCU-based protocol stack, supports QC3.0/SCP/VOOC, but no native USB 2.0 data switch; requires external analog switch. | Targets proprietary fast-charge protocols over USB-A; not drop-in compatible for data-integrated host port designs. | Select only when proprietary charging (not BC1.2) is primary requirement and D+/D– switching can be handled externally. |
Compared with TPS2546RTER and IP2721, the PI5USB2546ZHEX uniquely combines BC1.2/YD/T1591 compliance, integrated D+/D– switching, and hardware-based PPM in a single TQFN-16 package - making it optimal for cost-sensitive, data-integrated host ports requiring broad legacy device compatibility.
Availability
PI5USB2546ZHEX is available at Aetrix Electronics and suitable for notebook motherboard USB ports, multi-port desktop hubs, and universal wall charging adapters requiring stable component supply, BC1.2-compliant charging, and integrated data-line switching.
Supply support for PI5USB2546ZHEX 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The PI5USB2546ZHEX belongs to Diodes' USB Power Delivery and Charging portfolio, designed specifically for host-side USB port intelligence - delivering plug-and-play charging mode detection, robust power switching, and system-level power state coordination without firmware overhead.
FAQ
What charging standards does the PI5USB2546ZHEX support?
The PI5USB2546ZHEX supports USB Battery Charging Specification 1.2 (CDP/DCP/SDP), Chinese Telecommunication Industry Standard YD/T1591-2009 (shorted mode), and three non-BC1.2 modes: Divider-1A, Divider-2A, and DCP-1.2V. It identifies and applies the correct D+/D– signature automatically without software intervention.
How does the /STATUS pin function in port power management?
The /STATUS pin is an open-drain output that asserts low during overcurrent, thermal shutdown, or active charging mode. In multi-port systems, it enables coordinated port power management (PPM) by signaling adjacent controllers to reduce current limits or disable ports, preventing upstream overcurrent faults.
Can the PI5USB2546ZHEX support USB 2.0 high-speed data pass-through?
Yes - it integrates a low-Ron analog switch for D+ and D– lines with <1.5 Ω typical on-resistance and maintains USB 2.0 high-speed signal integrity (≤1.5 dB insertion loss at 480 MHz). No external data switches or routing adjustments are required for full-speed or high-speed operation.
What is the thermal performance of the TQFN-16 package under 3 A load?
In a standard 4-layer PCB with 1-in² 2-oz copper thermal pad, the PI5USB2546ZHEX reaches ~65°C junction temperature at 3 A and 5 V input. Its thermal shutdown activates at 150°C, and the exposed pad must be soldered to a solid ground plane to achieve rated current and reliability.
PI5USB2546ZHEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- -
- 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:
- 4.5V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 2.5A
- Rds On (Typ):
- 73mOhm
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
PI5USB2546ZHEX FAQ
1.How can I place an order for PI5USB2546ZHEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI5USB2546ZHEX 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 PI5USB2546ZHEX reliable?
The price and inventory of PI5USB2546ZHEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5USB2546ZHEX is usually 5 days.
3.What payment methods are accepted for PI5USB2546ZHEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5USB2546ZHEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI5USB2546ZHEX?
PI5USB2546ZHEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI5USB2546ZHEX 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 PI5USB2546ZHEX?
For technical support, including PI5USB2546ZHEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5USB2546ZHEX requirements.
6.How does Aetrix verify that PI5USB2546ZHEX is sourced from the original manufacturer or authorized distributors?
All PI5USB2546ZHEX 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 PI5USB2546ZHEX meets industry standards.
7.What is the process for return or replacement of PI5USB2546ZHEX?
All PI5USB2546ZHEX units undergo pre-shipment inspection (PSI). If there is an issue with PI5USB2546ZHEX, 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 PI5USB2546ZHEX part is unused and in its original packaging.
Return procedure for PI5USB2546ZHEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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