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Diodes Incorporated PI5USB2544ZHEX
- Part No.:
- PI5USB2544ZHEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Analog Switches - Special Purpose
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
PI5USB2544ZHEX.pdf
- Description:
- IC USB CNTRL DETECT SWTCH 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,601
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Product details
Overview
PI5USB2544ZHEX from Diodes Incorporated is a USB charging port controller and integrated high-side power switch with USB 2.0 high-speed data-line (D+/D−) switching capability. It supports BC1.2 CDP/DCP, YD/T 1591-2009 Shorted Mode, Divider-1A/2A, and DCP-1.2V charging protocols; features 73 mΩ (typ.) RDS(on), adjustable current limit up to 2.5 A (typ.), and operates from 4.5 V to 5.5 V - deployed in notebook USB ports for compliant fast-charging handsets.
For engineers reviewing the PI5USB2544ZHEX datasheet, PI5USB2544ZHEX pinout, PI5USB2544ZHEX application, or PI5USB2544ZHEX equivalent, key selection criteria include BC1.2 mode compatibility, programmable load-detect thresholds (550–765 mA), SDP/CDP auto-switching logic, and integrated 2.0 GHz bandwidth analog switch for full-speed USB 2.0 signal integrity.
Technical Context
The PI5USB2544ZHEX integrates a 73 mΩ high-side MOSFET power switch, dual-channel USB 2.0 analog switch (2 Ω typ. on-resistance, 2.0 GHz −3 dB bandwidth), and a multi-mode charging controller that implements BC1.2-compliant detection sequences via configurable CTL1–CTL3 and ILIM_SEL pins. It supports both S0 (active) and S3 (sleep) wake-up via mouse/keyboard enumeration.
Its charging logic autonomously selects among SDP, CDP, DCP, Divider-1A/2A, and DCP-1.2V modes using D+/D− voltage signature generation and load-current-based detection (550–765 mA rising threshold). Fault protection includes overcurrent deglitch (5–12 ms), thermal shutdown at 170 °C, and active-low open-drain FAULT output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 5.5 V - compatible with standard USB 5 V supply rails and tolerant of typical wall adapter ripple. |
| RDS(on) | 73 mΩ (typ.) at 25 °C - enables low conduction loss and <100 mW dissipation at 2.5 A, reducing thermal design burden. |
| Max Continuous Output Current | 2.5 A - supports high-power charging for tablets and smartphones without external current-limiting circuitry. |
| USB Data Switch Bandwidth | 2.0 GHz (−3 dB) - preserves USB 2.0 high-speed (480 Mbps) signal integrity with <0.25 ns propagation delay. |
| Load Detect Threshold | 550–765 mA (rising) - enables reliable S4/S5 charging detection while rejecting noise-induced false triggers. |
| Quiescent Current (Enabled) | 165–250 μA - minimizes standby power draw in always-on USB hub applications. |
| Charging Mode Support | BC1.2 CDP/DCP, YD/T 1591 Shorted Mode, Divider-1A/2A, DCP-1.2V - covers >95% of legacy and OEM smartphone charging signatures. |
Pinout & Package
TQFN-16 (3.0 mm × 3.0 mm, ZH suffix) with exposed thermal pad internally connected to GND - optimized for compact USB port designs requiring efficient heat dissipation on 2-layer PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power input | Connects to 5 V rail; requires ≥0.1 μF ceramic decoupling capacitor placed adjacent to pin for stable switching. |
| 2 DM_OUT / 3 DP_OUT | USB 2.0 data output to host controller | High-bandwidth analog switch outputs; routed directly to USB PHY with controlled impedance trace routing. |
| 4 ILIM_SEL | Mode select input | Logic-level control selecting between low/high current-limit thresholds and associated charging modes (e.g., Divider vs. DCP). |
| 5 EN | Global enable | Active-high logic input enabling/disabling both power switch and data switches; drives OUT into discharge state when low. |
| 6–8 CTL1–CTL3 | Charging mode configuration | Three-pin truth table defines SDP/CDP/DCP/Divider operation; no pull resistors required - direct tie to IN or GND suffices. |
| 10 DP_IN / 11 DM_IN | USB 2.0 data input from downstream connector | Accepts D+/D− signals from USB Type-A receptacle; internal ESD protection rated to 6 kV HBM on these pins. |
| 12 OUT | Switched 5 V output | Delivers regulated 5 V to downstream device; includes internal discharge path (RDCHG = 500 Ω typ.) for safe hot-plug removal. |
| 13 FAULT | Open-drain fault indicator | Asserts low during overcurrent or overtemperature; requires external 10 kΩ pull-up for system-level interrupt signaling. |
| 14 GND | Ground reference | Primary return path for power and signal currents; must be connected to low-impedance ground plane under exposed thermal pad. |
| 15 ILIM_LO / 16 ILIM_HI | Current-limit resistor inputs | Accept external resistors (16.9–750 kΩ) to set dual current thresholds for load detection and overcurrent protection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 analog switch | 2.0 Ω typ. on-resistance and 2.0 GHz bandwidth preserve eye diagram integrity for 480 Mbps signaling without external buffers. |
| Multi-standard charging detection | Hardware-accelerated BC1.2 CDP handshake, YD/T 1591 Shorted Mode, and OEM-specific Divider/DCP-1.2V signatures eliminate firmware dependency. |
| S3 wake-up support | Enables mouse/keyboard enumeration from sleep state without host CPU involvement - critical for Windows Modern Standby compliance. |
| Dual-threshold current limiting | Separate ILIM_LO/ILIM_HI resistor inputs allow independent tuning of load-detect (550–765 mA) and overcurrent (2.0–3.2 A) trip points. |
| Thermal and fault robustness | 170 °C thermal shutdown with 20 °C hysteresis and 5–12 ms OC deglitch prevent nuisance tripping during transient inrush events. |
Applications
| USB Host Port Charging | Notebook Embedded Hub |
|---|---|
|
Use Scenario: Integrated USB-A port on a Windows laptop motherboard delivering fast charge to smartphones during S0 and S3 states. IC Role / Device Role / Timing Role: Acts as BC1.2-compliant charging controller and power switch, managing D+/D− signature generation, current limiting, and FAULT reporting to EC. Use Value: Enables OEM-certified 1.5 A CDP charging without BIOS/firmware modification and supports Modern Standby wake-on-keyboard. |
Use Scenario: Downstream port on a discrete USB 2.0 hub IC inside an industrial thin client, requiring robust short-circuit tolerance and low quiescent current. IC Role / Device Role / Timing Role: Provides high-side power switching and data-path isolation; handles 2.5 A peak loads while maintaining <250 μA enabled supply current. Use Value: Eliminates need for discrete MOSFET + gate driver + USB switch, reducing BOM count by 4 components and saving 8 mm² PCB area. |
| Universal Wall Adapter | Desktop Motherboard USB Header |
|
Use Scenario: Single-port 5 V/2.4 A wall charger supporting Apple, Samsung, and BC1.2 devices via automatic mode detection. IC Role / Device Role / Timing Role: Emulates DCP, Divider-2A, and DCP-1.2V signatures using CTL pin logic; sets 2.4 A current limit via ILIM_HI resistor. Use Value: Achieves >92% efficiency at 2 A load due to 73 mΩ RDS(on), reducing heatsink requirements versus discrete FET solutions. |
Use Scenario: Front-panel USB 2.0 header on ATX motherboard where ESD robustness and S4/S5 charging are mandatory for OEM certification. IC Role / Device Role / Timing Role: Performs load detection (550–765 mA threshold) to initiate charging in S4/S5 and asserts FAULT during overtemperature events. Use Value: Meets USB-IF ESD requirements (6 kV HBM on DP/DM pins) and provides traceable fault logging via open-drain FAULT pin. |
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 |
|---|---|---|---|
| TPS2546RTET | Single 2.5 A channel; supports BC1.2 only (no YD/T 1591 or Divider modes); lacks integrated USB data switch. | Requires external USB 2.0 switch IC and separate ESD protection; suitable for cost-sensitive single-mode designs. | Choose when BC1.2-only compliance suffices and board space allows discrete signal switching. |
| IP5306 | Monolithic power bank SoC with battery charging; no USB data switching; limited to 2.1 A max output; no FAULT pin. | Targeted at portable power banks, not host-side USB ports; lacks S3 wake-up and host-controlled mode selection. | Use only in self-contained battery-powered accessories - not a drop-in replacement for host port control. |
Compared with TPS2546RTET and IP5306, the PI5USB2544ZHEX uniquely combines BC1.2/YD/T 1591/Divider mode support, integrated 2.0 GHz USB switch, and S3 wake-up in a single TQFN-16 package - making it the only solution qualified for Windows-certified notebook USB charging subsystems.
Availability
PI5USB2544ZHEX is available at Aetrix Electronics and suitable for notebook USB host ports, universal wall adapters, and desktop motherboard front-panel headers requiring stable component supply, long-term lifecycle assurance, and full BC1.2/YD/T 1591 compliance.
Supply support for PI5USB2544ZHEX 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, specializing in power management, signal integrity, and connectivity solutions for consumer, computing, and industrial markets.
The PI5USB2544ZHEX belongs to Diodes' USB interface and charging controller product line, designed specifically to simplify USB port compliance across Windows, Android, and legacy OEM ecosystems while minimizing firmware overhead and PCB footprint.
FAQ
What USB charging standards does the PI5USB2544ZHEX support?
The PI5USB2544ZHEX supports USB Battery Charging Specification 1.2 (BC1.2) CDP and DCP modes, Chinese Telecommunications Standard YD/T 1591-2009 Shorted Mode, plus non-BC1.2 OEM modes including Divider-1A, Divider-2A, and DCP-1.2V. It does not support USB PD or QC protocols.
Can the PI5USB2544ZHEX operate in system sleep states like S3?
Yes - the PI5USB2544ZHEX supports S3 (suspend-to-RAM) wake-up via USB mouse or keyboard enumeration. Its internal logic detects low-speed/full-speed device attachment on DP_IN/DM_IN and asserts wake signal through host-controlled EN or CTL lines without CPU intervention.
How is current limiting configured on the PI5USB2544ZHEX?
Current limiting is set using two external resistors: ILIM_LO configures the load-detection threshold (550–765 mA), and ILIM_HI sets the overcurrent trip point (2.0–3.2 A). ILIM_SEL selects between these thresholds, and CTL pins determine operating mode - no I²C or firmware required.
Does the PI5USB2544ZHEX require external USB data-line ESD protection?
No - the PI5USB2544ZHEX includes integrated 6 kV HBM ESD protection on DP_IN, DM_IN, DP_OUT, and DM_OUT pins per USB-IF requirements. External TVS diodes are unnecessary unless system-level IEC 61000-4-2 level 4 (8 kV contact) testing is mandated.
PI5USB2544ZHEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- USB
- Multiplexer/Demultiplexer Circuit:
- -
- Switch Circuit:
- -
- Number of Channels:
- 1
- On-State Resistance (Max):
- -
- Voltage - Supply, Single (V+):
- 4.5V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- -3db Bandwidth:
- 2GHz
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
PI5USB2544ZHEX FAQ
1.How can I place an order for PI5USB2544ZHEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI5USB2544ZHEX 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 PI5USB2544ZHEX reliable?
The price and inventory of PI5USB2544ZHEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5USB2544ZHEX is usually 5 days.
3.What payment methods are accepted for PI5USB2544ZHEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5USB2544ZHEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI5USB2544ZHEX?
PI5USB2544ZHEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI5USB2544ZHEX 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 PI5USB2544ZHEX?
For technical support, including PI5USB2544ZHEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5USB2544ZHEX requirements.
6.How does Aetrix verify that PI5USB2544ZHEX is sourced from the original manufacturer or authorized distributors?
All PI5USB2544ZHEX 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 PI5USB2544ZHEX meets industry standards.
7.What is the process for return or replacement of PI5USB2544ZHEX?
All PI5USB2544ZHEX units undergo pre-shipment inspection (PSI). If there is an issue with PI5USB2544ZHEX, 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 PI5USB2544ZHEX part is unused and in its original packaging.
Return procedure for PI5USB2544ZHEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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