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STMicroelectronics STCC5021IQTR
- Part No.:
- STCC5021IQTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
STCC5021IQTR.pdf
- Description:
- IC PWR SWITCH N-CH 1:1 16VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,968
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Product details
Overview
STCC5021IQTR from STMicroelectronics is a USB charging controller IC integrating a BC1.2-compliant charger emulator, wide-bandwidth USB 2.0 data switch (1100 MHz), and low-RON (65 mΩ typ.) N-channel power switch. It supports DCP/CDP/SDP modes, Apple 2 A divider mode, YD/T 1591-2009, and proprietary charging protocols. Designed for host-side USB port charging in battery-powered PCs during S4/S5/G3 states.
For engineers reviewing the STCC5021IQTR datasheet, STCC5021IQTR pinout, STCC5021IQTR application, or STCC5021IQTR equivalent, this device delivers attach detection in deep sleep, adjustable current limiting (500 mA–2.8 A), deglitched fault reporting, reverse voltage/current protection, and 3-hour safety timer for S5 charging - critical for low-power host system design.
Technical Context
The STCC5021 implements a multi-mode USB BC1.2 emulator with programmable CTL1–CTL3 inputs selecting between SDP, CDP, DCP auto-detect, forced DCP BC1.2, or forced DCP divider (Apple 2 A) profiles. Its integrated data switch maintains <2.7 Ω RON and 1100 MHz bandwidth to preserve USB 2.0 signal integrity.
The power switch features constant-current overcurrent protection, soft-start, thermal shutdown (TSTOP = 150 °C), and VBUS discharge via internal 200 Ω resistor. The CHARGING/ATTACH output asserts active-low when IOUT > 20 mA in DCP/CDP modes or after attach detection, enabling host-controlled DC-DC enable/disable for power savings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | BC1.2, USB 2.0, USB 3.0, YD/T 1591-2009, Apple 2 A divider, BlackBerry, Korean tablet |
| Data Switch Bandwidth | 1100 MHz - preserves full-speed/high-speed USB 2.0 eye diagram integrity |
| Power Switch RON | 65 mΩ typ. at 25 °C - minimizes VBUS drop and thermal dissipation at 2.5 A load |
| Adjustable Current Limit | 500 mA to 2.8 A via ILIM resistor - enables precise host-side charge current tuning |
| Safety Timer | 3-hour timeout after attach detection in S5 - prevents unattended overcharge in battery-powered hosts |
| Operating Temp Range | −40 °C to +85 °C ambient - qualified for notebook, all-in-one PC, and monitor thermal environments |
| Package | VFQFPN 16L (3 × 3 × 0.8 mm) with exposed pad - enables compact PCB layout and efficient thermal transfer |
Pinout & Package
Supplied in a RoHS-compliant VFQFPN 16L package (3 mm × 3 mm × 0.8 mm) with exposed thermal pad for junction-to-PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input | VIN supply (4.5–5.5 V) for power switch and data switch domains |
| OUT | Power output | VBUS output to USB connector; driven by integrated N-channel switch |
| DP_IN / DM_IN | USB upstream data interface | Connects to USB connector D+ and D−; used for BC1.2 emulation and attach detection |
| DP_OUT / DM_OUT | USB downstream data interface | Connects to host controller; passes high-speed data with <4 Ω RON and 47 dB crosstalk suppression |
| CTL1–CTL3 | Mode selection inputs | 3-bit logic control for charger profile selection (e.g., 101 = Apple 2 A divider) |
| EN | Global enable | Active-high input disabling power/data switches and emulator (except attach detector if ATTACH_EN = high) |
| ATTACH_EN | Attach detector control | Enables G3-state device attachment monitoring; disables 3-hour timer when pulled low |
| CHARGING/ATTACH | Open-drain status output | Asserts low on device attach or IOUT > 20 mA in DCP/CDP - triggers host DC-DC enable |
| FAULT | Open-drain fault output | Asserts low on overcurrent, thermal shutdown, or reverse voltage - deglitched with 9 ms delay |
| ILIM | Current limit programming | Resistor-connected node setting precise current threshold (500 mA–2.8 A) with ±10% accuracy |
| VDD | Attach detector supply | 1.7–5.5 V supply dedicated to attach circuitry; must be powered before VIN |
| GND | Ground reference | Common return for power, data, and logic domains; tied to exposed pad |
Key Features
| Feature | Design Value |
|---|---|
| Integrated BC1.2 + Proprietary Emulation | Supports Apple 2 A divider (iPad), BlackBerry, Korean tablets, and legacy devices without external components |
| Low-Loss USB 2.0 Data Path | 1100 MHz bandwidth and <4 Ω RON ensure minimal signal distortion for full-speed/high-speed operation |
| Intelligent Power Management | CHARGING/ATTACH assertion enables host to power-cycle high-efficiency DC-DC converters only during active charge |
| Robust Protection Suite | Includes reverse voltage (60 mV threshold), reverse current, undervoltage lockout (4.1 V), and thermal shutdown (150 °C) |
| G3-State Attach Detection | Detects peripheral connection while host is fully shut down; asserts CHARGING/ATTACH for 25 s to wake host |
Applications
| USB Notebook Charging Port | All-in-One PC Front Panel Hub |
|---|---|
|
Use Scenario: Notebook provides USB charging during S5 (soft-off) state while running on battery. IC Role / Device Role / Timing Role: STCC5021IQTR emulates Apple 2 A wall charger, detects device attach in G3, and asserts CHARGING/ATTACH to enable DC-DC converter only when needed. Use Value: Reduces standby power consumption by >95% compared to always-on VBUS, extending battery life during off-state charging. |
Use Scenario: All-in-one PC front-panel USB ports must support fast charging and data sync without host CPU intervention. IC Role / Device Role / Timing Role: Acts as autonomous BC1.2/CDP emulator and data switch; handles CDP negotiation and current limiting independently of OS state. Use Value: Enables plug-and-play charging and file transfer even when host is in S3 sleep, eliminating user wait time for resume. |
| Monitor Integrated USB Hub | Universal Wall Adapter Reference Design |
|
Use Scenario: Monitor with built-in USB hub supplies power and data to peripherals while main system is off. IC Role / Device Role / Timing Role: Provides DCP auto-detect mode with 3-hour safety timer and reverse current blocking to prevent backfeed into monitor power rail. Use Value: Eliminates need for separate charging IC and isolates hub VBUS from monitor's 5 V supply, improving system reliability. |
Use Scenario: OEM designs universal AC-DC adapter supporting multiple device types (iPhone, iPad, Android tablets). IC Role / Device Role / Timing Role: Serves as core USB PD-agnostic charging controller; uses CTL pins to configure Apple 2 A, BC1.2 DCP, and Korean tablet modes. Use Value: Single BOM item replaces multiple discrete emulators, reducing bill-of-materials cost and PCB area by 40% vs. discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB charging controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB211IRWYR | Single-function USB 2.0 data switch only; no charger emulation, power switch, or attach detection | Requires external BC1.2 emulator and MOSFET driver; not suitable for S5/G3 attach detection | Select only if host already implements full BC1.2 logic and needs only signal routing |
| TPS2546RTER | Integrated BC1.2 controller + 2.5 A switch but lacks USB data switch and G3 attach detection | Cannot pass USB 2.0 data during charging; requires separate data path; no 3-hour S5 safety timer | Choose when data passthrough is unnecessary and lower BOM count outweighs missing attach detection |
Compared with TUSB211IRWYR and TPS2546RTER, STCC5021IQTR uniquely combines BC1.2 emulation, high-bandwidth data switching, and G3-state attach detection in one die - enabling true "always-ready" USB charging without host CPU involvement or external components.
Availability
STCC5021IQTR is available at Aetrix Electronics and suitable for USB notebook charging ports, all-in-one PC front-panel hubs, and monitor-integrated USB hubs requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for STCC5021IQTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power management, and USB interface solutions for industrial, automotive, and computing markets.
STCC5021IQTR belongs to ST's USB Battery Charging (BC) controller product line, engineered specifically to simplify host-side USB port charging architecture while meeting stringent power efficiency, safety, and interoperability requirements across Windows, macOS, and Android ecosystems.
FAQ
What distinguishes STCC5021IQTR from STCC5011IQTR?
STCC5021IQTR supports Apple 2 A divider mode (iPad charging), delivering up to 2.8 A with RDM/RDP = 27 kΩ and VDM_2A = 1.96–2.04 V, whereas STCC5011IQTR is limited to 1 A (VDM_1A = 2.65–2.75 V). Both share identical pinout, package, and feature set except for the Apple profile configuration.
How does the 3-hour safety timer function in S5 mode?
The timer starts only after device attachment is detected and IOUT exceeds 20 mA. It runs continuously in S5 and deasserts CHARGING/ATTACH after exactly 3 hours, forcing host DC-DC shutdown. It can be disabled by pulling ATTACH_EN low before timer expiry.
Can STCC5021IQTR operate without VDD applied?
No. VDD (1.7–5.5 V) must be supplied before VIN to power the attach detector circuit. If VDD is absent or below 1.7 V, attach detection, CHARGING/ATTACH assertion, and VDD-domain functions (including ATTACH_EN control) are non-operational, though power switch may remain functional if EN is asserted.
What is the purpose of the deglitched FAULT output?
The FAULT pin asserts low for ≥7 ms only after confirmed overcurrent, thermal shutdown (>150 °C), or reverse voltage (>60 mV), preventing false trips from transient events. Its 9 ms typical deglitch delay ensures robust fault reporting in noisy power environments.
STCC5021IQTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 16-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- -
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 4.5V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 2.8A
- Rds On (Typ):
- 65mOhm
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VFQFPN (3x3)
STCC5021IQTR FAQ
1.How can I place an order for STCC5021IQTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STCC5021IQTR 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 STCC5021IQTR reliable?
The price and inventory of STCC5021IQTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STCC5021IQTR is usually 5 days.
3.What payment methods are accepted for STCC5021IQTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STCC5021IQTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STCC5021IQTR?
STCC5021IQTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STCC5021IQTR 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 STCC5021IQTR?
For technical support, including STCC5021IQTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STCC5021IQTR requirements.
6.How does Aetrix verify that STCC5021IQTR is sourced from the original manufacturer or authorized distributors?
All STCC5021IQTR 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 STCC5021IQTR meets industry standards.
7.What is the process for return or replacement of STCC5021IQTR?
All STCC5021IQTR units undergo pre-shipment inspection (PSI). If there is an issue with STCC5021IQTR, 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 STCC5021IQTR part is unused and in its original packaging.
Return procedure for STCC5021IQTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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