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Texas Instruments TSU8111YFPR
- Part No.:
- TSU8111YFPR
- Manufacturer:
- Texas Instruments
- Package:
- 20-XFBGA, DSBGA
- Datasheet:
-
TSU8111YFPR.pdf
- Description:
- IC PWR SWITCH 1:1 20DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,137
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Product details
Overview
TSU8111YFPR from Texas Instruments is a dual SP2T USB 2.0 high-speed analog switch with integrated single-cell linear charger and LDO output. It performs automatic accessory detection (5-bit ID resistor), BCv1.1-compliant charger identification, and programmable fast-charge current up to 950 mA. It operates from VBUS (4–6.5 V) or VBAT (3–4.4 V) and supports UART/USB signal routing in mobile phone docking systems.
For engineers reviewing the TSU8111YFPR datasheet, TSU8111YFPR pinout, TSU8111YFPR application, or TSU8111YFPR equivalent, this device serves as a system-level USB interface and battery charging controller-requiring attention to I²C register mapping (e.g., Reg 22h for ISET), thermal regulation behavior above 85°C, VBUS overvoltage protection thresholds (7.5 V default), and dual-path switching timing (ton = 57 µs, toff = 5.2 µs).
Technical Context
The TSU8111YFPR integrates two independent SP2T switch matrices: one for DP/DM signals between host (HT) and connector (CON) sides, and another supporting UART (RxD/TxD) path selection. Switch control is implemented via state machine-driven automatic mode (based on ID resistor or BCv1.1 detection) or manual I²C register writes (Reg 13h).
Its linear charger uses internal feedback to regulate VLDO at 4.2 V (±1%) with programmable ISET (200–950 mA, ±8% accuracy) and IFULL (50–200 mA). Charging progression follows pre-charge → fast-charge → constant-voltage phases, with thermal regulation reducing current above 85°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SP2T USB 2.0 analog switch with UART path support |
| Max Data Rate | 480 Mbps (USB 2.0 High Speed compliant, BW = 820 MHz) |
| On-resistance (RON) | 8 Ω typical; ensures <1% signal attenuation at 2.7 V common-mode |
| Charging Voltage Accuracy | ±1% at 4.2 V (I²C Reg 21h configurable from 4.02–4.35 V) |
| Fast-Charge Current Range | 200–950 mA (I²C Reg 22h [3:0], ±8% accuracy) |
| VBUS Overvoltage Protection | 7.5 V default (I²C Reg 22h [7:6] selectable: 6.0/6.5/7.0/7.5 V) |
| ESD Rating (VBUS/DP/DM/ID) | ±4 kV contact discharge (IEC 61000-4-2), 12 kV HBM |
Pinout & Package
TSU8111YFPR uses a 20-pin DSBGA (YFP) package measuring 2.14 mm × 1.76 mm with 0.4-mm pitch. The bottom-side ball layout matches the YFP package drawing in TI SCDS335A (Rev. A, Aug 2014).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DP_CON / DM_CON / ID_CON | USB receptacle interface pins | Connect directly to micro-USB connector; tolerate 28 V transient (OVP active) |
| DP_HT / DM_HT | Device-side USB data lines | Routed to SoC USB PHY; switched under automatic/manual control |
| RxD / TxD | UART path I/O | Supports bidirectional UART signaling while passing USB HS signals when enabled |
| SCL / SDA | I²C interface | Operate at 64–400 kHz; VDDIO-referenced (1.65–3.6 V) |
| INTB | Interrupt output | Active-high push-pull signal indicating attach/detach or charge status |
| VLDO | LDO charger output | Delivers regulated 4.2 V (configurable) to battery; requires ≥1 μF ceramic output cap |
| VBAT / VBUS | Power inputs | VBAT (3–4.4 V) primary supply; VBUS (4–6.5 V) enables charger and powers switch logic |
Key Features
| Feature | Design Value |
|---|---|
| Automatic accessory detection | 5-bit ID resistor decoding per Table 1; identifies OTG, UART, audio, factory cables, and BCv1.1 chargers without host intervention |
| Integrated linear charger | Eliminates external charger IC; supports full charge cycle (pre-charge → CC → CV) with programmable ISET and VSET registers |
| USB 2.0 signal integrity | 8 Ω RON, 0.7 Ω flatness, –36 dB off-isolation at 240 MHz ensure eye diagram compliance for 480 Mbps operation |
| Robust system protection | 28-V tolerant VBUS pin with OVP, ±4-kV IEC contact ESD on USB pins, and thermal shutdown above safe junction temperature |
| I²C-controlled switching | Register 13h enables precise manual control of DP/DM path selection-critical for manufacturing test (JIG/BOOT) and debug modes |
Applications
| Mobile Phone Docking Station | Tablet USB Peripheral Hub |
|---|---|
Use Scenario: Connects smartphone to USB peripherals (keyboard/mouse/storage) while simultaneously charging via wall adapter. IC Role / Device Role / Timing Role: Dual SP2T switch routes DP/DM between phone and host; integrated charger delivers 950 mA to Li-ion battery using VBUS input. Use Value: Eliminates need for separate USB switch and charger IC-reducing BOM count by two components and PCB area by >15 mm². |
Use Scenario: Enables tablet to act as USB host for OTG accessories while maintaining battery charge during extended use. IC Role / Device Role / Timing Role: Detects OTG cable (0 kΩ ID) and automatically configures DP/DM HT→CON path; VLDO supplies stable 4.2 V to battery during host operation. Use Value: Supports concurrent data transfer and charging without voltage droop or thermal throttling-validated across –40°C to 85°C ambient. |
| Factory Test Fixture (JIG Mode) | USB-C to Micro-USB Adapter with Charging |
Use Scenario: Automated production line tests tablet USB functionality using dedicated JIG cable with 255 kΩ ID resistor. IC Role / Device Role / Timing Role: BOOT and JIG pins assert factory test mode; I²C disables auto-detection and forces UART path for firmware loading. Use Value: Enables deterministic pin-level control during burn-in and calibration-reducing test time by 30% vs software-based switching. |
Use Scenario: Passive adapter converts USB-C power/data to micro-USB while delivering up to 950 mA to legacy devices. IC Role / Device Role / Timing Role: Detects USB-C DCP via BCv1.1 handshake on DP/DM; routes VBUS to VLDO and switches DP/DM to micro-USB port. Use Value: Achieves BCv1.1 compliance without external level shifters-meets USB-IF certification requirements for charging adapters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB switch + charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB3200IRHBR | Single SPDT USB 2.0 switch only; no integrated charger or LDO | Requires external charger IC and power management; lacks ID resistor detection and BCv1.1 support | Choose when only signal routing is needed and charging is handled elsewhere |
| BQ24160RGTR | Dedicated single-cell linear charger only; no USB switching or UART path | Cannot route USB/UART signals; requires companion USB switch and accessory detection circuitry | Choose when higher charge current (>950 mA) or switching flexibility beyond dual SP2T is required |
Compared with TSU8111YFPR, TUSB3200IRHBR offers lower RON (5 Ω) but no power management integration, while BQ24160RGTR provides 1.2-A charge current and JEITA thermistor support but adds design complexity and board space. TSU8111YFPR uniquely combines both functions in a 2.14 × 1.76 mm DSBGA.
Availability
TSU8111YFPR is available at Aetrix Electronics and suitable for mobile phone docking stations, tablet peripheral hubs, factory test fixtures, and USB adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for TSU8111YFPR 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and interface solutions.
The TSU8111YFPR belongs to TI's USB interface and battery charging product line, designed specifically for space-constrained portable electronics needing integrated signal routing and single-cell Li-ion charging in one chip.
FAQ
What is the maximum supported USB data rate for TSU8111YFPR?
The TSU8111YFPR supports full USB 2.0 High Speed operation at 480 Mbps, verified by 820-MHz bandwidth, –36 dB off-isolation at 240 MHz, and <8-Ω on-resistance. Its switch architecture maintains signal integrity across the entire frequency range without external termination or equalization.
How does TSU8111YFPR handle USB charger detection?
The TSU8111YFPR implements USB Battery Charging Specification v1.1 (BCv1.1) detection by monitoring DP/DM line voltages when no ID resistor is present. It identifies SDP, CDP, and DCP types and configures the switch matrix accordingly-e.g., connecting DP/DM CON→HT for DCP to enable charging-only mode.
Can TSU8111YFPR operate without a battery connected?
Yes, TSU8111YFPR can operate from VBUS alone (4–6.5 V) with VBAT floating. In this configuration, the LDO charger remains disabled, but USB switching, accessory detection, and I²C communication remain fully functional-enabling use in powered-hub or adapter applications.
What is the purpose of the VLDO pin on TSU8111YFPR?
The VLDO pin on TSU8111YFPR is the output of the integrated low-dropout linear regulator that supplies regulated charging voltage (default 4.2 V) to the battery. It requires a minimum 1-μF ceramic capacitor to ground and delivers up to 50 mA output current when VBUS is absent.
How is fast-charge current programmed on TSU8111YFPR?
Fast-charge current on TSU8111YFPR is set via I²C register 22h bits [3:0], which selects values from 200 mA to 950 mA in 50-mA steps. The setting is latched after write and takes effect immediately upon entry into fast-charge phase-subject to thermal regulation if junction temperature exceeds 85°C.
TSU8111YFPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-XFBGA, DSBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- -
- Output Type:
- -
- Interface:
- I2C
- Voltage - Load:
- 1.65V ~ 6.5V
- Voltage - Supply (Vcc/Vdd):
- -
- Current - Output (Max):
- 1A
- Rds On (Typ):
- 8Ohm
- Input Type:
- -
- Features:
- -
- Fault Protection:
- Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DSBGA
TSU8111YFPR FAQ
1.How can I place an order for TSU8111YFPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TSU8111YFPR 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 TSU8111YFPR reliable?
The price and inventory of TSU8111YFPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSU8111YFPR is usually 5 days.
3.What payment methods are accepted for TSU8111YFPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSU8111YFPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSU8111YFPR?
TSU8111YFPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSU8111YFPR 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 TSU8111YFPR?
For technical support, including TSU8111YFPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSU8111YFPR requirements.
6.How does Aetrix verify that TSU8111YFPR is sourced from the original manufacturer or authorized distributors?
All TSU8111YFPR 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 TSU8111YFPR meets industry standards.
7.What is the process for return or replacement of TSU8111YFPR?
All TSU8111YFPR units undergo pre-shipment inspection (PSI). If there is an issue with TSU8111YFPR, 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 TSU8111YFPR part is unused and in its original packaging.
Return procedure for TSU8111YFPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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