USB3803CI-1-GL-TR

Desglose de sufijos

• CI: Industrial temperature grade (-40°C ~ +85°C)
• 1: Standard configuration variant
• GL: 25-ball WLCSP tiny bare-die package
• TR: Tape-and-reel automated SMT packaging (3000pcs per reel)

1. Arquitectura básica de un concentrador USB

• Port layout: 1 upstream USB port + 3 independent downstream USB 2.0 ports, fully USB-IF certified High-Speed (480 Mbps), Full-Speed (12 Mbps), Low-Speed (1.5 Mbps) compliant
• MultiTRAK™ Multi-TT design: Dedicated transaction translator per downstream port, eliminates bandwidth congestion for mixed-speed peripherals
• Proprietary port functions: PortSwap (DP/DM pin swap for simplified PCB routing), PHYBoost adjustable signal drive strength, PortMap port reordering
• Unique hardware bypass switch: Direct analog path connects upstream to one downstream port, disables hub logic for ultra-low-power single-port operation to save battery power

2. Battery Charging & Per-Port Power Control

• Fully compliant with USB BC1.1 battery charging specification: Supports SDP/CDP/DCP charging modes for mobile phones, tablets and portable gadgets
• VariSense™ current detection for automatic charging protocol identification without external resistors
• Per-port independent power gating, over-current thermal shutdown and short-circuit fault protection for every downstream channel
• Programmable current limit threshold for portable low-power designs

3. Low-Voltage & Ultra-Low-Power Design

• Wide single supply range: 1.6 V ~ 3.6 V, natively compatible with single-cell lithium battery systems (1.8 V / 3.3 V logic rails)
• Integrated internal 3.3 V and 1.2 V linear regulators; only single external supply input required
• Ultra-low standby current: Typical 1 μA when all ports suspended, critical for long battery life in wearable and wireless devices
• Multiple hierarchical power-saving modes: Active, Link Suspend, Global Suspend, Deep Power-Down

4. Configuration & Control Interfaces

• I²C two-wire serial slave port for dynamic register configuration via host MCU
• Default strap pin settings enable standalone operation without external EEPROM
• General open-drain interrupt pin to notify host of plug/unplug, fault or wake events
• Internal factory default configuration loaded at power-up if I²C host is unavailable

5. Reliability & ESD Protection

• All USB differential DP/DM pins support ±15 kV air / ±8 kV contact IEC 61000-4-2 ESD protection, eliminating extra external ESD components for compact PCBs
• Built-in watchdog timer for self-recovery from system lockup
• Internal POR power-on reset and undervoltage lockout to stabilize operation during battery voltage fluctuations

6. Electrical & Environmental Ratings

• Operating temperature (Industrial CI grade): -40°C to +85°C
• Typical active operating current: 31 mA full hub operation
• MSL 1 moisture sensitivity level, no dry-bag storage requirement before reflow
• Fully RoHS lead-free, halogen-free and REACH compliant

7. Package Specifications

• Package type: 25-ball ultra-small WLCSP (Wafer Level Chip Scale Package)
• Dimension: 1.95 mm × 1.95 mm tiny footprint, ideal for miniaturized wearables, IoT sensors and compact portable gadgets
• Standard tape-and-reel reel packaging (TR suffix) for high-volume automated SMT assembly

Aplicaciones típicas

• Wearable smart devices, wireless Bluetooth sensor nodes and compact IoT modules
• Portable power banks, mini USB charging hubs and mobile docking adapters
• Digital cameras, portable media players and handheld GPS navigation equipment
• Medical portable diagnostic instruments with multi-peripheral USB expansion
• Small single-board computers, embedded data loggers and miniature industrial test gear
• Bluetooth audio speakers, portable MIDI musical peripherals and compact consumer electronics
• Automotive rearview camera modules and in-car portable media expansion hubs