• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The TPD4S012 is a four-channel electrostatic discharge (ESD) solution for USB charger or USB on-the-go (OTG) interface. In many cell phone applications, the USB connector is the de facto communication port for external communications like high-speed data transfer, audio signal, charging, car-kit, etc. In order to support different interfaces, the USB port needs to handle different voltage levels. For example, some chargers require the V_BUS port of the USB connector to handle in excess of the normal V_BUS voltage per USB specifications. The TPD4S012 offers combinations of two different clamp voltages to match the voltage tolerances of the different signal interfaces using the common USB connector. Refer to Figure 5-6 & Figure 9-12, special snap back technology allows high-voltage tolerance during normal operation while reducing the clamp voltage during system level ESD stress.

特性

• Integrated ESD Clamps for D+, D–, V_BUS, and ID Pins to Provide
  Single-Chip ESD Protection for USB High Speed, USB-OTG, and
  USB Charger Interface
• Special Snap Back Technology Allows High-voltage Tolerance During
  Normal Operation while Reducing the Clamp Voltage during System
  Level ESD Stress
• USB Signal Pins (D+, D–, ID)
  • 0.8-pF Line Capacitance
  • Tolerates 6 V Signal
• V_BUS Line (V_BUS)
  • 11-pF Line Capacitance
  • Tolerates 20 V Signal
• Flow-Through Pin Mapping for the High-Speed Lines Ensures Zero
  Additional Skew Due to Board Layout While Placing the ESD
  Protection Chip Near the Connector
• Supports Data Rates in Excess of 480 Mbps
• IEC 61000-4-2 (Level 4) System Level ESD Compliance Measured
  at the D+, D–, and ID Pins
  • ±10-kV IEC 61000-4-2 Contact Discharge
  • ±10-kV IEC 61000-4-2 Air-Gap Discharge
• 3 Amps Peak Pulse Current (8/20 µs Pulse) for V_BUS and D+, D–, and ID Lines
• Industrial Temperature Range: –40°C to 85°C
• APPLICATIONS
  • Cellular Phones
  • Digital Cameras
  • Global Positioning Systems (GPS)
  • Portable Digital Assistants (PDA)