4-Channel ESD Solution for USB-HS/ USB OTG/ USB Charger Interface

The TPD4S012 is a four-channel electrostatic discharge (ESD) solution for USB charger or USB on-the-go interface.

Product Information

	TPD4S012
Number of Channels	4
IEC 61000-4-2 Contact (kV)	+/-8
IEC 61000-4-2 Air-Gap (kV)	+/-11
IO Capacitance (Typ) (pF)	0.9
Breakdown Voltage (Min) (V)	7
IO Leakage Current (nA)	10
Operating Temp Range (Celsius)	-40 to 85

Features

• 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
• VBUS Line (VBUS)
  • 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 VBUS 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)

Description

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 VBUS 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. Special snap back technology allows high-voltage tolerance during normal operation while reducing the clamp voltage during system level ESD stress.