TPD3S014/44 Current Limit Switch

TPD3S014/44 Current Limit Switch

Texas Instruments' TPD3S014/44 are integrated devices that feature a current limited load switch and a two-channel Transient Voltage Suppressor (TVS) based Electrostatic Discharge (ESD) protection diode array for USB interfaces.

The TPD3S014/44 devices are intended for applications such as USB where heavy capacitive loads and short-circuits are likely to be encountered. TPD3S014/44’s provide short-circuit protection and over-current protection. They limit the output current to a safe level by operating in constant-current mode when the output load exceeds the current limit threshold. The fast overload response eases the burden on the main 5 V power supply by quickly regulating the power when the output is shorted. The rise and fall times for the current limit switch are controlled to minimize current surges when turning the device on and off.

Features  
  • Continuous current ratings of 0.5 A and 1.5 A
  • Fixed, constant-current limits of 0.85 A and 2.15 A (typ.)
  • Fast over-current response – 2 μs
  • Integrated output discharge
  • Product regulatory compliance
    • UL recognized component (UL 2367, standard for solid state over-current protectors)
    • CB file no. E169910 to IEC 60950-1, information technology equipment
  • Reverse current blocking
  • Short-circuit protection
  • Over-temperature protection with auto-restart
  • Built-in soft start
  • Ambient temperature range: –40°C to 85°C
  • IEC 61000-4-2 level 4 ESD protection (external pins)
    • ±12 kV contact discharge (IEC 61000-4-2)
    • ±15 kV air gap discharge (IEC 61000-4-2)
Manufacturer