onsemi | NCP360SNT1G

The NCP360 disconnects systems at its output when wrong VBUS operating conditions are detected at its input. The system is positive overvoltage protected up to +20 V. Thanks to an integrated PMOS FET, no external device is necessary, reducing the system cost and the PCB area of the application board.

The NCP360 is able to instantaneously disconnect the output from the input if the input voltage exceeds the overvoltage threshold (OVLO). The NCP360 provides a negative going flag (FLAG) output, which alerts the system that a fault has occurred. In addition, the device has ESD−protected input (15 kV Air) when bypassed with a 1 µF or larger capacitor.

Key Features:

• Very Fast Protection, Up to 20 V, with 25 µA Current Consumption
• On−chip PMOS Transistor
• Overvoltage Lockout (OVLO)
• Undervoltage Lockout (UVLO)
• Alert FLAG Output
• EN Enable Pin
• Thermal Shutdown
• Compliance to IEC61000−4−2 (Level 4) 8 kV (Contact) 15 kV (Air)
• ESD Ratings
  • Machine Model = B
  • Human Body Model = 2
• 6 Lead UDFN 2x2 mm Package
• 5 Lead TSOP 3x3 mm Package
• These are Pb−Free Devices

Benefits:

• When wall adapter or AC-DC overvoltage appears, the internal pass element is turned off very fast in order to protect the downstream system. The current consumption is around 25 µA although the very fast turn off capability.
• No external device is necessary
• Typical OVLO is set to 5.675 V. Additional threshold can be manufactured.
• Typical UVLO is set to 3.0 V. Additional thresholds can be manufactured.
• The microcontroller can take into account Flag status and controls thanks to EN pin the pass element state.
• The OVP device can be forced to off state thanks to this pin.
• When internal junction temperature is exceeded, the pass element is turned off.
• Very small package, small thickness.
• Low cost version

Applications

• USB Devices
• Mobile Phones
• Peripheral
• Personal Digital Applications
• MP3 Players