NCP361 Series

Overvoltage Protection Circuit, USB Positive, with Internal PMOS FET and Overcurrent Protection

Catalog

Overvoltage Protection Circuit, USB Positive, with Internal PMOS FET and Overcurrent Protection

Part	Mounting Type	Supplier Device Package	Technology	Number of Circuits	Package / Case	Applications
ON Semiconductor NCP361SNT1G	Surface Mount	5-TSOP	Mixed Technology	1	SOT-23-5 Thin TSOT-23-5	General Purpose

Catalog

Overvoltage Protection Circuit, USB Positive, with Internal PMOS FET and Overcurrent Protection

Key Features

• Very Fast Protection, Up to 20 V, with 25 µA Current Consumption

• On-chip PMOS Transistor

• Overvoltage Lockout (OVLO)

• Undervoltage Lockout (UVLO)

• Overcurrent Protection.

• Alert FLAG Output

• EN Enable Pin

• Thermal Shutdown

• 6-Lead UDFN 2 x 2 mm Package

• TSOP-5 3 x 3 mm Package

• These are Pb-Free Devices

Description

NCP361 is able to disconnect the system from its output pin in case wrong VBUS operating conditions are detected. The system is positive overvoltage protected up to +20 V. Thanks to the integrated PMOS FET, no external device is necessary, reducing the system cost and the PCB area of the application board. NCP361 is able to instantaneously disconnect the output from the input if the input voltage exceeds the overvoltage threshold (OVLO).Thanks to an overcurrent protection, the integrated PMOS is turning off when the charge current exceeds current limit (see options in ordering information). NCP361 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 1.0 µF or larger capacitor.