© Semiconductor Components Industries, LLC, 2010

June, 2010 − Rev. 3

1

Publication Order Number:

NCP361/D

NCP361

USB Positive Overvoltage

Protection Controller with

Internal PMOS FET and

Overcurrent Protection

The NCP361 disconnects systems at its output when wrong VBUS

operating conditions are detected at its input. The system is positive

over−voltage 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 NCP361 is able to instantaneously disconnect the output from

the input if the input voltage exceeds the overvoltage threshold

(5.675 V). Thanks to an overcurrent protection, the integrated PMOS

is turning off when the charge current exceeds current limit (see

options in ordering information).

The NCP361 provides a negative going flag (FLAG) output, which

alerts the system that voltage, current or overtemperature faults have

occurred.

In addition, the device has ESD−protected input (15 kV Air) when

bypassed with a 1

mF or larger capacitor.

Features

8 kV (Contact)

15 kV (Air)

Applications

6 PIN UDFN

CASE 517AB

PIN CONNECTIONS

http://onsemi.com

MARKING

DIAGRAMS

(Top View)

IN

GND

FLAG

EN

OUT

Q

OUT

xx M

G

1

1

2

3

6

5

4

1

5

1

xxx AYWG

G

xxx

= Specific Device Code

M

= Date Code

A

= Assembly Location

Y

= Year

W

= Work Week

G

= Pb−Free Package

(Note: Microdot may be in either location)

TSOP−5

CASE 483

IN

GND

EN

OUT

FLAG

1

2

3

5

4

TSOP−5

UDFN

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 10 of this data sheet.