NCP361(2010) データシートの表示（PDF） - ON Semiconductor

部品番号

コンポーネント説明

メーカー

NCP361
(Rev.:2010)

USB Positive Overvoltage Protection Controller with Internal PMOS FET and Overcurrent Protection

ON Semiconductor 

NCP361

INPUT

OUTPUT

1 mF 25 V X5R 0603

3

IN

4

OUT 5

OUT

C2

C1

NCP361

1 EN FLAG 6

GND

2

FLAG Power

1 mF 25 V X5R 0603

FLAG

R1

1M

J2

2

1

Figure 1. Typical Application Circuit (UDFN Pinout)

FLAG_State

INPUT

EN

Thermal Shutdown

Soft Start

OUTPUT

(2 out pins in

UDFN package)

FLAGV

LDO

VREF

UVLO

OVLO

Figure 2. Functional Block Diagram

PIN FUNCTION DESCRIPTION (UDFN Package)

Pin No. Name

Type

Description

1

EN

INPUT Enable Pin. The device enters in shutdown mode when this pin is tied to a high level. In this case the

output is disconnected from the input. To allow normal functionality, the EN pin shall be connected to

GND or to a I/O pin. This pin does not have an impact on the fault detection.

2

GND POWER Ground

3

IN

POWER Input Voltage Pin. This pin is connected to the VBUS. A 1 mF low ESR ceramic capacitor, or larger,

must be connected between this pin and GND.

4, 5

OUT OUTPUT Output Voltage Pin. The output is disconnected from the VBUS power supply when the input voltage is

above OVLO threshold or below UVLO threshold. A 1 mF capacitor must be connected to these pins.

The two OUT pins must be hardwired to common supply.

6

FLAG OUTPUT Fault Indication Pin. This pin allows an external system to detect a fault on VBUS pin. The FLAG pin

goes low when input voltage exceeds OVLO threshold. Since the FLAG pin is open drain functionality,

an external pull up resistor to VCC must be added.

PIN FUNCTION DESCRIPTION (TSOP−5 Package)

Pin No. Name

Type

Description

1

IN

POWER Input Voltage Pin. This pin is connected to the VBUS. A 1 mF low ESR ceramic capacitor, or larger,

must be connected between this pin and GND.

2

GND POWER Ground

3

EN

INPUT Enable Pin. The device enters in shutdown mode when this pin is tied to a high level. In this case the

output is disconnected from the input. To allow normal functionality, the EN pin shall be connected to

GND or to a I/O pin. This pin does not have an impact on the fault detection.

4

FLAG OUTPUT Fault Indication Pin. This pin allows an external system to detect a fault on VBUS pin. The FLAG pin

goes low when input voltage exceeds OVLO threshold. Since the FLAG pin is open drain functionality,

an external pull up resistor to VCC must be added.

5

OUT OUTPUT Output Voltage Pin. The output is disconnected from the VBUS power supply when the input voltage is

above OVLO threshold or below UVLO threshold. A 1 mF capacitor must be connected to this pin.

NOTE: Pin out provided for concept purpose only and might change in the final product

http://onsemi.com

2

Share Link: