NCP361 데이터 시트보기 (PDF) - ON Semiconductor
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NCP361 Datasheet PDF : 13 Pages
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NCP361, NCV361
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
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