NCP374 반도체 회로 부품 판매점
Overvoltage Up to +30V and Down to -30V
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 ON Semiconductor |
NCP374
Overvoltage Up to +30 V
and Down to -30 V with
Load Switch Function
NCP374 is an over−voltage and over−current protection device.
From IN to VBUS , the part acts as a load switch protection, with
programmable current regulation. The current protection is externally
adjustable.
Additional voltage protection is available, from VBUS to IN. Due to
built−IN low RDS(on) NMOS fet, the host system is protected against
positive and negative voltage up to +28 V and down to −28 V.
The both embedded over−current and over−voltage protection
allows sustaining extreme conditions from short circuit on USB
connector, or defective WA or USB port.
Due to the NCP374 using internal NMOS, the system cost and the
PCB area of the application board are minimized.
NCP374 provides a negative going flag (FLAG) output, which
alerts the system that a fault has occurred.
Features
• Adjustable Over−Current
• Over−voltage Protection Up to 28 V and Down to −28 V
• Logic Pins EN and DIR
• Thermal Shutdown
• On−Chip Low RDS(on) NMOS Transistors
• Over−Voltage Lockout (OVLO)
• Soft Start.
• Real Shutdown Mode
• Alert FLAG Output.
• 12 Leads LLGA 4 x 4 mm Package
• This is a Pb−Free Device
Typical Applications
• USB Ports
• Tablets
• Set Top Box
• Cell Phones
http://onsemi.com
MARKING
DIAGRAM
1
TLLGA12
CASE 513AP
XXXXXX
XXXXXX
ALYWG
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
VBUS 1
VBUS 2
GND 3
RES1 4
RES2 5
RES3 6
NCP374
(Top View)
12 NC
11 IN
10 FLAG
9 DIR
8 EN
7 Ilim
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 10 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
May, 2012 − Rev. 0
1
Publication Order Number:
NCP374/D
Free Datasheet http://www.datasheet4u.com/
NCP374
POWER SUPPLY
4.7 mF
IN
1 mF
NCP374
IN
FLAG
DIR
EN
Ilim
VBUS
VBUS
GND
RES
RES
RES
1 mF
VBUS
D+
D−
GND
USB PORT
LDO 3.3 V
1 IN OUT 3
USB HOST CONTROLLER
STATUS
EN
USB TRANSCEIVER
SYS
SYSTEM
USB TRANSCEIVER
120 mF
5
2
3
4
VBUS(sense)
D+
D−
GND
CRTL[x:0]
DATA[x:0]
12
11
CRTL_IN[x:0] CRTL_OUT[x:0]
DATA_IN[x:0] DATA_OUT[x:0]
12
11
CRTL[x:0]
DATA[x:0]
VBUS(sense)
D+
D−
GND
5
2
3
4
Upstream USB Port
Figure 1. Typical Host Application Circuit
Downstream USB Port
VBUS
D+
D−
GND
USB PORT
VBUS
D+
D−
GND
USB PORT
VBUS
D+
D−
GND
Wall Adapter
D+ D+ PHY (Transceiver)
D− D−
Vbus
Ctr
LDO
Wall Adapter
1 mF1
NCP374
VVGRBBENUUSDSSFLDAIGIRN
RES EN
RES Ilim
Rlimit1
10k
/FLAG
/DIR
/EN
CCCV CHARGER
4.7 mF1
Ctr
/FLAG
/DIR
/REV
SYSTEM
GND
Figure 2. Typical Portable Application Circuit
LI+BATTERY
http://onsemi.com
2
Free Datasheet http://www.datasheet4u.com/
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( onsemi )
NCP374 data
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[ NCP374.PDF ]
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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