NCP373 Datasheet, PDF (1/10 Pages) ON Semiconductor – Load Switch Function

NCP373
Overvoltage Up to +30 V
and Down to -30 V with
Load Switch Function
NCP373 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, up to 400 mA or 1300 mA, depending on selected version.
Additional voltage protection is available, from VBUS to IN. Due to
built−in low R_DS(on) NMOS FET, the host system is protected against
positive and negative voltages up to ±28 V.
The embedded over−current and over−voltage protection allow the
device to sustain extreme conditions from short circuit on USB
connector, or defective WA or USB port.
Because to the NCP373 using internal NMOS, the system cost and
the PCB area of the application board are minimized.
NCP373 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 R_DS(on) NMOS Transistors
• Over−voltage Lockout (OVLO)
• Soft−start
• Real Shutdown Mode
• Alert FLAG Output
• Compliance to IEC61000−4−2 (Level 4)
8 kV (Contact)
15 kV (Air)
• ESD Ratings: Machine Model = B
Human Body Model = 2
• 12 Leads LLGA 3X3 mm Package
• These are Pb−Free Devices
Typical Applications
• USB ports
• Tablets
• Set Top Box
• Cell Phones
http://onsemi.com
MARKING
DIAGRAM
1
12 PIN LLGA
MU SUFFIX
CASE 513AK
XXXX
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
NCP373
(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 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
May, 2013 − Rev. 2
Publication Order Number:
NCP373/D