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NCP383 Datasheet, PDF (1/10 Pages) ON Semiconductor – Adjustable Current-Limiting Power-Distribution Switches | |||
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NCP383
Adjustable Current-Limiting
Power-Distribution
Switches
The NCP383 is a single input dual outputs powerâdistribution
switch designed for applications where heavy capacitive loads and
shortâcircuits are likely to be encountered, incorporating two very low
RDS(on), Nâchannel MOSFETs in a single package. Each channel of
the device limits the output current to a desired level by switching into
a constantâcurrent mode when the output load exceeds the
currentâlimit threshold or a short circuit is present. The currentâlimit
threshold is externally fixed by a pull down resistor placed between
Ilim and GND. The powerâswitches rise and fall times are controlled to
minimize current ringing during turn on/off.
An internal reverseâvoltage detection comparator disables the
powerâswitch if the output voltage is higher than the input voltage to
protect devices on the input side of the switches.
The /FLAGx logic output asserts low during overâcurrent,
reverseâvoltage or over temperature conditions. The switch is
controlled by a logic enable input active low.
Features
⢠2.7 V â 5.5 V Operating Range
⢠Current limit: Adjustable up to 2.8 A
⢠± 7.5% Current Limit Accuracy at 2.8 A
⢠Very fast OverâCurrent Detection Response: 2 ms (typ)
⢠1 mA Maximum Standby Supply Current
⢠Under Voltage Lockâout (UVLO)
⢠SoftâStart Prevents Inrush Current
⢠Thermal Protection
⢠Soft Turnâoff
⢠Reverse Voltage Protection
⢠Enable Active Low
⢠mDFN 3x3 mm
⢠Compliance to IEC61000â4â2 (Level 4)
8.0 kV (Contact) â 15 kV (Air)
⢠UL Listed â File E343275
⢠CB â IEC60950âED2 Certified
⢠CB â IEC60950âED2âAM1 Certified
⢠This is a PbâFree Device
Typical Applications
⢠Laptops
⢠USB Ports/Hubs
⢠TVs
http://onsemi.com
UDFN10
CASE 517CC
MARKING
DIAGRAM
383
ALYWG
G
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= PbâFree Package
(*Note: Microdot may be in either location)
PIN CONNECTIONS
GND 1
IN 2
IN 3
EN1 4
EN2 5
10 /FLAG1
9 OUT1
8 OUT2
7 ILIM
6 /FLAG2
(Top View)
Exposed pad must be soldered to PCB Ground plane.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
October, 2012 â Rev. 2
Publication Order Number:
NCP383/D
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