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SC2041 Datasheet(PDF) 1 Page - Semtech Corporation

No. de pieza SC2041
Descripción Electrónicos  HotSwitch??USB Power Distribution Switch With Shutdown
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Fabricante Electrónico  SEMTECH [Semtech Corporation]
Página de inicio  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC2041 Datasheet(HTML) 1 Page - Semtech Corporation

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SC2041
© 2000 SEMTECH CORP.
HotSwitch™ USB Power Distribution
Switch With Shutdown
July 18, 2000
652 MITCHELL ROAD NEWBURY PARK CA 91320
1
DESCRIPTION
USB
power
distribution
switches
are
high-side
N-channel MOSFET switches with built-in overcurrent
protection and low on-state resistance. The SC2041
switch is designed to meet the USB requirements for
power switching and maintenance-free fault protection
for self-powered & bus-powered hub applications. The
SC2041 features low on-state resistance to meet the
USB requirement for voltage drop and regulation. The
switch is controlled by a shutdown input that is
compatible with 3V and 5V logic. The device is active
when the shutdown input is low. See SC2051 for an
active high version. The device provides short circuit
current limiting at a value of less than 1.0A, well below
the USB limit of 5A. During an overcurrent condition the
device provides a fault notification to signal the USB
controller. An integrated thermal protection circuit
automatically shuts the switch off when the junction
temperature reaches its thermal limit. The switch
remains off until the junction temperature drops
approximately 20°C. The switch will continue to cycle
on and off until the fault is removed. Inrush current
limiting prevents voltage drop on an upstream port
when the switch is enabled. An undervoltage lockout
circuit guarantees the switch is initially off during
start-up.
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
ORDERING INFORMATION
Note:
(1) Only available in tape and reel packaging. A reel
contains 2500 devices.
DEVICE
(1)
PACKAGE
SC2041IS.TR
SO-8
FEATURES
•= Designed to meet USB specification revisions 1.1
and 2.0 power management requirements
•= 500mA continuous load current
•= High-side MOSFET switch with low R
DS(ON)
•= Short-circuit current protection
•= Internal thermal shutdown
•= Undervoltage lockout
•= Open drain fault output
•= Soft start circuit with slow turn-on time
•= Wide supply voltage range: 2.8V to 5.5V
•= 2.5kV ESD rating (Human Body Model)
•= Full industrial temperature range
APPLICATIONS
•= Universal Serial Bus (USB) power management
•= Self-powered or bus-powered USB hubs
•= Root hubs in desktop PCs & servers
•= Notebook PCs
•= Peripherals
TYPICAL APPLICATION CIRCUIT
VBUS IN
Flag Output To USB Controller
VBUS OUT
Shutdown Signal From USB Controller
U1
SC2041
1
2
3
4
5
6
7
8
GND
IN
IN
SHDN
FLG
OUT
OUT
OUT
C2
0.1uF
C3
22uF
R1
C1
0.1uF


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