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USB Power Distribution Switch
PRELIMINARY - February 18, 2000
SC5826
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
USB power distribution switches are high-side n-
channel MOSFET switches with built-in overcurrent
protection and low on-state resistance. The SC5826
switch is designed to meet the USB requirements for
power switching and maintenance-free fault protection
for self-powered & bus-powered hub applications. The
SC5826 features low on-state resistance to meet the
USB requirement for voltage drop and regulation. The
switch is controlled by an enable input that is
compatible with 3V and 5V logic. The enable input is
available with an active high or active low input for
maximum design flexibility. The device provides short
circuit current limiting at a value of less than 1.6A, 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 10擄C. The switch will
continue to cycle on and off until the fault is removed.
Inrush current limiting prevents the voltage drop on an
upstream port when the switch is enabled. An
undervoltage lockout circuit guarantees the switch is
initially off during start-up.
FEATURES
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Designed to meet
USB specification 1.1
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
Logic overcurrent output
Soft start circuit with slow turn-on time
APPLICATIONS
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Universal Serial Bus (USB) power management
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Self-powered or bus-powered USB hubs
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Root hubs in desktop PCs & servers
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Notebook PCs
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Peripherals
ORDERING INFORMATION
DEVICE
(1)
ENABLE
Active High
Active Low
PACKAGE
SO-8
SO-8
SC5826-1CS
SC5826-2CS
Note:
(1) Add suffix 鈥楾R鈥?for tape and reel.
PIN CONFIGURATION
BLOCK DIAGRAM
Top View
(8-Pin SOIC)
1
漏 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC5826-2CS相關型號PDF文件下載
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型號
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英文版
HotSwitch⑩ USB Power Distribution Switch
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英文版
HotSwitch⑩ USB Power Distribution Switch
SEMTECH [S...
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英文版
HotSwitch⑩ USB Power Distribution Switch
-
英文版
HotSwitch⑩ USB Power Distribution Switch
SEMTECH [S...
-
英文版
HotSwitch⑩ USB Power Distribution Switch
-
英文版
HotSwitch⑩ USB Power Distribution Switch
SEMTECH [S...
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英文版
Power Supply Support Circuit, Fixed, 2 Channel, PDSO8, SO-8
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