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LM3526M-L bảng dữ liệu(PDF) 1 Page - Texas Instruments

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tên linh kiện LM3526M-L
Giải thích chi tiết về linh kiện  LM3526 Dual Port USB Power Switch and Over-Current Protection
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LM3526
www.ti.com
SNVS054E – FEBRUARY 2000 – REVISED MARCH 2013
LM3526 Dual Port USB Power Switch and Over-Current Protection
Check for Samples: LM3526
1
FEATURES
DESCRIPTION
The LM3526 provides Universal Serial Bus standard
2
Compatible with USB1.1 and USB 2.0
power switch and over-current protection for all host
1 ms Fault Flag Delay Filters Hot-Plug Events
port applications. The dual port device is ideal for
Smooth Turn-on Eliminates In-rush Induced
Notebook and desktop PC's that supply power to
Voltage Drop
more than one port.
UL Recognized Component: REF# 205202
A 1 ms delay on the fault flag output prevents
erroneous overcurrent reporting caused by in-rush
1A Nominal Short Circuit Output Current
currents during hot-plug events.
Protects PC Power Supplies
Thermal Shutdown Protects Device in Direct
The dual stage thermal protection circuit in the
Short Condition
LM3526 provides individual protection to each switch
and the entire device. In a short-circuit/over-current
500mA Minimum Continuous Load Current
event, the switch dissipating excessive heat is turned
Small SOIC-8 package minimizes board space
off, allowing the second switch to continue to function
2.7V to 5.5V Input Voltage Range
uninterrupted.
140 m
Ω Max. Switch Resistance
The LM3526 accepts an input voltage between 2.7V
1 µA Max. Standby Current
and 5.5V allowing use as a device-based in-rush
current limiter for 3.3V USB peripherals, as well as
200 µA Max. Operating Current
Root and Self-Powered Hubs at 5.5V. The Enable
Under-voltage Lockout (UVLO)
inputs accept both 3.3V and 5.0V logic thresholds.
The small size, low RON, and 1 ms fault flag delay
APPLICATIONS
make the LM3526 a good choice for root hubs as well
Universal Serial Bus (USB) Root Hubs
as per-port power control in embedded and stand-
including Desktop and Notebook PC
alone hubs.
USB Monitor Hubs
Other Self-Powered USB Hub Devices
High Power USB Devices Requiring In-rush
Limiting
General Purpose High Side Switch
Applications
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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