DATA SHEET
LND 3526
DUAL USB POWER CONTROL SWITCH
GENERAL DESCRIPTION
The LND3526, is a dual high side power control
switch, with independent enable and flag
functions optimized for self powered and bus-
powered universal serial bus (USB) applications.
The LND3526 satisfies the following USB
requirements: Each switch channel supplies up
to 500mA with internal circuitry limiting the fault
current to 750mA. The switch’s 140mΩ on-
resistance meets USB voltage drop
requirements. A flag output is available to
indicate fault conditions to the local USB
controller.
Additional features include: lockout (UVLO) to
ensure that the device remains off until there is a
valid input voltage present, thermal shutdown to
prevent switch failure from high current loads
and 3.3V and 5V logic compatible enable inputs.
The LND3526 is available in active-high and
active-low versions in 8-pin die and SOIC
packages.
FEATURES
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USB specification compliant
Over-Current Protection
2 independent switches
140 mΩ maximum on-resistance
Thermal shutdown
5µA Maximum standby supply current
2.4V typical under-voltage lockout
(UVLO)
3V to 5.5V input
Active-high or active-low ENABLE
versions
Independent open drain fault flag pins
500mA continuous load current per
switch
APPLICATIONS
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USB host and self powered hubs
USB bus-powered hubs
USB monitors, printers, cameras and
other USB controlled peripherals
Hot plug-in power supplies
Battery charger circuits
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Linear Dimensions, Inc.
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445 East Ohio Street, Chicago IL 60611 USA
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tel 312.321.1810
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fax 312.321.1830
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LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
