LND3526 Datasheet, PDF (1/7 Pages) Linear Dimensions Semiconductor – DUAL USB POWER CONTROL SWITCH

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
• 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
• 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
• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel [phone] • fax [phone] • www.lineardimensions.com •