LND3526H Datasheet, PDF (1/1 Pages) Linear Dimensions Semiconductor – DUAL USB POWER CONTROL SWITCH

DATA SHEET
D
LND3526H/L-/CB
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: 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 LND3526H/L-CB provides additional
circuit breaker functionality if desired.
The LND3526 is available in active-high and active-
low versions in 8-pin die and SOIC packages.
OPERATING WAVEFORMS
FEATURES
• USB specification compliant
• 2.7 to 5.5V operating range
• 2 independent switches
• 140 mΩ maximum on-resistance
• Active-high or active-low ENABLE
versions
• Independent open drain fault flag pins
• 500mA continuous load
current per switch
• Thermal shutdown
• Reverse Blocking
• Soft Start
• Fault flag with deglitch filter
• Drop in replacement for
industry standard footprints
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
PINOUT
 Linear Dimensions Semiconductor Inc.  22620 Ricardo Rd, Cupertino CA 95014 USA  tel [phone]  fax [phone]  www.lineardimensions.com 