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.
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
OPERATING WAVEFORMS
PINOUT
Linear Dimensions Semiconductor Inc.
22620 Ricardo Rd, Cupertino CA 95014 USA
tel 312.321.1810
fax 312.321.1830
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
