LND3526 查看數據表（PDF） - Linear Dimensions Semiconductor

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LND3526

DUAL USB POWER CONTROL SWITCH

Linear Dimensions Semiconductor 

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 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •

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