Fujitsu MB3845, MB3842 manual Application Example

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MB3842/MB3845

■APPLICATION EXAMPLE

(1) Dual-Port Self-Powered Hub Application (NON-GANG Mode Connection)

USB 5 V Controller

Overcurrent

ON/OFF

Power Supply

5 V

MB3842/MB3845
EN1,EN1	GND
SS1	OC1
CS1	OUT1
VIN1	OUT1
	USB
	Port 1
VIN1	OUT1
VIN2	OUT2
	USB
	Port 2
VIN2	OUT2
CS2	OUT2
SS2	OC2
EN2,EN2	GND

*The MB3842 can also be adapted for use with 3.3V controllers.

USB Port 500mA MAX Par Port

Smoothing capacitors should be placed between VIN and GND, or between OUT and GND as required.

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Contents Features DescriptionPackage PIN Assignment MB3842/MB3845PIN Description Pin no Symbol DescriptionsBlock Diagram for 1 channel Recommended Operating Conditions Absolute Maximum RatingsElectrical Characteristics per 1 ch Diagram Normal operationAt V in fall At overcurrent detection At over-temperature occurrenceTypical Characteristics Rlim vs. limit current characteristicsCSS vs. TON SS characteristics MB3842/MB3845 SW resistance vs. temperature characteristicsOutput power ISW saturation characteristics Power derating characteristics Functional Description Typical Application Application Example Dual-Port Bus Powered Hub Application Gang Mode Connection Ordering Information Usage PrecautionPackage Dimension Fujitsu Limited