Electronic Components Datasheet Search
 ALLDATASHEET.COM Part #DescriptionMarking X

## TPS2070 Datasheet(PDF) 22 Page - Texas Instruments

 Part # TPS2070 Description FOUR-PORT USB HUB POWER CONTROLLERS Download 29 Pages Scroll/Zoom 100% Manufacturer TI [Texas Instruments] Direct Link http://www.ti.com Logo

## TPS2070 Datasheet(HTML) 22 Page - Texas Instruments

 22 / 29 pageTPS2070, TPS2071FOUR-PORT USB HUB POWER CONTROLLERSSLVS287A – SEPTEMBER 2000 – REVISED FEBRUARY 200122POST OFFICE BOX 655303• DALLAS, TEXAS 75265APPLICATION INFORMATIONpower dissipation and junction temperatureThe major source of power dissipation for the TPS2070 and TPS2071 comes from the internal voltage regulatorand the N-channel MOSFETs. Checking the power dissipation and junction temperature is always a gooddesign practice. Begin by determining the rDS(on) of the N-channel MOSFET according to the input voltage andoperating temperature. As an initial estimate, use the highest operating ambient temperature of interest andread rDS(on) from the graphs shown under the typical characteristics section of this data sheet. Using this value,the power dissipation per switch can be calculated by:PD + rDS(on)I2Multiply this number by four to get the total power dissipation coming from the N-channel MOSFETs.The power dissipation for the internal voltage regulator is calculated using:PD + VI(BP)–VO(min)IO(OUT)The total power dissipation for the device becomes:PD(total) + PD(voltage regulator) )4PD(switch)Finally, calculate the junction temperature:TJ + PDRqJA ) TAWhere:TA = ambient temperature °CRθJA = Thermal resistance °C/W, equal to inverting of derating factor found on the power dissipationtable in this data sheet.Compare the calculated junction temperature with the initial estimate. If they do not agree within a few degrees,repeat the calculation, using the calculated value as the new estimate. Two or three iterations are generallysufficient to get a reasonable answer.

## Similar Part No. - TPS2070

 Manufacturer Part # Datasheet Description Texas Instruments TPS2070 688Kb / 31P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS TPS2070DAP 416Kb / 25P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS TPS2070DAP 688Kb / 31P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS TPS2070DAP 591Kb / 27P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS TPS2070 688Kb / 31P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS
More results

## Similar Description - TPS2070

 Manufacturer Part # Datasheet Description Texas Instruments TPS2074 416Kb / 25P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS TPS2074 591Kb / 27P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS TPS2070 688Kb / 31P [Old version datasheet]   FOUR-PORT USB HUB POWER CONTROLLERS TUSB4041I-Q1 1Mb / 44P [Old version datasheet]   Four-Port USB 2.0 Hub TUSB8040A1 391Kb / 38P [Old version datasheet]   Four-Port USB 3.0 Hub TUSB8040 363Kb / 32P [Old version datasheet]   USB 3.0 Four Port Hub TUSB4041I 1Mb / 44P [Old version datasheet]   Four-Port USB 2.0 Hub TUSB8040_1110 414Kb / 33P [Old version datasheet]   USB 3.0 Four Port Hub TUSB8041 2Mb / 48P [Old version datasheet]   Four-Port USB 3.0 Hub TUSB8043 2Mb / 59P [Old version datasheet]   Four-Port USB 3.1 Gen1 Hub
More results