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SD3112-4R7-R Datasheet(PDF) 19 Page - Skyworks Solutions Inc.

Part # SD3112-4R7-R
Description  600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch
PDF  22 Pages
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Manufacturer  SKYWORKS [Skyworks Solutions Inc.]
Direct Link  http://www.skyworksinc.com
Logo SKYWORKS - Skyworks Solutions Inc.

SD3112-4R7-R Datasheet(HTML) 19 Page - Skyworks Solutions Inc.

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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201999B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013
AAT1171
600mA Voltage-Scaling Step-Down Converter
for RF Power Amplifiers with Bypass Switch
DATA SHEET
AAT1171 Losses
PTOTAL
= 0.62 · 0.29
Ω + (5ns · 2.0MHz · 0.6A + 60µA) · 4.2V = 104mW
= IO2 · RDS(ON) + (tsw · FS · IO + IQ) · VIN
TJ(MAX) = PTOTAL · ΘJA + TAMB = 104mW · 50°C/W = 5.2°C + 70°C = 75.2°C
AAT1171 Dropout Losses
PTOTAL
= 0.62 · 310m
Ω + 100µA · 3.5V = 112mW
= IO2 · RDS(ON)(HS) + IQ · VIN
TJ(MAX) = PTOTAL · ΘJA + TAMB = 112mW · 50°C/W = 5.6°C + 70°C = 75.6°C



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