SD3112-4R7-R datasheet(19/22 Pages) SKYWORKS

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

부품명	SD3112-4R7-R

상세설명	600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch

PDF	22 Pages

Scroll/Zoom	100%

제조업체	SKYWORKS [Skyworks Solutions Inc.]

홈페이지	http://www.skyworksinc.com

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19 / 22 page

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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