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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

2.2μH

L1

4.7μF

C2

BYPASS

4.7μF

C1

1

2

3

32

1

12

3

ENABLE

DAC

VOUT

2

N/C

1

PGND

11

EN

7

BYPASS

8

VIN

10

VOUT

3

LX

12

MODE/SYNC

9

DAC

6

AGND

5

VCC

4

AAT1171-1/AAT1171-4

U1

GND

SYNC

R1

R2

GND

PWM

LL

On Off

On

Off

Figure 2: AAT1171-1/AAT1171-4 Evaluation Board Schematic.

4.7μH

L1

10μF

C2

BYPASS

4.7μF

C1

1

2

3

32

1

12

3

ENABLE

DAC

VOUT

2

N/C

1

PGND

11

EN

7

BYPASS

8

VIN

10

VOUT

3

LX

12

MODE/SYNC

9

DAC

6

AGND

5

VCC

4

AAT1171-5

U2

GND

SYNC

R1

R2

GND

PWM

LL

On Off

On

Off

Figure 3: AAT1171-5 Evaluation Board Schematic.