AAT1171 Datasheet, PDF (16/22 Pages) Advanced Analogic Technologies – 600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch

DATA SHEET
AAT1171
600mA Voltage-Scaling Step-Down Converter
for RF Power Amplifiers with Bypass Switch
GND
U1
AAT1171-1/AAT1171-4
1
N/C
12
LX
2
VOUT
11
PGND
3
VOUT
10
VIN
4
VCC
9
MODE/SYNC
5
AGND
8
BYPASS
6
DAC
7
EN
L1
2.2μH
C1
4.7μF
VOUT
C2
4.7μF
GND
VIN
DAC ^R1
R2
123
321
123
ENABLE BYPASS SYNC
Off On On Off LL PWM
Figure 2: AAT1171-1/AAT1171-4 Evaluation Board Schematic.
GND
U2
AAT1171-5
1
N/C
12
LX
2
VOUT
11
PGND
3
VOUT
10
VIN
4
VCC
9
MODE/SYNC
5
AGND
8
BYPASS
6
DAC
7
EN
L1
4.7μH
C1
4.7μF
VOUT
C2
10μF
GND
VIN
DAC ^R1
R2
123
321
123
ENABLE BYPASS SYNC
Off On On Off LL PWM
Figure 3: AAT1171-5 Evaluation Board Schematic.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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201999B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013