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AAT1171 Datasheet, PDF (10/22 Pages) Advanced Analogic Technologies – 600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch
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Typical Characteristics
DAC to Bypass Transient Response
(LL Mode; VIN = 4.2V; RL = 10Ω; COUT = 4.7µF; L = 2.2µH)
4.2V
VOUT
1V/div
0
VDAC
0.5V/div
0
0.6V
1.3V
0.2V
Time (25µs/div)
DATA SHEET
AAT1171
600mA Voltage-Scaling Step-Down Converter
for RF Power Amplifiers with Bypass Switch
VOUT
1V/div
0V
Enable
2V/div
0V
IIN
200mA/div
0A
Enable Soft Start
(VIN = 3.6V; VOUT = 1.8V; RL = 3.9Ω;
COUT = 4.7µF; L = 2.2µH)
1.8V
Time (20µs/div)
Load Transient Response
(VIN = 4.2V; VOUT = 3.3V; COUT = 4.7µF; L = 2.2µH)
VOUT
(AC coupled)
20mV/div
3.51V
3.26V
IOUT
200mA/div
525mA
250mA
Time (20µs/div)
Load Transient Response
(VIN = 3.6V; VOUT = 1.8V; COUT = 4.7µF; L = 2.2µH)
VOUT
(AC coupled)
20mV/div
1.914V
500mA
1.798V
IOUT
100mA/div
200mA
Time (20µs/div)
Line Transient Response
(VOUT = 1.5V; RL = 10Ω; COUT = 4.7µF; L = 2.2µH)
VIN
0.5V/div
3.6V
3.0V
VOUT
(AC coupled)
50mV/div
1.56V
1.44V
Time (50µs/div)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
10
201999B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 20, 2013
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