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| AAT1171 Datasheet, PDF (9/22 Pages) Advanced Analogic Technologies – 600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch | |||
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Typical Characteristics
Light Load Switching Waveform
(PWM Mode; VIN = 4.2V; VOUT = 0.6V; RL = 10Ω;
COUT = 4.7µF; L = 2.2µH)
VOUT
(AC coupled)
20mV/div
IL
100mA/div
0
VLX
2V/div
0
Time (200ns/div)
DATA SHEET
AAT1171
600mA Voltage-Scaling Step-Down Converter
for RF Power Amplifiers with Bypass Switch
Light Load Switching Waveform
(LL Mode; VIN = 4.2V; VOUT = 0.6V; RL = 10Ω;
COUT = 4.7µF; L = 2.2µH)
VOUT
(AC coupled)
20mV/div
IL
200mA/div
0
VLX
2V/div
0
Time (1µs/div)
DAC Transient Response in PWM Mode
(VIN = 3.6V; RL = 10Ω; COUT = 4.7µF; L = 2.2µH)
VOUT
3.3V
1V/div
0
VDAC
0.5V/div
0
0.6V
1.2V
0.2V
Time (25µs/div)
DAC Transient Response in LL Mode
(VIN = 3.6V; RL = 10Ω; COUT = 4.7µF; L = 2.2µH)
VOUT
3.3V
1V/div
0
VDAC
0.5V/div
0
1.2V
0.2V
0.6V
Time (25µs/div)
Bypass Transient Response
(PWM Mode; VIN = 3.6V; RL = 10Ω; COUT = 4.7µF; L = 2.2µH)
3.5V
VOUT
1V/div
0.6V
0
VBYP
1V/div
0
Time (25µs/div)
Bypass Transient Response
(LL Mode; VIN = 3.6V; RL = 10Ω; COUT = 4.7µF; L = 2.2µH)
3.5V
VOUT
1V/div
0.6V
0
VBYP
1V/div
0
Time (25µs/div)
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
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