SD3112-4R7-R datasheet(9/22 Pages) SKYWORKS

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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

Typical Characteristics

Light Load Switching Waveform

(PWM Mode; VIN = 4.2V; VOUT = 0.6V; RL = 10

Ω;

COUT = 4.7µF; L = 2.2µH)

Time (200ns/div)

VOUT

(AC coupled)

20mV/div

100mA/div

VLX

2V/div

Light Load Switching Waveform

(LL Mode; VIN = 4.2V; VOUT = 0.6V; RL = 10

Ω;

COUT = 4.7µF; L = 2.2µH)

Time (1µs/div)

VOUT

(AC coupled)

20mV/div

200mA/div

VLX

2V/div

DAC Transient Response in PWM Mode

(VIN = 3.6V; RL = 10

Ω; C

OUT = 4.7µF; L = 2.2µH)

Time (25µs/div)

VOUT

1V/div

VDAC

0.5V/div

3.3V

0.6V

1.2V

0.2V

DAC Transient Response in LL Mode

(VIN = 3.6V; RL = 10

Ω; C

OUT = 4.7µF; L = 2.2µH)

Time (25µs/div)

VOUT

1V/div

VDAC

0.5V/div

3.3V

0.6V

1.2V

0.2V

Bypass Transient Response

(PWM Mode; VIN = 3.6V; RL = 10

Ω; C

OUT = 4.7µF; L = 2.2µH)

Time (25µs/div)

VOUT

1V/div

VBYP

1V/div

3.5V

0.6V

Bypass Transient Response

(LL Mode; VIN = 3.6V; RL = 10

Ω; C

OUT = 4.7µF; L = 2.2µH)

Time (25µs/div)

VOUT

1V/div

VBYP

1V/div

3.5V

0.6V

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