SD3112-4R7-R datasheet(8/22 Pages) SKYWORKS

tên linh kiện	SD3112-4R7-R

Giải thích chi tiết về linh kiện	600mA Voltage-Scaling Step-Down Converter for RF Power Amplifiers with Bypass Switch

PDF	22 Pages

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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

P-Channel R

DS(ON) vs. Input Voltage

Input Voltage (V)

2.7

3.1

3.5

3.9

4.5

4.9

5.5

2.9

3.3

3.7

4.1 4.3

4.7

5.1 5.3

100

150

200

250

300

350

400

TJ = 120°C

TJ = 85°C

TJ = 25°C

Bypass R

DS(ON) vs. Input Voltage

Input Voltage (V)

100

120

140

2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5

TJ = 25°C

TJ = 85°C

TJ = 120°C

Switching Frequency vs. Temperature

(VIN = 3.6V; VOUT = 1.8V; RL = 10)

Temperature (

°°C)

1.90

1.92

1.94

1.96

1.98

2.00

2.02

2.04

2.06

-40.0

-20.0

0.0

20.0

40.0

60.0

80.0

PWM

Output Voltage vs. DAC Voltage

(VIN = 4.2V; LL Mode)

DAC Voltage (V)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

0.2

0.4

0.6

0.8

1.0

1.2

1.4

25°C

85°C

-40°C

Heavy Load Switching Waveform

(VIN = 3.6V; VOUT = 1.8V; RL = 3

Ω; C

OUT = 4.7µF; L = 2.2µH)

Time (200ns/div)

VOUT

(AC coupled)

20mV/div

200mA/div

VLX

2V/div

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