AAT1143 데이터 시트보기 (PDF) - Skyworks Solutions

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AAT1143

1MHz 400mA Step-Down Converter

Skyworks Solutions 

Typical Characteristics

Load Transient Response

(30mA to 300mA; VIN = 3.6V; VOUT = 1.8V; C1 = 4.7μF)

2.0

1.4

1.9

1.2

1.8

1.0

1.7

300mA

0.8

1.6

30mA

0.6

1.5

0.4

1.4

0.2

1.3

0.0

1.2

-0.2

Time (25μs/div)

Line Regulation

(VOUT = 1.8V)

0.1

0.05 IOUT = 100mA

0

-0.05

-0.1

-0.15

IOUT = 10mA

-0.2

-0.25

IOUT = 400mA

-0.3

-0.35

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Input Voltage (V)

DATA SHEET

AAT1143

1MHz 400mA Step-Down Converter

Line Transient

(VOUT = 1.8V @ 400mA)

1.90

7.0

1.85

6.5

1.80

6.0

1.75

5.5

1.70

5.0

1.65

4.5

1.60

4.0

1.55

3.5

1.50

3.0

Time (25μs/div)

Soft Start

(VIN = 3.6V; VOUT = 1.8V; 400mA)

4.0

3.5

3.0

3.0

2.0

2.5

1.0

2.0

0.0

1.5

-1.0

1.0

-2.0

0.5

-3.0

0.0

-4.0

-0.5

Time (250μs/div)

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

201983B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 25, 2013

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