AAT2689IRN-AI-T1 datasheet(5/20 Pages) SKYWORKS

Part #	AAT2689IRN-AI-T1

Description	Independent Enable Pins

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Manufacturer	SKYWORKS [Skyworks Solutions Inc.]

Direct Link	http://www.skyworksinc.com

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5

AAT2689

PMIC Solution for 12V Adapter Systems

with 2-Output High Performance Step-Down Converters

DATA SHEET

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

202035A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012

Typical Characteristics

Step-Down Converter Efficiency vs. Load

(VOUT1 = 3.3V; L = 4.7µH)

Output Current (mA)

0

10

20

30

40

50

60

70

80

90

100

0.1

1

10

100

1000

10000

VIN1 = 6V

VIN1 = 8V

VIN1 = 12V

VIN1 = 18V

VIN1 = 24V

Step-Down Converter DC Regulation

(VOUT1 = 3.3V; L = 4.7µH)

Output Current (mA)

0.1

1

10

100

1000

10000

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

2.0

VIN1 = 6V

VIN1 = 8V

VIN1 = 12V

VIN1 = 18V

VIN1 = 24V

Step-Down Converter Line Regulation

(VOUT1 = 3.3V; L = 4.7µH)

Input Voltage (V)

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

0.75

1.00

6

8

10

12

14

16

18

20

22

24

IOUT1 = 0.1mA

IOUT1 = 1mA

IOUT1 = 1250mA

IOUT1 = 2500mA

Step-Down Converter Output Ripple

(VIN1 = 12V; VOUT1 = 3.3V; IOUT1 = 1mA)

Time (2µs/div)

3.29

3.30

3.31

0.0

0.2

0.4

0V

12V

Step-Down Converter Output Ripple

(VIN1 = 12V; VOUT1 = 3.3V; IOUT1 = 2.5A)

Time (1µs/div)

3.28

3.30

3.32

2.0

3.0

4.0

0V

12V

Step-Down Converter Load Transient Response

(IOUT1 = 1.875A to 2.5A; VIN1 = 12V;

VOUT1 = 3.3V; COUT1 = 2x22µF)

Time (100µs/div)

3.2

3.3

3.4

1.5

2.0

2.5

3.0

2.5A

1.875A

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