AAT2688IFK-AI-T1 datasheet(5/20 Pages) ANALOGICTECH

Part #	AAT2688IFK-AI-T1

Description	4.5A PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

Direct Link	http://www.analogictech.com

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AAT2688

4.5A PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters

SystemPower

TM

PRODUCT DATASHEET

2688.2008.06.1.0

5

www .analogictech.com

AAT2688

4.5A PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters

SystemPower

TM

PRODUCT DATASHEET

2688.2008.06.1.0

5

www .analogictech.com

Typical Characteristics–Channel 1

Step-Down Converter Efficiency vs. Output Current

(VOUT1 = 3.3V; L = 4.7µH)

Output Current (mA)

0.1

1

10

100

1000

10000

0

10

20

30

40

50

60

70

80

90

100

VIN1 = 6V

VIN1 = 8V

VIN1 = 12V

VIN1 = 18V

VIN1 = 24V

Step-Down Converter DC Regulation

(VOUT1 = 3.3V; L = 4.7µH)

Output Current (mA)

-2.0

-1.5

-0.5

-1.0

0.0

1.0

2.0

1.5

0.5

0.1

1

10

100

1000

10000

VIN1 = 6V

VIN1 = 8V

VIN1 = 12V

VIN1 = 18V

VIN1 = 24V

Step-Down Converter Output Voltage

Error vs. Input Voltage

(VOUT1 = 3.3V; L = 4.7µH)

Input Voltage (V)

6

8

10

12

14

16

18

20

22

24

-2

-1

0

1

2

IOUT1 = 0.10mA

IOUT1 = 100mA

IOUT1 = 1000mA

IOUT1 = 2250mA

IOUT1 = 3500mA

IOUT1 = 4500mA

Step-Down Converter Switching

Frequency vs. Temperature

(VIN1 = 12V; VOUT1 = 3.3V; IOUT1 = 4.5A)

Temperature (°C)

470

480

490

500

510

-40

-15

10

35

60

85

Step-Down Converter Switching Frequency

vs. Input Voltage

(VOUT1 = 3.3V; IOUT1 = 4.5A)

Input Voltage (V)

-3

-2

-1

0

1

2

3

6

8

10

12

14

16

18

20

22

24

No Load Step-Down Converter Input Current

vs. Input Voltage

(VEN1 = VIN1)

Input Voltage (V)

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

85°C

25°C

-40°C

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AAT2688IFK-AI-T1 Datasheet(PDF) 5 Page - Advanced Analogic Technologies

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