AT1361

1MHz,1A Synchronous Buck Converter

7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

1/11/2008

REV:1.0

7

Typical characteristics :

Vout Voltage vs. Temperature

2.45

2.46

2.47

2.48

2.49

2.5

2.51

2.52

2.53

2.54

2.55

-30 -20 -10

0

10

20

30

40

50

60

70

80

90

Temperature (

℃)

Vout Voltage vs. Temperature

3.25

3.26

3.27

3.28

3.29

3.3

3.31

3.32

3.33

3.34

3.35

-30 -20 -10

0

10

20

30

40

50

60

70

80

90

Temperature (

℃)

Load=0.8A

Load=1A

Efficiency VS. Load Current

10

20

30

40

50

60

70

80

90

100

10

100

1000

Load Current(mA)

VIN=2.5V,VOUT=1.2V

VIN=3.6V,VOUT=1.2V

VIN=4.2V,VOUT=1.2V

VIN=5V,VOUT=1.2V

L=4.7uH/SR0302

Efficiency VS. Load Current

10

20

30

40

50

60

70

80

90

100

10

100

1000

Load C urre nt(mA)

VIN=3.6V,VOUT=3.3V

VIN=4.2V,VOUT=3.3V

VIN=5V,VOUT=3.3V

L=4.7uH/SR0302

Efficiency VS. Load Current

10

20

30

40

50

60

70

80

90

100

10

100

1000

Load Current(mA)

VOUT=1.2V

VOUT=1.8V

VOUT=2.5V

VOUT=3.3V

L=4.7uH/SR0302