AAT3183(2007) データシートの表示（PDF） - Advanced Analogic Technologies

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AAT3183
(Rev.:2007)

300mA Inductorless Step-Down Converter

Advanced Analogic Technologies 

AAT3183

300mA Inductorless Step-Down Converter

Typical Characteristics

Output Voltage Ripple vs. Input Voltage

(CIN/CFLY = 1µF; COUT = 4.7µF; IOUT = 300mA)

100

90

80

No Post Filter

70

60

50

40

30

20

100pF Post Filter

10

0

3

3.6

4.2

4.8

5.4

6

Input Voltage (V)

Output Impedance vs. Input Voltage

1.8

25°C

1.5

85°C

1.2

0.9

-40°C

0.6

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

Input Voltage (V)

Load Transient Response

(VIN = 3.6V; VOUT = 1.5V; IOUT = 5mA to 150mA)

Line Transient

(VIN = 3.6V to 4.2V)

1.54

0.7

1.51

6.9

1.52

0.6

1.505

6.4

1.5

0.5

1.5

5.9

1.48

0.4

1.495

5.4

1.46

0.3

1.49

4.9

1.44

0.2

1.485

4.4

1.42

0.1

1.48

3.9

1.4

0

1.475

3.4

1.38

-0.1

1.47

2.9

Time (50µs/div)

Time (500µs/div)

Output Ripple

(VOUT = 1.5V; IOUT = 300mA)

1.54

1.53

1.52

1.51

1.5

1.49

1.48

1.47

1.46

Time (500ns/div)

Output Ripple

(VOUT = 1.5V; IOUT = 150mA)

1.54

1.53

1.52

1.51

1.5

1.49

1.48

1.47

1.46

Time (500ns/div)

6

3183.2007.07.1.2

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