AAT1147IJS-0.6-T1 データシートの表示（PDF） - Analog Technology Inc

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AAT1147IJS-0.6-T1

High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter

Analog Technology Inc 

AAT1147

High Efficiency, Low Noise, Fast Transient

400mA Step-Down Converter

Typical Characteristics

No-Load Quiescent Current

vs. Input Voltage

220

210

200

25°C

190

85°C

180

170

160

150

-40°C

140

130

120

2.5

3.0

3.5

4.0

4.5

5.0

5.5

Input Voltage (V)

Line Transient Response

(40mA to 400mA; VIN = 3.6V; VOUT = 1.8V;

C1 = 4.7µF; CFF = 100pF)

2.0

1.4

1.9

1.2

1.8

1.0

1.7

0.8

1.6

0.6

1.5

0.4

1.4

0.2

1.3

400 mA

0.0

1.2

-0.2

40 mA

1.1

-0.4

1.0

-0.6

Time (25µs/div)

Line Transient Response

(40mA to 400mA; VIN = 3.6V;

VOUT = 1.8V; C1 = 4.7µF)

2.0

1.4

1.9

1.2

1.8

1.0

1.7

0.8

1.6

0.6

1.5

0.4

1.4

0.2

1.3

400mA

0.0

1.2

-0.2

40mA

1.1

-0.4

1.0

-0.6

Time (25µs/div)

Soft Start

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

5.6

3.6

4.8

3.2

4.0

2.8

3.2

2.4

2.4

2.0

1.6

1.6

0.8

1.2

0.0

0.8

-0.8

0.4

-1.6

0.0

-2.4

-0.4

Time (25µs/div)

Line Response

(VOUT = 1.8V @ 400mA)

1.90

5.2

1.85

5.0

1.80

4.8

1.75

4.6

1.70

4.4

1.65

4.2

1.60

4.0

1.55

3.8

1.50

3.6

1.45

3.4

1.40

3.2

Time (25µs/div)

Output Ripple

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

40

0.9

20

0.8

0

0.7

-20

0.6

-40

0.5

-60

0.4

-80

0.3

-100

0.2

-120

0.1

Time (500ns/div)

1147.2006.05.1.0

7

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