AAT1157IVN-T1 datasheet(5/14 Pages) ANALOGICTECH

Part #	AAT1157IVN-T1

Description	1MHz 1.2A Buck DC/DC Converter

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

Direct Link	http://www.analogictech.com

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5 / 14 page

AAT1157

1MHz 1.2A Buck DC/DC Converter

1157.2005.11.1.4

5

Typical Characteristics

Frequency vs. Input Voltage

(VOUT = 1.8V)

Input Voltage (V)

1.2

1.22

1.24

1.26

1.28

1.3

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

Output Voltage vs. Temperature

(VIN = 3.6V; VOUT = 2.5V; IOUT = 1.0A)

Temperature (

°°C)

-0.7

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

-40

-20

0

20

40

60

80

100

N-Channel R

DSON vs. Input Voltage

Input Voltage (V)

0

20

40

60

80

100

120

140

160

180

200

2.5

3

3.5

4

4.5

5

5.5

120

°C

100

°C

25

°C

85

°C

P-Channel R

DSON vs. Input Voltage

Input Voltage (V)

0

20

40

60

80

100

120

140

160

180

200

2.5

3

4

3.5

4.5

5

5.5

120

°C

100

°C

25

°C

85

°C

DC Regulation

(VOUT = 2.5V)

Output Current (mA)

-4.0

-3.0

-2.0

-1.0

0.0

1.0

2.0

1

10

100

1000

10000

VIN = 3.0V

VIN = 3.3V

VIN = 3.6V

No Load Supply Current vs. Input Voltage

Input Voltage (V)

0

50

100

150

200

250

300

2.5

3

4

3.5

4.5

5.5

5

-40

°C

25

°C

85

°C

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