MAX15108A データシートの表示（PDF） - Maxim Integrated

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MAX15108A

High-Efficiency, 8A, Current-Mode Synchronous Step-Down Switching Regulator

Maxim Integrated 

MAX15108A

High-Efficiency, 8A, Current-Mode

Synchronous Step-Down Switching Regulator

Typical Operating Characteristics

(Circuit of Typical Application Circuit, TA = +25°C, unless otherwise noted.)

EFFICIENCY vs. OUTPUT CURRENT

(VIN = 5V, PWM MODE)

100

90

80

VOUT = 2.5V VOUT = 3.3V

70

VOUT = 1.8V

60

50

VOUT = 0.9V

40

VOUT = 1.2V

30

20 VOUT = 1.5V

10

0

012345678

OUTPUT CURRENT (A)

EFFICIENCY vs. OUTPUT CURRENT

(VIN = 3.3V, PWM MODE)

100

90

80

VOUT = 1.8V VOUT = 2.5V

70

VOUT = 1.5V

60

50

VOUT = 0.9V

40 VOUT = 1.2V

30

20

10

0

012345678

OUTPUT CURRENT (A)

SWITCHING FREQUENCY

vs. INPUT VOLTAGE

1080

1070

1060

1050

1040

1030

1020

1010

1000

990

980

2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5

INPUT VOLTAGE (V)

OUTPUT VOLTAGE vs. SUPPLY VOLTAGE

(PWM MODE, VOUT = 1.5V)

1.520

1.515

1.510

1.505

ILOAD = 2A

1.500

1.495

1.490

ILOAD = 8A

1.485

1.480

2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5

SUPPLY VOLTAGE (V)

OUTPUT VOLTAGE ERROR %

vs. SUPPLY VOLTAGE

0.5

NORMALIZED AT VIN = 3.3V

0.4

0.3

VOUT = 2.5V

VOUT = 1.2V

0.2

0.1

0

-0.1

VOUT = 0.9V

-0.2

-0.3

VOUT = 1.5V

-0.4

-0.5

2.7

VOUT = 1.8V

ILOAD = 8A

3.1 3.5 3.9 4.3 4.7 5.1 5.5

SUPPLY VOLTAGE (V)

OUTPUT VOLTAGE vs. OUTPUT CURRENT

(PWM MODE, VOUT = 1.5V)

1.53

1.52

VIN = 5V

1.51

1.50

VIN = 3.3V

1.49

1.48

1.47

0

12345678

OUTPUT CURRENT (A)

LOAD-TRANSIENT RESPONSE

(VIN = 5V, VOUT = 1.5V)

MAX15108A toc07

40µs/div

VOUT

50mV/div

AC-COUPLED

8A

ILOAD

2A/div

4A

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