MP2159 – 1A, 6V, 1.5MHz SYNCHRONOUS STEP-DOWN SWITCHER

MP2159 Rev. 1.05

www.MonolithicPower.com

4

6/4/2020

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TYPICAL PERFORMANCE CHARACTERISTICS

VIN = 5V, VOUT = 1.2V, L = 1.0µH, TA = +25ºC, unless otherwise noted.

0

0.5

0.75

0.25

1

Quiescent Current vs.

Input Voltage

Shutdown Current vs.

Input Voltage

Load Regulation

Line Regulation

Case Temp Rise

Vin=3/5V, Vo=1.2V

Case Temp Rise

Vin=5V, Vo=3.3V

Efficiency

0

10

20

30

40

2 2.5 3 3.5 4 4.5 5 5.5 6

INPUT VOLTAGE (V)

INPUT VOLTAGE (V)

-2.00%

-1.50%

-1.00%

-0.50%

0.00%

0.50%

1.00%

1.50%

2.00%

0

0.5

1

1.5

LOAD CURRENT (A)

Vin=5V

Vin=6V

Vin=3V

Vin=5V

-1.00%

-0.80%

-0.60%

-0.40%

-0.20%

0.00%

0.20%

0.40%

0.60%

0.80%

1.00%

23456

INPUT VOLTAGE (V)

Load=1A

Load=0A

0

1

10

5

4

3

2

9

8

7

6

00.5

0.25

0.75

1

0

1

10

5

4

3

2

9

8

7

6

00.5

0.25

0.75

1

OUTPUT CURRENT (A)

OUTPUT CURRENT (A)

50

55

60

65

70

75

80

85

90

95

100

1

10

100

1000

LOAD CURRENT(mA)

Vin=3.3V

Vin=5V

Vin=6V

IOUT (A)

Efficiency

5/3.3VIN to 1.8VOUT

Efficiency

5VIN to 3.3VOUT

IOUT (A)

50

60

70

80

90

100

VIN=5V

VIN=3.3V

50

60

70

80

90

100

0

0.5

0.75

0.25

1

2.5

3

3.5

4

4.5

5

5.5

-0.4

-0.2

0

0.2

0.4

0.6

0.8