MP28253 – 3A, 21V, SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS

MP28253 Rev. 1.02

www.MonolithicPower.com

5

12/25/2013

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© 2013 MPS. All Rights Reserved.

TYPICAL PERFORMANCE CHARACTERISTICS

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0

0.5

1

1.5

2

2.5

3

INPUT VOLTAGE (V)

Enabled Supply Current vs.

Input Voltage

Operating Range

Vcc Regulator Line Regulation

INPUT VOLTAGE (V)

INPUT VOLTAGE (V)

500

550

600

650

700

750

800

850

900

950

1000

DUTY CYCLE (%)

Line Regulation

OUTPUT CURRENT (A)

INPUT VOLTAGE (V)

Case Temperature Rise vs.

Output Current

INPUT CURRENT (V)

OUTPUT CURRENT (A)

0

5

10

15

20

25

-0.2

-0.15

-0.1

-0.05

0

0.05

0.1

0.15

0.2

0

5

10

15

20

25

Disabled Supply Current vs.

Input Voltage

0

5

10

15

20

25

0.1

1

10

100

0

5

10

15

20

25

0

5

10

15

20

25

0

5

10

15

01234

3.5

4

4.5

5

5.5

6

0

2

4

6

8

0

20

40

60

80

100

Current Limit vs.

Duty Cycle

Minimum on time Limit

DmaxLimit

Load Regulation