MP4571

– 60V, 1A, SYNCHRONOUS STEP-DOWN CONVERTER

MP4571 Rev. 1.1

www.MonolithicPower.com

13

2/22/2023

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© 2023 MPS. All Rights Reserved.

TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN = 24V, VOUT = 5V, L = 15µH, fSW = 400kHz, AAM, TA = 25°C, unless otherwise noted.

Load Regulation

Line Regulation

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

0.15

0.20

10

100

1000

LOAD CURRENT (mA)

Vin=8V

Vin=12V

Vin=24V

Vin=36V

Vin=48V

Vin=60V

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

0.15

0.20

5

10 15 20 25 30 35 40 45 50 55 60

VIN (V)

Io=0.5A

Io=1A

Dropout vs. Input Voltage

Case Temp Rise vs. Load Current

4.0

4.2

4.4

4.6

4.8

5.0

5.2

5.0

5.2

5.4

5.6

5.8

6.0

6.2

6.4

VIN (V)

Io=0.1A

Io=0.5A

Io=1A

0

10

20

30

40

50

0.0

0.2

0.4

0.6

0.8

1.0

IOUT (A)

Vin=12V

Vin=24V

Vin=60V

Switching Frequency vs. RFREQ

Switching Frequency vs. VIN

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

10

20

30

40

50

60

70

80

90 100

RFREQ (kΩ)

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

5

10 15 20 25 30 35 40 45 50 55 60

VIN (V)

Rfreq=76.8k

Rfreq=12.1k