MPQ9840 – 36V, 3.5A, LOW IQ, SYNC STEP-DOWN CONVERTER, AEC-Q100

MPQ9840 Rev. 1.02

www.MonolithicPower.com

9

7/1/2020

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2020 MPS. All Rights Reserved.

TYPICAL PERFORMANCE CHARACTERISTICS

VIN = 12V, VOUT = 5V, Io= 3.5A, L = 4.7μH, FSW = 450kHz, with EMI filters, TA = +25°C, unless

otherwise noted. (7)

CISPR25 Class 5 Peak Conducted

Emissions

150kHz -108MHz

CISPR25 Class 5 Average Conducted

Emissions

150kHz - 108MHz

-20

-15

-10

-5

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

0.1

108

Frequency (MHz)

1

10

CISPR25 CLASS 5 LIMITS

NOISE FLOOR

-20

-15

-10

-5

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

0.1

108

Frequency (MHz)

110

CISPR25 CLASS 5 LIMITS

NOISE FLOOR

CISPR25 Class 5 Peak Radiated

Emissions

150kHz-30MHz

CISPR25 Class 5 Average Radiated

Emissions

150kHz-30MHz

-10

-5

0

5

10

15

20

25

30

35

40

45

50

55

60

0.1

30

Frequency (MHz)

1

CISPR25 CLASS 5 LIMITS

NOISE FLOOR

-10

-5

0

5

10

15

20

25

30

35

40

45

50

55

60

0.1

30

Frequency (MHz)

1

CISPR25 CLASS 5 LIMITS

NOISE FLOOR

CISPR25 Class 5 Peak Radiated

Emissions

Horizontal, 30MHz-200MHz

CISPR25 Class 5 Average Radiated

Emissions

Horizontal, 30MHz-200MHz

-5

0

5

10

15

20

25

30

35

40

45

50

55

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

190

200

Frequency (MHz)

CISPR25 CLASS 5 LIMITS

NOISE FLOOR

HORIZONTAL  POLARIZATION

-5

0

5

10

15

20

25

30

35

40

45

50

55

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

180

190

200

Frequency (MHz)

CISPR25 CLASS 5 LIMITS

NOISE FLOOR

HORIZONTAL  POLARIZATION