LT8338

18

Rev. 0

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Conducted EMI Performance (CISPR25 Class 5 Peak)

4V to 16V Input, 24V Output Micropower Synchronous Boost Converter with SSFM

TYPICAL APPLICATION

Conducted EMI Performance (CISPR25 Class 5 Average)

Radiated EMI Performance (CISPR25 Class 5 Peak)

Radiated EMI Performance (CISPR25 Class 5 Average)

EN/UVLO

SW

SYNC/MODE

CTRL

BST

GND

RT

LT8338

R1

953k

R2

1MEG

C11

0.01µF

R6

40.2k

R5

100k

C8

0.1µF

C6

0.1µF

R3

1MEG

R4

432k

C12

33µF

L1

4.7µH

C7

4.7µF

C1

0.1µF

C13

0.1µF

C14

0.1µF

FB2

0.47µH

C15

0.1µF

C3

10µF

C5

10µF

C9

2.2µF

(4V TO

16V)

(24V)

340mA

AT 12V

2.20MHz

8338 TA06a

INPUT EMI FILTER

OUTPUT EMI FILTER

L1: WURTH ELEKTRONIK 74438336047

C1/C13/C14/C15: MURATA GRM155R62A104KE14D

C3/C5: TAIYO YUDEN UMK325C7106KM-P

FB1: WURTH ELEKTRONIK 74479876147

FB2: WURTH ELEKTRONIK 742792040

C6: TDK CGA3E2X7R1H104K

C7: AVX 12065C475KAT2A

C12: SUN ELECTRONIC INDUSTRIES CORP 50CE33BS

+

FB1

0.47µH

CLASS 5 PEAK LIMIT

FREQUENCY (MHz)

0.1

1

10

30

–20

–10

0

10

20

30

40

50

60

70

80

8338 TA06b

CLASS 5 AVERAGE LIMIT

FREQUENCY (MHz)

0.1

1

10

30

–20

–10

0

10

20

30

40

50

60

70

80

8338 TA06c

CLASS 5 PEAK LIMIT

FREQUENCY (MHz)

0.1

1

10

100

1k

–20

–12

–4

4

12

20

28

36

44

52

60

8338 TA06d

CLASS 5 AVERAGE LIMIT

FREQUENCY (MHz)

0.1

1

10

100

1k

–20

–12

–4

4

12

20

28

36

44

52

60

(CISPR25 Class 5 Average)

8338 TA06e