Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsPMICsPMIC - voltage regulators - DC DC switch controllers SSOP 28

LTC3789

26

3789fa

Figure 13. LTC3789 12V/5A, Buck-Boost Regulator

LTC3789

D

A

DFLS160

D

B

DFLS160

Q

A

SiR422DP

Q

B

SiR422DP

D1

B240A

C

F

1µF

C

OUT

2.2µF

330µF

V

OUT

12V, 5A

V

OUT

V

IN

V

OUT

V

IN

5V TO 38V

MAX

C

C1

3300pF

C

C2

1000pF

C

SS

6.8nF

C

IN

47µF

3789 F13

C

A

0.22µF

V

PULLUP

C

B

0.22µF

Q

C

SiR422DP

L

6.8µH

Q

D

SiR422DP

C

VCC

4.7µF

10mΩ

V

FB

SS

SENSE

+

SENSE

–

I

TH

SGND

MODE/PLLIN

FREQ

RUN

V

INSNS

V

OUTSNS

I

LIM

V

OUT

PGOOD SW1

TG1

BOOST1

PGND

BG1

V

IN

INTV

CC

EXTV

CC

INTV

CC

1

2

3

4

5

6

27

26

25

24

23

22

BG2

BOOST2

I

OSENSE

+

I

OSENSE

–

TG2

SW2

TRIM

7

8

9

10

11

12

13

14

21

20

19

18

17

16

15

1k

ON/OFF

R

C

68k

121k

R1

20k

R2

280k

D2

B240A

10mΩ

10Ω

1k

100Ω

100Ω

2.2µF

+

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

SGND

PGND

R

SENSE

C

RR

3789 F14

Figure 14. Sense Lines Layout

applicaTions inForMaTion