LTC3609(RevB) View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC3609
(Rev.:RevB)

32V, 6A Monolithic Synchronous Step-Down DC/DC Converter

Linear Technology 

LTC3609

Functional Diagram

RON

VON

ION

13

22

0.7V

2.4V

FCB

19

4.7V

1µA

+

VRNG

17

tON

=

VVON

IION

(10pF)

20k

ICMP

1.4V

s

(0.5 TO 2)

0.7V

0.6V

–+

F

R

SQ

+

IREV

–

EXTVCC

29

–

FCNT

ON

SWITCH

LOGIC

SHDN

OV

SVIN

30

PVIN

0.6V

1, 2, 3, 4, 5,

REF

6, 7, 48, 49,

50, 51, 52, 53

5V

CIN

REG

INTVCC

31, 32

BOOST

11

M1

CB

SW

DB

L1

8, 33, 41, 42,

43, 44, 45,

46, 47, 55

+

COUT

M2

CVCC

PGND

34, 35, 36, 37,

38, 39, 40

16 PGOOD

VOUT

1

240k

ITHB

Q2 Q4

Q6

Q3 Q1

+– 0.8V

s3.3

EA

1V

SS

–+

RUN

SHDN

R2

0.54V

UV

OV

0.66V

1.2µA

6V

23

VFB

R1

SGND

10, 14, 15, 20,

26, 27, 54

NC

9, 21, 24, 25, 28

0.6V

18

ITH

0.4V

12

RUN/SS

CSS

3609 FD

3609fb



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