LTC4444 datasheet(12/12 Pages) LINER

Part #	LTC4444

Description	High Voltage Synchronous N-Channel MOSFET Driver

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC4444

12

4444f

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

LT 1107 • PRINTED IN USA

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Supply

No RSENSE is a trademark of Linear Technology Corporation.

TYPICAL APPLICATION

LTC3780 High Efﬁciency 8V-80V VIN to 12V/5A Buck-Boost DC/DC Converter

PGOOD

SS

SENSE+

SENSE–

ITH

VOSENSE

SGND

RUN

FCB

PLLFLTR

PLLIN

STBYMD

BOOST1

TG1

SW1

VIN

EXTVCC

INTVCC

BG1

PGND

BG2

SW2

TG2

BOOST2

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

LTC3780EG

10k

100

Ω

20k

100

Ω

VOS+

150k

113k

1%

8.06k

1%

0.01

μF

47pF

VIN

D4

0.1

μF

100pF

68pF

0.1

μF

0.1

μF

2.2

μF, 100V, TDK C4532X7R2A225MT

100

μF, 100V SANYO 100ME 100AX

C1: SANYO 16ME330WF

D1: DIODES INC. BAV19WS

D2: DIODES INC. 1N5819HW-7-F

D3: DIODES INC. B320A-13-F

D4: DIODES INC. MMBZ5230B-7-F

D5: DIODES INC. B1100-13-F

L1: SUMIDA CDEP147-8R0

0.1

μF

16V

6V

10

μF

10V

TG1

SW1

1

μF

16V

0.22

μF

16V

0.22

μF

16V

L1 8

μH

2.2

μF

100V

×5

100

μF

100V

×2

VIN

1

μF

16V

0.1

μF

16V

VBIAS

12V

VBIAS

12V

D1

SENSE+

SENSE–

6V

D2

6V

1

2

4

TG1

6

7

8

9

3

VCC

GND

TG

BOOST

TINP

BINP

LTC4444

TS

BG

+

22

μF

16V

×3

C1

330

μF

×2

VOUT

10

Ω

VOS

+

4444 TA03

D5

SENSE+

SENSE–

D3

SW1

0.005

Ω

1W

10

Ω

10

Ω

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