LT8601

22

8601fa

For more information www.linear.com/LT8601

Typical applicaTions

Details of Front Page Application

Start-Up Sequence

8601 TA02a

OUT1

5V, 1.5A

C1

22µF

C12

4.7µF

R1

453k

L1

3.3µH

R2

113k

GND

SW1

EN/UVLO

6V TO 24V

TRANSIENTS

TO 42V

BST1

LT8601

RST

FB1

C7

0.1µF

C11

10µF

OUT2

3.3V, 1A

THE MAX CURRENT ON OUT2 IS

C2

47µF

R3

316k

L2

1.0µH

R4

137k

SW2

BST2

FB2

C8

0.1µF

RT

THE VALUES SHOWN ARE FOR 2MHz OPERATION. FOR 1MHz OPERATION, MAKE THE FOLLOWING CHANGES:

L1 = 6.2H, CFF1 = 4.7pF, L2 = 2.7H, L3 = 2.2H, R9 = 60.4k.

AT 1MHz OPERATION, THE INPUT VOLTAGE RANGE IS 6V TO 42V.

C9

4.7µF

10pF

22pF

OUT3

1.8V, 1.8A

C3

22µF

R5

249k

R6

200k

L3

1.0µH

SW3

FB3

BIAS

C5

4.7µF

TRKSS1

C13

2200pF

TRKSS2

RUN3

PG1

OUT2

PG2

PG3

SYNC

POREN

CPOR

10pF

R10

20k

R9

28.7k

Start–Up Sequence

200µs/DIV

5V/DIV

5V/DIV

2V/DIV

8601 TA02b