LTM4661

17

4661f

For more information www.linear.com/LTM4661

APPLICATIONS INFORMATION

Figure 17. 3.3V Input to 5V Output, at 2A Design

Figure 18. 3.3V to 5V Input, 12V Output Design with External Clock

Figure 19. Two LTM4661 Module Parallel Design for 8V/2A Output Running at 1.2MHz

22µF ×2

16V

22µF ×2

6.3V

R1

31.6k

4661 F17

2.2µF

FB

5V/2A

SDB

MODE/SYNC

FREQ COMP

GND

3.3V

22µF ×2

25V

22µF ×2

6.3V

R2

11k

140k

4661 F18

3MHz CLOCK

SWITCHING FREQUENCY = CLOCK FREQUENCY/2

2.2µF

LTM4661

FB

12V/0.8A

SDB

MODE/SYNC

FREQ COMP

GND

3.3V TO 5V

22µF ×2

25V

22µF ×2

6.3V

8.87k

4661 F19

22µF ×2

25V

22µF ×2

6.3V

LTC6802 SET TO

2-PHASE 2.4MHz CLOCK OUTPUT

SWITCHING FREQUENCY = CLOCK FREQUENCY/2

1µF

83.5k

2.2µF

2.2µF

LTM4661

FB

SDB

MODE/SYNC

FREQ COMP

GND

LTM4661

FB

8V/2A

SDB

MODE/SYNC

LTC6902

V+

DIV

PH

OUT1

OUT2

10

9

8

7

6

SET

MOD

GND

OUT4

OUT3

1

2

3

4

5

FREQ COMP

COMP

COMP

GND

3.3V TO 5V