LTM4656 datasheet(22/28 Pages) AD

22 / 28 page

LTM4656/LTM4656-1

Rev. 0

For more information www.analog.com

Figure 19. 5V Input to 12VOUT at 3.25A Design

TYPICAL APPLICATIONS

Figure 20. 5V Input to 24VOUT at 1.35A Design

INTVCC

24.3k

4.7µF

0.1µF

41.2k

4.75V

TURN ON

60.4k

10µF

100µF

×2

22µF

100µF

VIN

INTVCC

PGOOD

VOUT

FREQ

MODE_PLLIN

PGND

VFB

SHDN

FLT

BVIN

VBIAS

TEMP+

TEMP–

LTM4656

TO TEMP MONITOR

12V AT 3.25A

10µF

FAULT

25V

16V

5V PROTECTED

4656 F19

PINS UNUSED IN THIS APPLICATION:

TMR, RUN, COMP, SENSE1, SW

INTVCC

11.5k

4.7µF

0.1µF

41.2k

60.4k

100µF

×2

150µF

22µF

VIN

INTVCC

PGOOD

VOUT

FREQ

MODE_PLLIN

PGND

VFB

SHDN

FLT

BVIN

VBIAS

TEMP+

TEMP–

LTM4656

TO TEMP MONITOR

24V AT 1.35A

10µF

5V PROTECTED

FAULT

35V

16V

5V PROTECTED

100µF

×2

4656 F20a

PINS UNUSED IN THIS APPLICATION:

TMR, RUN, COMP, SENSE1, SW

4.75V

TURN ON

200ms/DIV

VIN

5V/DIV

VOUT

10V/DIV

IIN

5A/DIV*

4656 F20b

*25mV SENSE IN FOLDBACK

TIMER (218 s)

TIMER PIN

1V/DIV

5ms/DIV

VIN

5V/DIV

VOUT

10V/DIV

TCOOL

(~35ms)

4656 F20c

TIMER PIN 1V/DIV

Short Circuit Trip

Retry Cycle

LTM4656 Datasheet(PDF) 22 Page - Analog Devices

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