LTC6909(RevA) View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC6909
(Rev.:RevA)

1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation

Linear Technology 

LTC6909

Typical Applications

Simply Parallel Multiple DC/DC µModule® Regulator Systems to Achieve Higher Output Current. Board Layout Is as

Easy as Copying and Pasting Each µModule Regulator’s Layout With Very Few External Components Required

0.1µF

71.5k

LTC6909

V+A SET

GND PH2

PH0

PH1

OUT1

OUT2

OUT3

OUT4

MOD

V+D

OUT8

OUT7

OUT6

OUT5

VIN

10V TO 14V

+ CIN*

100µF

25V

10µF

25V

×2

SSFM DISABLED

0.1µF

SSFM

ENABLED

0.01µF

4.5V TO 20V

10µF

25V

×2

4.5V TO 20V

10µF

25V

×2

51.1k 51.1k

392k

5%

MARGIN

392k

CLOCK SYNC

0° PHASE

TRACK/SS CONTROL

VOUT

=

0.6V

60.4k

N

+

RSET

RSET

N = NUMBER OF PHASES

VIN

PGOOD

PLLIN TRACK/SS

VOUT

MPGM

RUN

COMP

INTVCC

DRVCC

LTM4601

SGND PGND

VFB

MARG0

MARG1

VOUT_LCL

DIFFVOUT

VOSNS+

VOSNS–

fSET

220pF

RSET

10k

22µF

6.3V

+

470µF

6.3V

VOUT

1.5V

48A MAX

120pF

MARGIN CONTROL

CLOCK SYNC

90° PHASE

TRACK/SS CONTROL

VIN

PGOOD

PLLIN TRACK/SS

VOUT

MPGM

RUN

VFB

MARG0

COMP

INTVCC

DRVCC

LTM4601-1

MARG1

VOUT_LCL

NC3

NC2

NC1

SGND PGND fSET

22µF

6.3V+

470µF

6.3V

392k

CLOCK SYNC

180° PHASE

TRACK/SS CONTROL

VIN

PGOOD

PLLIN TRACK/SS

VOUT

MPGM

RUN

VFB

MARG0

COMP

INTVCC

DRVCC

LTM4601-1

MARG1

VOUT_LCL

NC3

NC2

NC1

SGND PGND fSET

22µF

6.3V+

470µF

6.3V

4.5V TO 20V

PGOOD

10µF

25V

×2

392k

CLOCK SYNC

270° PHASE

TRACK/SS CONTROL

VIN

PGOOD

PLLIN TRACK/SS

VOUT

MPGM

RUN

VFB

MARG0

COMP

INTVCC

DRVCC

LTM4601-1

MARG1

VOUT_LCL

NC3

NC2

NC1

SGND PGND fSET

*CIN OPTIONAL TO REDUCE ANY LC RINGING.

NOT NEEDED FOR LOW INDUCTANCE PLANE CONNECTION

22µF

6.3V+

470µF

6.3V

0.1µF

6909 TA02

6909fa

17

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