LTM4627

1

4627f

TYPICAL APPLICATION

DESCRIPTION

15A DC/DC µModule

Regulator

switch mode DC/DC power supply. Included in the pack-

age are the switching controller, power FETs, inductor and

compensationcomponents.Operatingoveraninputvoltage

range from 4.5V to 20V, the LTM4627 supports an output

voltage range of 0.6V to 5V, set by a single external resistor.

Only a few input and output capacitors are needed.

Current mode operation allows precision current sharing

of up to four LTM4627 regulators to obtain 60A output.

High switching frequency and a current mode architecture

enable a very fast transient response to line and load

changes without sacrificing stability. The device supports

frequency synchronization, multiphase/current sharing

operation, Burst Mode operation and output voltage track-

ing for supply rail sequencing.

The LTM4627 is offered in a thermally enhanced 15mm

×

15mm

× 4.32mm LGA package. The LTM4627 is PB-free

and RoHS compliant.

L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode and μModule are registered

trademarks of Linear Technology Corporation. PolyPhase is a registered trademark of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589,

6774611, 6677210.

1.2V, 15A DC/DC μModule

FEATURES

APPLICATIONS

Regulation

15mm

× 15mm × 4.32mm LGA Package

Efficiency vs Load Current

COMP

TRACK/SS

RUN

MODE_PLLIN

PGOOD

DIFF_OUT

+

–

VFB

LTM4627

10k

60.4k

100k

22μF

16V

×3

82pF

0.1μF

470μF

6.3V

100μF*

6.3V

1.2V

15A

* SEE TABLE 4

** SEE TABLE 1

4627 TA01a

4.5V TO 16V

SGND

GND

150pF

+

LOAD CURRENT (A)

0

50

55

65

70

75

85

4

8

10

4627 TA01b

60

90

95

80

26

12

14

16