LTM4618

1

4618f

TYPICAL APPLICATION

DESCRIPTION

6A DC/DC µModule

Regulator with Tracking and

Frequency Synchronization

DC/DC power supply in a 9mm

× 15mm × 4.32mm LGA

package. Included in the package are the switching con-

troller, power FETs, inductor and all support components.

Operating over an input voltage range of 4.5V to 26.5V,

the LTM4618 supports an output voltage range of 0.8V

to 5V set by a single external resistor. Its high efficiency

design delivers 6A continuous current (8A peak). Only a

few input and output capacitors are needed.

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 and output voltage tracking for

supply rail sequencing. Burst Mode operation or pulse-

skipping mode can be selected for light load operations.

Fault protection features include overvoltage protection,

overcurrent protection and foldback current limit for

short-circuit protection.

The LTM4618 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. All other trademarks are the property of their

respective owners.

2.5V/6A DC/DC Power μModule

FEATURES

APPLICATIONS

× 15mm × 4.32mm LGA Package

Efficiency and Power Loss vs Load Current

LOAD CURRENT (A)

0

95

90

80

85

75

70

3.0

2.5

1.5

2.0

1.0

0

0.5

4

2

4618 TA01b

6

3

15

POWER LOSS

EFFICIENCY

4618 TA01

COMP

TK/SS

RUN

FREQ

PGOOD

MODE/PLLIN

LTM4618

SGND

PGND

28.7k

2.5V/6A

0.1μF

6V to 26.5V