LTM8031

1

8031fa

TYPICAL APPLICATION

DESCRIPTION

Ultralow Noise EMC 36V, 1A

DC/DC µModule Regulator

The LTM

36V, 1A DC/DC μModule

meet the radiated emissions requirements of EN55022.

Conducted emission requirements can be met by adding

standard filter components. Included in the package are the

switching controller, power switches, inductor, filters and

all support components. Operating over an input voltage

range of 3.6V to 36V, the LTM8031 supports an output

voltage range of 0.8V to 10V, and a switching frequency

range of 200kHz to 2.4MHz, each set by a single resistor.

Only the bulk input and output filter capacitors are needed

to finish the design. The low profile package (2.82mm)

enables utilization of unused space on the bottom of PC

boards for high density point of load regulation.

The LTM8031 is packaged in a thermally enhanced, compact

(9mm

×15mm)andlowprofile(2.82mm)overmoldedland

grid array (LGA) package suitable for automated assembly

by standard surface mount equipment. The LTM8031 is

RoHS compliant.

Ultralow Noise 5V/1A DC/DC μModule Regulator

FEATURES

APPLICATIONS

× 15mm × 2.82mm)

Surface Mount LGA Package

LTM8031 EMI Performance

L, LT, LTC, LTM, μModule, Linear Technology and the Linear logo are registered trademarks of

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

RT

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47.5k

44.2k

*RUNNING VOLTAGE RANGE.

SEE APPLICATIONS FOR START-UP DETAILS

FIN

1μF

10μF

5V

1A

RUN/SS

7VDC TO 36VDC

PGOOD

BIAS

LTM8031

AUX

OUT

SYNC GND

8031 TA01a

ADJ

FREQUENCY (MHz)

0

50

70

800

8031 TA01b

30

EN55022

CLASS B

LIMIT

10

40

60

80

20

0

–10

200

100

400

300

600 700

900

500

1000