Linear Technology LTM8031EV Demo Board, Ultralow EMI 36V, 1A µModule Regulator DC1597A DC1597A Fiche De Données
Codes de produits
DC1597A
LTM8031
1
8031fb
Typical applicaTion
DescripTion
Ultralow Noise EMC 36V, 1A
DC/DC µModule Regulator
The LTM
®
8031 is an electromagnetic compatible (EMC)
36V, 1A DC/DC µModule
®
buck converter designed to
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
The LTM8031 is packaged in a thermally enhanced, compact
(9mm
×15mm) and low profile (2.82mm) overmolded land
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
n
Complete Step-Down Switch Mode Power Supply
n
Wide Input Voltage Range: 3.6V to 36V
n
1A Output Current
n
0.8V to 10V Output Voltage
n
Switching Frequency from 200kHz to 2.4MHz
n
EN55022 Class B Compliant with Margin
n
Current Mode Control
n
(e4) RoHS Compliant Package with Gold Pad Finish
n
Programmable Soft-Start
n
Pin Compatible with the LTM8032
n
Low Profile (9mm
× 15mm × 2.82mm)
Surface Mount LGA Package
n
Automotive Battery Regulation
n
Power for Portable Products
n
Distributed Supply Regulation
n
Industrial Supplies
n
Wall Transformer Regulation
LTM8031 EMI Performance
L
, LT, LTC, LTM, µModule, Burst Mode, Linear Technology and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
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47.5k
44.2k
*RUNNING VOLTAGE RANGE.
SEE APPLICATIONS FOR START-UP DETAILS
V
IN
FIN
1µF
10µF
V
OUT
5V
1A
RUN/SS
V
IN
*
7VDC TO 36VDC
PGOOD
BIAS
LTM8031
AUX
OUT
SYNC GND
8031 TA01a
ADJ
FREQUENCY (MHz)
0
EMISSIONS LEVEL (dBµV/m)
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
V
IN
= 36V