LTM8032 Datasheet, PDF (1/20 Pages) Linear Technology – Ultralow Noise EMC Compliant 36V, 2A DC/DC μModule

FEATURES
n _{Complete Step-Down Switch Mode Power Supply}
n _{Wide Input Voltage Range: 3.6V to 36V}
n _{2A Output Current}
n _{0.8V to 10V Output Voltage}
n _{Selectable Switching Frequency: 200kHz to 2.4MHz}
n _{EN55022 Class B Compliant}
n _{Current Mode Control}
n _{(e4) RoHS Compliant Package with Gold Pad Finish}
n _{Programmable Soft-Start}
n _{Low Profile (9mm × 15mm × 2.82mm)}
Surface Mount LGA Package
APPLICATIONS
n _{Automotive Battery Regulation}
n _{Power for Portable Products}
n _{Distributed Supply Regulation}
n _{Industrial Supplies}
n _{Wall Transformer Regulation}
LTM8032
Ultralow Noise
EMC Compliant 36V, 2A
DC/DC µModule
DESCRIPTION
The LTM^®8032 is an electromagnetic compatible (EMC)
36V, 2A 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 LTM8032 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 LTM8032 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 LTM8032 is
RoHS compliant.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
μModule is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Ultralow Noise 5V/2A DC/DC μModule Regulator
V_IN*
7VDC TO 36VDC
V_IN
OUT
FIN
RUN/SS
AUX
2.2μF
LTM8032 BIAS
10μF
V_OUT
5V
2A
SHARE
PGOOD
RT _{SYNC GND} ADJ
44.2k
47.5k
8032 TA01a
f_SW = 700kHz
*RUNNING VOLTAGE RANGE.
SEE APPLICATIONS FOR START-UP DETAILS
LTM8032 EMI Performance
90
80
70
60
50
40
EN55022
CLASS B
30
LIMIT
20
10
0
–10
0
100 200 300 400 500 600 700 800 900 1000
FREQUENCY (MHz)
8031 TA01b
8032f
1