LTM8033_15 Datasheet, PDF (1/26 Pages) Linear Technology – Ultralow Noise EMC 36VIN, 3A DC/DC Module Regulator

FEATURES
n _{Complete Step-Down Switch Mode Power Supply}
n _{Wide Input Voltage Range: 3.6V to 36V}
n _{3A Output Current}
n _{0.8V to 24V Output Voltage}
n _{EN55022 Class B Compliant}
n _{Current Share Multiple LTM8033 Regulators for}
More Than 3A Output
n _{Selectable Switching Frequency: 200kHz to 2.4MHz}
n _{Current Mode Control}
n _{SnPb or RoHS Compliant Finish}
n _{Programmable Soft-Start}
n _{Compact Package (11.25mm × 15mm × 4.32mm)}
Surface Mount LGA and (11.25mm × 15mm ×
4.92mm) BGA Packages
APPLICATIONS
n _{Automotive Battery Regulation}
n _{Power for Portable Products}
n _{Distributed Supply Regulation}
n _{Industrial Supplies}
n _{Wall Transformer Regulation}
LTM8033
Ultralow Noise EMC 36V_IN,
3A DC/DC µModule
Regulator
DESCRIPTION
The LTM^®8033 is an electromagnetic compatible (EMC)
36V, 3A 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 LTM8033 supports an output
voltage range of 0.8V to 24V, 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 LTM8033 is packaged in a compact (11.25mm × 15mm
× 4.32mm) overmolded land grid array (LGA) and ball grid
array (BGA) package suitable for automated assembly by
standard surface mount equipment. The LTM8033 is avail-
able with SnPb (BGA) or RoHS compliant terminal finish.
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and Burst Mode are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
TYPICAL APPLICATION
Ultralow Noise 12V/3A DC/DC µModule Regulator
V_IN*
20V TO 36V
2.2µF
1µF
LTM8033
V_IN
V_OUT
RUN/SS
AUX
FIN
BIAS
SHARE
PGOOD
RT SYNC GND ADJ
41.2k
34.8k
V_OUT
12V
3A
47µF
f = 850kHz
8033 TA01a
* RUNNING VOLTAGE RANGE. PLEASE REFER TO THE
APPLICATIONS INFORMATION SECTION FOR START-UP DETAILS.
EMI Performance
80
70
60
50
40
30
20
10
0
30
226.2 422.4 618.6 814.8 1010
128.1 324.3 520.5 716.7 912.9
FREQUENCY (MHz)
8033 TA01b
For more information www.linear.com/LTM8033
8033fb
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